Fixed worked-23cm-tag when working with dxlog/n1mm logger

.github/workflows/pr-compile-check.yml

@@ -11,18 +11,18 @@ env:
 
 jobs:
   compile:
-    name: Compile (Java 21)
+    name: Compile (Java 17)
     runs-on: ubuntu-latest
 
     steps:
       - name: Checkout
         uses: actions/checkout@v4.1.7
 
-      - name: Set up Java 21
+      - name: Set up Java 17
         uses: actions/setup-java@v4.1.0
         with:
           distribution: temurin
-          java-version: "21"
+          java-version: "17"
 
       - name: Ensure mvnw is executable
         run: chmod +x mvnw

SimpleLogFile.txt

@@ -0,0 +1,2 @@
+S53MM
+PA9R

github_docs/de-Installation.md

@@ -116,47 +116,12 @@ Die Datei `de.x08.KST4Contest.flatpakref` aus dem [aktuellen Release](https://gi
 flatpak install de.x08.KST4Contest.flatpakref
 ```
 
-Oder den Remote manuell hinzufügen (empfohlen für Nightly/Beta-Zugriff):
+Oder den Remote manuell hinzufügen:
 ```bash
-flatpak remote-add --if-not-exists kst4contest https://praktimarc.github.io/kst4contest/kst4contest.flatpakrepo
+flatpak remote-add kst4contest https://praktimarc.github.io/kst4contest/
 flatpak install kst4contest de.x08.KST4Contest
 ```
 
-#### Flatpak-Kanäle (nightly / beta / stable)
-
-Das Flatpak-Repository enthält drei Kanäle, die alle im selben Remote liegen:
-
-| Kanal | Inhalt | Wird gebaut bei |
-|---|---|---|
-| `stable` | Aktuelle stabile Version | Jedem normalen Release-Tag |
-| `beta` | Vorab-Version | Tags mit `beta-` Präfix |
-| `nightly` | Entwicklungsstand (main-Branch) | Täglich / jedem Push auf main |
-
-Remote einmalig hinzufügen, dann den gewünschten Kanal installieren:
-
-```bash
-flatpak remote-add --if-not-exists kst4contest https://praktimarc.github.io/kst4contest/kst4contest.flatpakrepo
-
-# Stable (Standard)
-flatpak install kst4contest de.x08.KST4Contest
-
-# Beta
-flatpak install kst4contest de.x08.KST4Contest//beta
-
-# Nightly
-flatpak install kst4contest de.x08.KST4Contest//nightly
-```
-
-> **Hinweis:** Flatpak erlaubt nur eine installierte Version pro App-ID gleichzeitig. Um den Kanal zu wechseln, zuerst die aktuelle Version deinstallieren:
-> ```bash
-> flatpak uninstall de.x08.KST4Contest
-> flatpak install kst4contest de.x08.KST4Contest//nightly
-> ```
-
-Updates erfolgen wie gewohnt mit `flatpak update`.
-
-Die `flatpakref`-Dateien für Beta und Stable liegen jeweils im entsprechenden [GitHub-Release](https://github.com/praktimarc/kst4contest/releases). Das Nightly-`flatpakref` (`de.x08.KST4Contest.nightly.flatpakref`) ist als Artifact im [GitHub Actions](https://github.com/praktimarc/kst4contest/actions)-Tab verfügbar (wird 14 Tage aufbewahrt) – der Remote-Weg oben ist für Nightly daher meist einfacher.
-
 ### macOS
 1. DMG-Datei für die eigene Architektur herunterladen (Apple Silicon oder Intel).
 2. DMG-Datei öffnen.

github_docs/en-Installation.md

@@ -116,47 +116,12 @@ Download `de.x08.KST4Contest.flatpakref` from the [latest release](https://githu
 flatpak install de.x08.KST4Contest.flatpakref
 ```
 
-Or add the remote manually (recommended for nightly/beta access):
+Or add the remote manually:
 ```bash
-flatpak remote-add --if-not-exists kst4contest https://praktimarc.github.io/kst4contest/kst4contest.flatpakrepo
+flatpak remote-add kst4contest https://praktimarc.github.io/kst4contest/
 flatpak install kst4contest de.x08.KST4Contest
 ```
 
-#### Flatpak Channels (nightly / beta / stable)
-
-The Flatpak repository provides three channels, all served from the same remote:
-
-| Channel | Content | Built on |
-|---|---|---|
-| `stable` | Current stable version | Every normal release tag |
-| `beta` | Pre-release version | Tags prefixed with `beta-` |
-| `nightly` | Development build (main branch) | Every push to main / daily |
-
-Add the remote once, then install the channel you want:
-
-```bash
-flatpak remote-add --if-not-exists kst4contest https://praktimarc.github.io/kst4contest/kst4contest.flatpakrepo
-
-# Stable (default)
-flatpak install kst4contest de.x08.KST4Contest
-
-# Beta
-flatpak install kst4contest de.x08.KST4Contest//beta
-
-# Nightly
-flatpak install kst4contest de.x08.KST4Contest//nightly
-```
-
-> **Note:** Flatpak only allows one installed version per App-ID at a time. To switch channels, uninstall the current version first:
-> ```bash
-> flatpak uninstall de.x08.KST4Contest
-> flatpak install kst4contest de.x08.KST4Contest//nightly
-> ```
-
-Updates work as usual with `flatpak update`.
-
-The `flatpakref` files for beta and stable are attached to their respective [GitHub Releases](https://github.com/praktimarc/kst4contest/releases). The nightly `flatpakref` (`de.x08.KST4Contest.nightly.flatpakref`) is available as an artifact on the [GitHub Actions](https://github.com/praktimarc/kst4contest/actions) tab (kept for 14 days) — for nightly builds, the manual remote approach above is usually more convenient.
-
 ### macOS
 1. Download the DMG file for your architecture (Apple Silicon or Intel).
 2. Open the DMG file.

pom.xml

@@ -24,12 +24,12 @@
         <launcher>${project.artifactId}</launcher>
         <appName>${project.artifactId}</appName>
         <main.class>kst4contest.view.Kst4ContestApplication</main.class>
-        <java.version>21</java.version>
+        <java.version>17</java.version>
         <required.maven.version>3.6.3</required.maven.version>
         <jar.filename>${project.artifactId}-${project.version}</jar.filename>
 
         <!-- Dependency versions -->
-        <javafx.version>21.0.5</javafx.version>
+        <javafx.version>19.0.2.1</javafx.version>
         <jetbrains.annotations.version>24.0.1</jetbrains.annotations.version>
         <junit.version>5.10.1</junit.version>
         <lombok.version>1.18.44</lombok.version>
@@ -50,8 +50,8 @@
         <maven.wrapper.plugin>3.2.0</maven.wrapper.plugin>
         <moditect.maven.plugin>1.0.0.RC2</moditect.maven.plugin>
         <jpackage.maven.plugin>0.1.3</jpackage.maven.plugin>
-        <maven.pmd.version>3.28.0</maven.pmd.version>
-        <pmd.version>7.17.0</pmd.version>
+        <maven.pmd.version>3.21.2</maven.pmd.version>
+        <pmd.version>6.55.0</pmd.version>
         <codehaus.version.plugin>2.16.1</codehaus.version.plugin>
         <javafx.maven.plugin>0.0.8</javafx.maven.plugin>
         <spotbugs.maven.plugin>4.9.8.2</spotbugs.maven.plugin>
@@ -93,13 +93,6 @@
             <version>${javafx.version}</version>
         </dependency>
 
-        <!-- JLayer: pure-Java MP3 decoder, used instead of JavaFX Media for Flatpak audio compatibility -->
-        <dependency>
-            <groupId>javazoom</groupId>
-            <artifactId>jlayer</artifactId>
-            <version>1.0.1</version>
-        </dependency>
-
         <!-- SQLite -->
         <dependency>
             <groupId>org.xerial</groupId>
@@ -287,7 +280,30 @@
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-pmd-plugin</artifactId>
                 <version>${maven.pmd.version}</version>
+                <dependencies>
+                    <dependency>
+                        <groupId>net.sourceforge.pmd</groupId>
+                        <artifactId>pmd-core</artifactId>
+                        <version>${pmd.version}</version>
+                    </dependency>
+                    <dependency>
+                        <groupId>net.sourceforge.pmd</groupId>
+                        <artifactId>pmd-java</artifactId>
+                        <version>${pmd.version}</version>
+                    </dependency>
+                    <dependency>
+                        <groupId>net.sourceforge.pmd</groupId>
+                        <artifactId>pmd-javascript</artifactId>
+                        <version>${pmd.version}</version>
+                    </dependency>
+                    <dependency>
+                        <groupId>net.sourceforge.pmd</groupId>
+                        <artifactId>pmd-jsp</artifactId>
+                        <version>${pmd.version}</version>
+                    </dependency>
+                </dependencies>
                 <configuration>
+                    <sourceEncoding>${project.build.sourceEncoding}</sourceEncoding>
                     <minimumTokens>100</minimumTokens>
                     <targetJdk>${java.version}</targetJdk>
                     <linkXRef>false</linkXRef>
@@ -420,7 +436,6 @@
                                 <addmodule>javafx.graphics</addmodule>
                                 <addmodule>javafx.fxml</addmodule>
                                 <addmodule>javafx.web</addmodule>
-                                <addmodule>javafx.media</addmodule>
                                 <addmodule>java.sql</addmodule>
                                 <addmodule>java.net.http</addmodule>
                                 <addmodule>jdk.crypto.ec</addmodule>

src/main/java/kst4contest/controller/ChatController.java

@@ -1205,26 +1205,12 @@ public class ChatController implements ThreadStatusCallback, PstRotatorEventList
 	}
 
 
-	/**
-	 * Notifies the UI that station-list derived values have changed.
-	 *
-	 * <p>This method may be called from parser threads, UDP listener threads and
-	 * reachability worker threads. Therefore the listener is always invoked on the
-	 * JavaFX application thread.</p>
-	 *
-	 * @param reason short debug reason for the UI log
-	 */
-	public void fireUserListUpdate(String reason) {
-		if (statusListener == null) {
-			return;
-		}
-
-		if (Platform.isFxApplicationThread()) {
-			statusListener.onUserListUpdated(reason);
-		} else {
-			Platform.runLater(() -> statusListener.onUserListUpdated(reason));
-		}
-	}
+    public void fireUserListUpdate(String reason) {
+        if (statusListener != null) {
+            // Da UI Updates im JavaFX Thread passieren müssen, hier oder im Listener Platform.runLater nutzen
+            statusListener.onUserListUpdated(reason);
+        }
+    }
 
 //	/**
 //	 * checks if the callsign-String of a given chatmember instance and a given list
@@ -2179,39 +2165,32 @@ public class ChatController implements ThreadStatusCallback, PstRotatorEventList
 	}
 
 	/**
-	 * Returns true when the member's four-character grid square has already been
-	 * worked on any band.
-	 *
-	 * <p>This method intentionally ignores the currently enabled own bands. The grid
-	 * status in the user list is meant to be a simple and robust any-band indicator.</p>
+	 * Returns true when the member's gross field is not worked on at least one enabled
+	 * station band. This is the predicate behind the "new locator" filter.
 	 *
 	 * @param member member to inspect
-	 * @return true if the gross grid square was worked on any band
+	 * @return true if the station is still a new locator on any enabled band
 	 */
-	public boolean isGridSquareWorkedAny(ChatMember member) {
+	public boolean isNewLocatorOnAnyEnabledBand(ChatMember member) {
 		if (member == null || member.getQra() == null) {
 			return false;
 		}
 
-		return workedGrossFieldCache.isGrossFieldWorkedAny(member.getQra());
-	}
+		EnumSet<Band> enabledBands = reachabilityService == null
+				? getMyEnabledBandsFromPrefs(chatPreferences)
+				: reachabilityService.getEnabledStationBands();
 
-	/**
-	 * Returns true when the member's four-character grid square has not been worked
-	 * on any band yet.
-	 *
-	 * <p>This is the predicate behind the optional "Only new grids" filter. It no
-	 * longer depends on active station band settings.</p>
-	 *
-	 * @param member member to inspect
-	 * @return true if the gross grid square is still new
-	 */
-	public boolean isNewGridSquare(ChatMember member) {
-		if (member == null || member.getQra() == null) {
+		if (enabledBands.isEmpty()) {
 			return false;
 		}
 
-		return !workedGrossFieldCache.isGrossFieldWorkedAny(member.getQra());
+		for (Band band : enabledBands) {
+			if (!workedGrossFieldCache.isGrossFieldWorked(band, member.getQra())) {
+				return true;
+			}
+		}
+
+		return false;
 	}
 
 	public long getCurrentEpochTime() {
@@ -2492,8 +2471,6 @@ public class ChatController implements ThreadStatusCallback, PstRotatorEventList
 			return;
 		}
 
-		rebuildWorkedGrossFieldCacheFromDatabase();
-
 		HashMap<String, ChatMember> finalWorkedDataFromDatabase = workedDataFromDatabase;
 
 		Platform.runLater(() -> {

src/main/java/kst4contest/controller/DBController.java

@@ -682,7 +682,8 @@ public class DBController {
 		String workedBandColumnName = helper_resolveWorkedBandColumnName(chatMemberToStore);
 
 		if (workedBandColumnName == null) {
-			return helper_updateWorkedAnyOnChatMember(chatMemberToStore);
+			System.out.println("[DBCtrl, Error]: unknown at which band the qso had been!");
+			return false;
 		}
 
 //		String updateWorkedSql =
@@ -716,47 +717,6 @@ public class DBController {
 		}
 	}
 
-	/**
-	 * Updates only the global worked-any flag of a stored chatmember row.
-	 *
-	 * <p>This is used when an external logger confirms that a station was worked,
-	 * but the software cannot reliably map the QSO to one of the persisted band
-	 * columns. The UI status "x" is based on this global worked flag, so this method
-	 * makes no-band or unsupported-band log entries persistent as worked-any.</p>
-	 *
-	 * @param chatMemberToStore chatmember that contains the worked call and optional locator
-	 * @return true if an existing database row was updated
-	 * @throws SQLException if the database write fails
-	 */
-	private synchronized boolean helper_updateWorkedAnyOnChatMember(ChatMember chatMemberToStore) throws SQLException {
-
-		if (chatMemberToStore == null
-				|| chatMemberToStore.getCallSignRaw() == null
-				|| chatMemberToStore.getCallSignRaw().isBlank()) {
-			return false;
-		}
-
-		String updateWorkedAnySql =
-				"UPDATE ChatMember SET worked = 1, "
-						+ "qra = CASE WHEN ? IS NOT NULL AND TRIM(?) <> '' AND LOWER(TRIM(?)) <> 'unknown' THEN ? ELSE qra END, "
-						+ "lastFlagsChangeEpochMs = ? WHERE callsign = ?;";
-
-		try (PreparedStatement preparedStatement = connection.prepareStatement(updateWorkedAnySql)) {
-			String qra = chatMemberToStore.getQra();
-
-			preparedStatement.setString(1, qra);
-			preparedStatement.setString(2, qra);
-			preparedStatement.setString(3, qra);
-			preparedStatement.setString(4, qra);
-			preparedStatement.setLong(5, System.currentTimeMillis());
-			preparedStatement.setString(6, chatMemberToStore.getCallSignRaw());
-
-			int affectedRows = preparedStatement.executeUpdate();
-			return affectedRows > 0;
-		}
-	}
-
-
 	/**
 	 * Updates all not-QRV flags for a chatmember row. The method uses the normalized
 	 * raw callsign and updates the timestamp so that automatic contest cleanup can

src/main/java/kst4contest/controller/MessageBusManagementThread.java

@@ -327,8 +327,7 @@ public class MessageBusManagementThread extends Thread {
 				// 1. Store in the new Map (for future context/history)
 
 				sender.addKnownFrequency(finalDetectedBand, finalDetectedFrequency);
-				// No automatic full terrain analysis here.
-				// The frequency is stored for later map/manual reachability requests.
+				client.getReachabilityService().ensureTropoMarginCalculated(sender, finalDetectedBand);
 
 				//propagate known frequency to all instances of the same callsign (callRaw may exist multiple times)
 				try {
@@ -337,9 +336,7 @@ public class MessageBusManagementThread extends Thread {
 						ChatMember cm = client.getLst_chatMemberList().get(idx);
 						if (cm != null && cm != sender) {
 							cm.addKnownFrequency(finalDetectedBand, finalDetectedFrequency);
-							// No automatic full terrain analysis here.
-							// Avoids exhausting the online terrain API when many stations mention QRGs.
-						}
+							client.getReachabilityService().ensureTropoMarginCalculated(cm, finalDetectedBand);						}
 					}
 				} catch (Exception e) {
 					System.out.println("[SmartParser, warning]: failed to propagate known frequency across duplicates: " + e.getMessage());
@@ -591,8 +588,7 @@ public class MessageBusManagementThread extends Thread {
 
 				if (!client.getChatPreferences().getStn_loginCallSign().equals(newMember.getCallSign())) {
 					this.client.getLst_chatMemberList().add(newMember); //the own call will not be in the list
-//					this.client.getReachabilityService().ensureAutoTropoMarginCalculated(newMember);
-					// Reachability is calculated on demand only: map click, selected station, or manual request.
+					this.client.getReachabilityService().ensureAutoTropoMarginCalculated(newMember);
 				}
 
 
@@ -638,7 +634,7 @@ public class MessageBusManagementThread extends Thread {
 					newMember = this.client.getDbHandler().fetchChatMemberWkdDataForOnlyOneCallsignFromDB(newMember);
 
 					this.client.getLst_chatMemberList().add(newMember);
-//					this.client.getReachabilityService().ensureAutoTropoMarginCalculated(newMember);
+					this.client.getReachabilityService().ensureAutoTropoMarginCalculated(newMember);
 
 					this.client.getDbHandler().storeChatMember(newMember);
 				}

src/main/java/kst4contest/controller/ReachabilityService.java

@@ -1,12 +1,4 @@
 package kst4contest.controller;
-import kst4contest.view.map.MapCallsignRawSnapshot;
-
-import java.util.ArrayList;
-import java.util.Collections;
-import java.util.List;
-import java.util.Locale;
-import java.util.Map;
-import java.util.function.Consumer;
 
 import javafx.application.Platform;
 import kst4contest.locatorUtils.Location;
@@ -15,12 +7,12 @@ import kst4contest.model.ChatCategory;
 import kst4contest.model.ChatMember;
 import kst4contest.model.ChatPreferences;
 import kst4contest.view.map.GeometryOnlyPathAnalysisService;
-
 import kst4contest.view.map.OpenMeteoTerrainProfileProvider;
 import kst4contest.view.map.PathAnalysisRequest;
 import kst4contest.view.map.PathAnalysisResult;
 import kst4contest.view.map.PathAnalysisService;
 import kst4contest.view.map.PathGeometryUtils;
+
 import java.util.Comparator;
 import java.util.EnumSet;
 import java.util.Objects;
@@ -29,57 +21,26 @@ import java.util.concurrent.ConcurrentHashMap;
 import java.util.concurrent.ExecutorService;
 import java.util.concurrent.Executors;
 import java.util.concurrent.ThreadFactory;
-import java.util.function.Consumer;
 
 /**
- * Central service for tropo/path reachability calculations.
+ * Background service for station reachability values used by the station table.
  *
- * <p>This service is now the single calculation path for:
- * <ul>
- *     <li>the station table Tropo column</li>
- *     <li>the Tropo filter/sorter</li>
- *     <li>the station map path-analysis detail panel</li>
- * </ul>
- *
- * <p>The service always calculates a full {@link PathAnalysisResult}. When the
- * result contains a usable link budget, the bidirectional SSB margin is copied
- * into all matching {@link ChatMember} objects. The UI can then sort/filter by
- * a simple number while the map still receives the full path result.</p>
+ * <p>The service performs the expensive full path analysis off the JavaFX thread,
+ * stores the bidirectional SSB margin in the ChatMember, and leaves the UI with a
+ * simple numeric value for sorting/filtering.</p>
  */
 public final class ReachabilityService {
 
-    private static final long FAILED_ANALYSIS_RETRY_DELAY_MS = 5L * 60L * 1000L;
-
     private final ChatController chatController;
     private final PathAnalysisService pathAnalysisService;
     private final ExecutorService executor;
 
     /**
-     * Prevents duplicate jobs for the same path while a calculation is already
-     * queued or running.
+     * Prevents duplicate jobs for the same logical station/band while a calculation
+     * is already queued or running.
      */
     private final Set<String> queuedCalculationKeys = ConcurrentHashMap.newKeySet();
 
-
-
-    /**
-     * Stores completed usable path-analysis results. Failed/no-budget results are
-     * not permanently cached so transient terrain/network problems can be retried.
-     */
-    private final Map<String, PathAnalysisResult> pathAnalysisResultCache = new ConcurrentHashMap<>();
-
-    /**
-     * Temporary callback list for map requests waiting for an already running
-     * background calculation.
-     */
-    private final Map<String, List<Consumer<PathAnalysisResult>>> pendingMapCallbacksByKey = new ConcurrentHashMap<>();
-
-    /**
-     * Prevents immediate retry loops for failed/no-budget analyses, especially
-     * when a TableView cell repeatedly asks for the same value.
-     */
-    private final Map<String, Long> failedCalculationRetryAfterEpochMs = new ConcurrentHashMap<>();
-
     public ReachabilityService(ChatController chatController) {
         this.chatController = Objects.requireNonNull(chatController, "chatController");
         this.pathAnalysisService = new GeometryOnlyPathAnalysisService(new OpenMeteoTerrainProfileProvider());
@@ -96,12 +57,8 @@ public final class ReachabilityService {
     }
 
     /**
-     * Ensures that a station/band SSB-margin value exists if it is already cached.
-     *
-     * <p>This method deliberately does not start online terrain analysis anymore.
-     * It is safe to call from table cells and filters because it will not consume
-     * API quota. Full calculations are now started only by explicit map/manual
-     * requests.</p>
+     * Ensures that a station/band SSB-margin value exists. Existing finite values
+     * and existing NaN failure markers are not recalculated automatically.
      *
      * @param member chatmember to evaluate
      * @param band band to evaluate
@@ -111,110 +68,36 @@ public final class ReachabilityService {
             return;
         }
 
-        if (member.hasFiniteTropoSsbMarginDb(band)) {
+        if (member.hasTropoSsbMarginDb(band)) {
             return;
         }
 
-        PathAnalysisRequest request = buildRequestForChatMember(member, band);
-        if (request == null) {
+        String calculationKey = buildCalculationKey(member, band);
+        if (!queuedCalculationKeys.add(calculationKey)) {
             return;
         }
 
-        PathAnalysisResult cachedResult = pathAnalysisResultCache.get(buildCalculationKey(request));
-        if (cachedResult != null) {
-            storePathAnalysisResultInChatMembers(member, band, cachedResult);
-        }
-    }
+        executor.submit(() -> {
+            double marginDb = Double.NaN;
+            try {
+                marginDb = calculateSsbMarginDb(member, band);
+            } catch (Exception exception) {
+                System.out.println("[ReachabilityService, warning]: analysis failed for "
+                        + member.getCallSignRaw() + " @" + band + ": " + exception.getMessage());
+            }
 
+            final double finalMarginDb = marginDb;
+            Runnable storeResult = () -> {
+                member.setTropoSsbMarginDb(band, finalMarginDb);
+                chatController.fireUserListUpdate("Reachability calculated");
+            };
 
-
-    /**
-     * Requests a full path analysis for the station map.
-     *
-     * <p>This is the only normal automatic entry point for online/full terrain
-     * analysis. The map needs the full PathAnalysisResult, and the station table
-     * needs the SSB margin. Both are produced here through the same calculation.</p>
-     *
-     * @param member best matching ChatMember, may be null when only a map snapshot exists
-     * @param selectedSnapshot selected map snapshot
-     * @param fxCallback callback executed on the JavaFX thread
-     */
-    public void requestPathAnalysisForMap(ChatMember member,
-                                          MapCallsignRawSnapshot selectedSnapshot,
-                                          Consumer<PathAnalysisResult> fxCallback) {
-
-        String ownLocator6 = normalizeLocator6(chatController.getChatPreferences().getStn_loginLocatorMainCat());
-
-        if (selectedSnapshot == null) {
-            dispatchFxCallback(fxCallback, PathAnalysisResult.waitingForSelection(ownLocator6));
-            return;
-        }
-
-        String targetLocator6 = normalizeLocator6(selectedSnapshot.locator6());
-
-        if (ownLocator6.length() != 6) {
-            dispatchFxCallback(fxCallback,
-                    PathAnalysisResult.waitingForValidHomeLocator(ownLocator6, targetLocator6));
-            return;
-        }
-
-        if (!selectedSnapshot.hasUsablePosition()) {
-            dispatchFxCallback(fxCallback,
-                    PathAnalysisResult.waitingForValidTarget(ownLocator6, targetLocator6));
-            return;
-        }
-
-        double analysisFrequencyMHz = PathGeometryUtils.resolveAnalysisFrequencyMHz(
-                selectedSnapshot.lastKnownFrequenciesByBand()
-        );
-
-        if (!Double.isFinite(analysisFrequencyMHz) || analysisFrequencyMHz <= 0.0) {
-            Band fallbackBand = member == null ? Band.B_144 : resolveAutoBand(member);
-            analysisFrequencyMHz = resolveAnalysisFrequencyForBand(member, fallbackBand);
-        }
-
-        Band analysisBand = Band.fromFrequency(analysisFrequencyMHz);
-        if (analysisBand == null) {
-            analysisBand = member == null ? Band.B_144 : resolveAutoBand(member);
-        }
-
-        PathAnalysisRequest request = buildRequest(
-                ownLocator6,
-                selectedSnapshot.callSignRaw(),
-                targetLocator6,
-                selectedSnapshot.latitudeDeg(),
-                selectedSnapshot.longitudeDeg(),
-                analysisFrequencyMHz
-        );
-
-        requestPathAnalysisAndStore(member, analysisBand, request, fxCallback);
-    }
-
-
-
-    /**
-     * Starts a full on-demand reachability calculation for one station row.
-     *
-     * <p>Use this for explicit operator actions only. It may call the online terrain
-     * API and therefore must not be used from TableView cell factories or automatic
-     * chat-join processing.</p>
-     *
-     * @param member station to calculate
-     * @param band selected reachability band
-     */
-    public void calculateSelectedStationOnDemand(ChatMember member, Band band) {
-        if (member == null || band == null) {
-            return;
-        }
-
-        PathAnalysisRequest request = buildRequestForChatMember(member, band);
-        if (request == null) {
-            member.setTropoSsbMarginDb(band, Double.NaN);
-            chatController.fireUserListUpdate("Reachability unavailable");
-            return;
-        }
-
-        requestPathAnalysisAndStore(member, band, request, null);
+            if (Platform.isFxApplicationThread()) {
+                storeResult.run();
+            } else {
+                Platform.runLater(storeResult);
+            }
+        });
     }
 
     /**
@@ -278,222 +161,42 @@ public final class ReachabilityService {
         executor.shutdownNow();
     }
 
-    /**
-     * Starts or reuses one shared path-analysis calculation.
-     *
-     * @param member matching ChatMember, may be null for map-only snapshots
-     * @param band band under which the value is stored in ChatMember
-     * @param request full path-analysis request
-     * @param fxCallback optional map callback
-     */
-    private void requestPathAnalysisAndStore(ChatMember member,
-                                             Band band,
-                                             PathAnalysisRequest request,
-                                             Consumer<PathAnalysisResult> fxCallback) {
-
-        if (request == null || band == null) {
-            return;
-        }
-
-        String calculationKey = buildCalculationKey(request);
-
-        PathAnalysisResult cachedResult = pathAnalysisResultCache.get(calculationKey);
-        if (cachedResult != null) {
-            storePathAnalysisResultInChatMembers(member, band, cachedResult);
-            dispatchFxCallback(fxCallback, cachedResult);
-            return;
-        }
-
-        Long retryAfterEpochMs = failedCalculationRetryAfterEpochMs.get(calculationKey);
-        if (retryAfterEpochMs != null && System.currentTimeMillis() < retryAfterEpochMs) {
-            dispatchFxCallback(fxCallback, createNoProfileResult(
-                    request,
-                    "Previous path analysis failed or the terrain API limit was reached. Retry is delayed briefly."
-            ));
-            return;
-        }
-
-        addPendingCallback(calculationKey, fxCallback);
-
-        if (!queuedCalculationKeys.add(calculationKey)) {
-            return;
-        }
-
-        executor.submit(() -> {
-            PathAnalysisResult result;
-
-            try {
-                result = pathAnalysisService.analyze(request);
-                if (result == null) {
-                    result = createNoProfileResult(request, "Path analysis returned no result.");
-                }
-            } catch (Exception exception) {
-                result = createNoProfileResult(
-                        request,
-                        "Path analysis failed: " + exception.getMessage()
-                );
-            }
-
-            boolean usableBudget = hasUsableLinkBudget(result);
-
-            if (usableBudget) {
-                pathAnalysisResultCache.put(calculationKey, result);
-                failedCalculationRetryAfterEpochMs.remove(calculationKey);
-            } else {
-                failedCalculationRetryAfterEpochMs.put(
-                        calculationKey,
-                        System.currentTimeMillis() + FAILED_ANALYSIS_RETRY_DELAY_MS
-                );
-            }
-
-            queuedCalculationKeys.remove(calculationKey);
-
-            PathAnalysisResult finalResult = result;
-            Runnable updateTask = () -> {
-                storePathAnalysisResultInChatMembers(member, band, finalResult);
-                dispatchAndClearPendingCallbacks(calculationKey, finalResult);
-                chatController.fireUserListUpdate("Reachability calculated");
-            };
-
-            if (Platform.isFxApplicationThread()) {
-                updateTask.run();
-            } else {
-                Platform.runLater(updateTask);
-            }
-        });
-    }
-
-    /**
-     * Builds a path-analysis request from a ChatMember row.
-     *
-     * @param member station row
-     * @param band selected reachability band
-     * @return request or null if locators are not usable
-     */
-    private PathAnalysisRequest buildRequestForChatMember(ChatMember member, Band band) {
+    private double calculateSsbMarginDb(ChatMember member, Band band) {
         String ownLocator6 = normalizeLocator6(chatController.getChatPreferences().getStn_loginLocatorMainCat());
         String targetLocator6 = normalizeLocator6(member.getQra());
 
         if (ownLocator6.length() != 6 || targetLocator6.length() != 6) {
-            return null;
+            return Double.NaN;
         }
 
+        Location homeLocation = new Location(ownLocator6);
         Location targetLocation = new Location(targetLocator6);
+
         double analysisFrequencyMHz = resolveAnalysisFrequencyForBand(member, band);
 
-        return buildRequest(
+        PathAnalysisRequest request = new PathAnalysisRequest(
                 ownLocator6,
+                homeLocation.getLatitude().toDegrees(),
+                homeLocation.getLongitude().toDegrees(),
                 member.getCallSignRaw(),
                 targetLocator6,
                 targetLocation.getLatitude().toDegrees(),
                 targetLocation.getLongitude().toDegrees(),
-                analysisFrequencyMHz
-        );
-    }
-
-    /**
-     * Builds the shared PathAnalysisRequest used by map and table/manual requests.
-     */
-    private PathAnalysisRequest buildRequest(String ownLocator6,
-                                             String targetCallsignRaw,
-                                             String targetLocator6,
-                                             double targetLatitudeDeg,
-                                             double targetLongitudeDeg,
-                                             double analysisFrequencyMHz) {
-
-        Location homeLocation = new Location(ownLocator6);
-
-        return new PathAnalysisRequest(
-                ownLocator6,
-                homeLocation.getLatitude().toDegrees(),
-                homeLocation.getLongitude().toDegrees(),
-                targetCallsignRaw,
-                targetLocator6,
-                targetLatitudeDeg,
-                targetLongitudeDeg,
                 analysisFrequencyMHz,
                 chatController.getChatPreferences().getStn_pathAnalysisOwnAntennaHeightMeters(),
                 chatController.getChatPreferences().getStn_pathAnalysisDefaultTargetAntennaHeightMeters(),
                 PathGeometryUtils.DEFAULT_EFFECTIVE_EARTH_RADIUS_FACTOR,
                 chatController.getChatPreferences().buildPathLinkBudgetSettings()
         );
+
+        PathAnalysisResult result = pathAnalysisService.analyze(request);
+        if (result == null || result.linkBudgetSummary() == null || !result.linkBudgetSummary().hasUsableBudget()) {
+            return Double.NaN;
+        }
+
+        return result.linkBudgetSummary().bidirectionalSsbMarginDb();
     }
 
-    /**
-     * Stores the SSB margin from a completed analysis in all matching ChatMember
-     * objects. Matching uses raw callsign and locator.
-     */
-    private void storePathAnalysisResultInChatMembers(ChatMember primaryMember,
-                                                      Band band,
-                                                      PathAnalysisResult result) {
-
-        if (band == null || result == null) {
-            return;
-        }
-
-        double marginDb = hasUsableLinkBudget(result)
-                ? result.linkBudgetSummary().bidirectionalSsbMarginDb()
-                : Double.NaN;
-
-        if (primaryMember != null) {
-            primaryMember.setTropoSsbMarginDb(band, marginDb);
-        }
-
-        String resultCallSignRaw = normalizeCallsignRaw(result.toCallsignRaw());
-        String resultLocator6 = normalizeLocator6(result.toLocator6());
-
-        for (ChatMember member : chatController.snapshotChatMembers()) {
-            if (member == null) {
-                continue;
-            }
-
-            String memberCallSignRaw = normalizeCallsignRaw(member.getCallSignRaw());
-            if (!resultCallSignRaw.isBlank() && !resultCallSignRaw.equals(memberCallSignRaw)) {
-                continue;
-            }
-
-            String memberLocator6 = normalizeLocator6(member.getQra());
-            if (!resultLocator6.isBlank() && !resultLocator6.equals(memberLocator6)) {
-                continue;
-            }
-
-            member.setTropoSsbMarginDb(band, marginDb);
-        }
-    }
-
-    /**
-     * Resolves the analysis frequency from a map snapshot first, because the map
-     * aggregates all visible ChatMember variants and often knows the best current
-     * frequency per band.
-     *
-     * @param member fallback member
-     * @param selectedSnapshot selected map snapshot
-     * @return analysis frequency in MHz
-     */
-    private double resolveAnalysisFrequencyForSnapshot(ChatMember member, MapCallsignRawSnapshot selectedSnapshot) {
-        if (selectedSnapshot != null) {
-            double snapshotFrequencyMHz =
-                    PathGeometryUtils.resolveAnalysisFrequencyMHz(selectedSnapshot.lastKnownFrequenciesByBand());
-
-            if (Double.isFinite(snapshotFrequencyMHz) && snapshotFrequencyMHz > 0.0) {
-                return snapshotFrequencyMHz;
-            }
-        }
-
-        Band fallbackBand = member == null ? Band.B_144 : resolveAutoBand(member);
-        return resolveAnalysisFrequencyForBand(member, fallbackBand);
-    }
-
-    /**
-     * Resolves the analysis frequency for one member/band pair.
-     *
-     * <p>Preference order:
-     * <ol>
-     *     <li>knownActiveBands frequency for the band</li>
-     *     <li>current displayed QRG if it belongs to the same band</li>
-     *     <li>band default frequency</li>
-     * </ol>
-     */
     private double resolveAnalysisFrequencyForBand(ChatMember member, Band band) {
         if (member != null && member.getKnownActiveBands() != null) {
             ChatMember.ActiveFrequencyInfo activeFrequencyInfo = member.getKnownActiveBands().get(band);
@@ -504,148 +207,19 @@ public final class ReachabilityService {
             }
         }
 
-        if (member != null && member.getFrequency() != null && member.getFrequency().getValue() != null) {
-            double parsedFrequencyMHz = PathGeometryUtils.tryParseFrequencyMHz(member.getFrequency().getValue());
-            if (Double.isFinite(parsedFrequencyMHz) && parsedFrequencyMHz > 0.0) {
-                Band parsedBand = Band.fromFrequency(parsedFrequencyMHz);
-                if (parsedBand == null || parsedBand == band) {
-                    return parsedFrequencyMHz;
-                }
-            }
-        }
-
         return band.getDefaultAnalysisFrequencyMHz();
     }
 
-    /**
-     * Adds a map callback to the pending callback list for one calculation key.
-     *
-     * @param calculationKey path key
-     * @param fxCallback callback to add
-     */
-    private void addPendingCallback(String calculationKey, Consumer<PathAnalysisResult> fxCallback) {
-        if (fxCallback == null) {
-            return;
-        }
-
-        pendingMapCallbacksByKey
-                .computeIfAbsent(
-                        calculationKey,
-                        ignored -> Collections.synchronizedList(new ArrayList<>())
-                )
-                .add(fxCallback);
-    }
-
-    /**
-     * Dispatches and removes all callbacks waiting for one completed calculation.
-     *
-     * @param calculationKey path key
-     * @param result completed result
-     */
-    private void dispatchAndClearPendingCallbacks(String calculationKey, PathAnalysisResult result) {
-        List<Consumer<PathAnalysisResult>> callbacks = pendingMapCallbacksByKey.remove(calculationKey);
-        if (callbacks == null || callbacks.isEmpty()) {
-            return;
-        }
-
-        List<Consumer<PathAnalysisResult>> callbackSnapshot;
-        synchronized (callbacks) {
-            callbackSnapshot = new ArrayList<>(callbacks);
-        }
-
-        for (Consumer<PathAnalysisResult> callback : callbackSnapshot) {
-            dispatchFxCallback(callback, result);
-        }
-    }
-
-    /**
-     * Executes a map callback on the JavaFX application thread.
-     *
-     * @param fxCallback callback to execute
-     * @param result result to pass
-     */
-    private void dispatchFxCallback(Consumer<PathAnalysisResult> fxCallback, PathAnalysisResult result) {
-        if (fxCallback == null) {
-            return;
-        }
-
-        if (Platform.isFxApplicationThread()) {
-            fxCallback.accept(result);
-        } else {
-            Platform.runLater(() -> fxCallback.accept(result));
-        }
-    }
-
-    /**
-     * Checks whether the result contains a usable link-budget summary.
-     *
-     * @param result path-analysis result
-     * @return true if SSB margin can be read
-     */
-    private boolean hasUsableLinkBudget(PathAnalysisResult result) {
-        return result != null
-                && result.linkBudgetSummary() != null
-                && result.linkBudgetSummary().hasUsableBudget();
-    }
-
-    /**
-     * Creates a no-profile/no-budget result for failed service calculations.
-     *
-     * @param request original request
-     * @param statusText status shown in the map detail panel
-     * @return placeholder path result
-     */
-    private PathAnalysisResult createNoProfileResult(PathAnalysisRequest request, String statusText) {
-        return PathAnalysisResult.noProfile(
-                "Reachability",
-                request.fromLocator6(),
-                request.toLocator6(),
-                request.toCallsignRaw(),
-                Double.NaN,
-                Double.NaN,
-                request.homeAntennaHeightMeters(),
-                request.targetAntennaHeightMeters(),
-                request.frequencyMHz(),
-                statusText
-        );
-    }
-
-    /**
-     * Builds a stable calculation key.
-     *
-     * <p>The key includes station, locators, frequency, antenna heights and link
-     * budget settings. If any relevant input changes, a new calculation is allowed.</p>
-     */
-    private String buildCalculationKey(PathAnalysisRequest request) {
-        return normalizeLocator6(request.fromLocator6())
-                + "|"
-                + normalizeCallsignRaw(request.toCallsignRaw())
-                + "|"
-                + normalizeLocator6(request.toLocator6())
-                + "|"
-                + String.format(Locale.US, "%.5f", request.toLatitudeDeg())
-                + "|"
-                + String.format(Locale.US, "%.5f", request.toLongitudeDeg())
-                + "|"
-                + String.format(Locale.US, "%.3f", request.frequencyMHz())
-                + "|"
-                + String.format(Locale.US, "%.1f", request.homeAntennaHeightMeters())
-                + "|"
-                + String.format(Locale.US, "%.1f", request.targetAntennaHeightMeters())
-                + "|"
-                + request.linkBudgetSettings();
-    }
-
-    private String normalizeCallsignRaw(String callSignRaw) {
-        return callSignRaw == null ? "" : callSignRaw.trim().toUpperCase(Locale.ROOT);
+    private String buildCalculationKey(ChatMember member, Band band) {
+        String callSignRaw = member.getCallSignRaw() == null ? "" : member.getCallSignRaw();
+        String locator = member.getQra() == null ? "" : member.getQra();
+        return callSignRaw.trim().toUpperCase() + "|" + locator.trim().toUpperCase() + "|" + band.name();
     }
 
     private String normalizeLocator6(String locator) {
-        return locator == null ? "" : locator.trim().toUpperCase(Locale.ROOT);
+        return locator == null ? "" : locator.trim().toUpperCase();
     }
 
-
-
     private static final class ReachabilityThreadFactory implements ThreadFactory {
         @Override
         public Thread newThread(Runnable runnable) {

src/main/java/kst4contest/controller/ReadUDPByWintestThread.java

@@ -2,7 +2,6 @@ package kst4contest.controller;
 
 import javafx.application.Platform;
 import kst4contest.ApplicationConstants;
-import kst4contest.model.Band;
 import kst4contest.model.ChatMember;
 import kst4contest.model.ThreadStateMessage;
 import kst4contest.view.GuiUtils;
@@ -287,72 +286,6 @@ public class ReadUDPByWintestThread extends Thread {
 //        socket.send(new DatagramPacket(bytes, bytes.length, broadcast, 9871));
 //    }
 
-
-    /**
-     * Resolves the project Band enum from Win-Test band IDs.
-     *
-     * <p>Only bands that exist in the current Band enum are returned. 50/70 MHz are
-     * still represented as worked flags in ChatMember, but they are not part of the
-     * current Reachability/New-Locator band enum.</p>
-     *
-     * @param bandId Win-Test band id from ADDQSO
-     * @return matching Band or null
-     */
-    private Band helper_resolveBandFromWinTestBandId(String bandId) {
-        if (bandId == null) {
-            return null;
-        }
-
-        switch (bandId.trim()) {
-            case "12": return Band.B_144;
-            case "14": return Band.B_432;
-            case "16": return Band.B_1296;
-            case "17": return Band.B_2320;
-            case "18": return Band.B_3400;
-            case "19": return Band.B_5760;
-            case "20": return Band.B_10G;
-            case "21": return Band.B_24G;
-            default: return null;
-        }
-    }
-
-    /**
-     * Extracts the locator from a Win-Test ADDQSO packet.
-     *
-     * <p>Current parser model based on the existing split-by-quotes code:
-     * <ul>
-     *     <li>{@code split("\"")[7]}  = callsign</li>
-     *     <li>{@code split("\"")[11]} = received exchange, e.g. 599001</li>
-     *     <li>{@code split("\"")[13]} = locator, e.g. JO51UM</li>
-     * </ul>
-     *
-     * <p>If the dedicated locator field is empty, the exchange is used as fallback.</p>
-     *
-     * @param msg raw ADDQSO message
-     * @return normalized six-character locator or null
-     */
-    private String helper_resolveLocatorFromWinTestAddQso(String msg) {
-        if (msg == null) {
-            return null;
-        }
-
-        String[] quotedParts = msg.split("\"");
-
-        if (quotedParts.length > 13) {
-            String locator = WorkedGrossFieldCache.extractLocator6(quotedParts[13]);
-            if (locator != null) {
-                return locator;
-            }
-        }
-
-        if (quotedParts.length > 11) {
-            return WorkedGrossFieldCache.extractLocator6(quotedParts[11]);
-        }
-
-        return null;
-    }
-
-
     /**
      * Catches add-qso messages of wintest if a new qso gets into the log<br/>
      *
@@ -377,22 +310,16 @@ public class ReadUDPByWintestThread extends Thread {
 //            receivedQsos.put(qsoNumber, msg);
 //            lastKnownQso = Math.max(lastKnownQso, qsoNumber);
             String callSignCatched = msg.split("\"") [7];
-            String locatorFromLogger = helper_resolveLocatorFromWinTestAddQso(msg);
 
             ChatMember workedCall = new ChatMember();
             workedCall.setCallSign(callSignCatched);
             workedCall.setWorked(true); //its worked at this place, for sure!
 
-            if (locatorFromLogger != null) {
-                workedCall.setQra(locatorFromLogger);
-            }
-
             ArrayList<Integer> markTheseChattersAsWorked = client.checkListForChatMemberIndexesByCallSign(workedCall);
 
             String bandId;
             bandId = msg.split("\"")[6].split(" ")[4].trim();
 
-            Band workedBand = helper_resolveBandFromWinTestBandId(bandId);
             switch (bandId) {
                 case "10" -> workedCall.setWorked50(true);
                 case "11" -> workedCall.setWorked70(true);
@@ -409,10 +336,6 @@ public class ReadUDPByWintestThread extends Thread {
                 default -> System.out.println("[WinTestUDPRcvr: warning] Unbekannte Band-ID: " + bandId);
             }
 
-            if (workedBand != null && locatorFromLogger != null) {
-                this.client.registerWorkedGrossField(workedBand, locatorFromLogger, workedCall, "WINTEST");
-            }
-
             if (!markTheseChattersAsWorked.isEmpty()) {
                 //Worked call is part of the current chatmember list
 
@@ -422,13 +345,6 @@ public class ReadUDPByWintestThread extends Thread {
 
                     modifyThat.setWorked(true); //worked its for sure
 
-                    if (locatorFromLogger != null
-                            && (modifyThat.getQra() == null
-                            || modifyThat.getQra().isBlank()
-                            || "unknown".equalsIgnoreCase(modifyThat.getQra()))) {
-                        modifyThat.setQra(locatorFromLogger);
-                    }
-
                     if (workedCall.isWorked50()) {
                         modifyThat.setWorked50(true);
                     } else if (workedCall.isWorked70()) {
@@ -482,11 +398,7 @@ public class ReadUDPByWintestThread extends Thread {
             if (!isInChat) {
 
                 workedCall.setName("unknown");
-
-                if (workedCall.getQra() == null || workedCall.getQra().isBlank()) {
-                    workedCall.setQra("unknown");
-                }
-
+                workedCall.setQra("unknown");
                 workedCall.setLastActivity(new Utils4KST().time_generateActualTimeInDateFormat());
                 this.client.getDbHandler().storeChatMember(workedCall);
             }

src/main/java/kst4contest/controller/ReadUDPbyUCXMessageThread.java

@@ -404,6 +404,10 @@ public class ReadUDPbyUCXMessageThread extends Thread {
 								break;
 						}
 
+//						if (!client.getMap_ucxLogInfoWorkedCalls().containsKey("call")) {
+//							client.getMap_ucxLogInfoWorkedCalls().put(call, workedCall);
+
+//						} else 
 						{
 							/**
 							 * That means, the station is worked already but maybe at another band. So we

src/main/java/kst4contest/controller/WorkedGrossFieldCache.java

@@ -119,31 +119,6 @@ public final class WorkedGrossFieldCache {
                 .contains(grossField);
     }
 
-    /**
-     * Checks whether a locator gross field has already been worked on any band.
-     *
-     * <p>The UI grid status and the "Only new grids" filter use this any-band logic.
-     * This avoids user errors caused by wrong active-band settings and fits single
-     * band contests such as NAC better.</p>
-     *
-     * @param locatorOrGrossField six-character locator or four-character gross field
-     * @return true if the gross field exists in the cache on any band
-     */
-    public synchronized boolean isGrossFieldWorkedAny(String locatorOrGrossField) {
-        String grossField = extractGrossField(locatorOrGrossField);
-        if (grossField == null) {
-            return false;
-        }
-
-        for (Set<String> workedGrossFields : workedGrossFieldsByBand.values()) {
-            if (workedGrossFields != null && workedGrossFields.contains(grossField)) {
-                return true;
-            }
-        }
-
-        return false;
-    }
-
     /**
      * Tries to normalize a locator. Accepts a plain six-character locator or extracts
      * one from exchange strings such as "001JO41HK".

src/main/java/kst4contest/model/ChatMember.java

@@ -659,27 +659,6 @@ public class ChatMember {
 		return band != null && this.tropoSsbMarginDbByBand.containsKey(band);
 	}
 
-
-
-	/**
-	 * Returns true only when a finite, usable tropo SSB margin is stored for the band.
-	 *
-	 * <p>This is intentionally different from {@link #hasTropoSsbMarginDb(Band)}:
-	 * a stored NaN means that an analysis was attempted but did not produce a usable
-	 * link budget. Such failed values should not permanently block later retries.</p>
-	 *
-	 * @param band band to check
-	 * @return true if a finite SSB margin exists
-	 */
-	public boolean hasFiniteTropoSsbMarginDb(Band band) {
-		if (band == null || !this.tropoSsbMarginDbByBand.containsKey(band)) {
-			return false;
-		}
-
-		Double storedValue = this.tropoSsbMarginDbByBand.get(band);
-		return storedValue != null && Double.isFinite(storedValue);
-	}
-
 	/**
 	 * Reads the calculated tropo SSB margin for one band.
 	 *
@@ -699,34 +678,21 @@ public class ChatMember {
 		return OptionalDouble.of(storedValue);
 	}
 
-
 	/**
 	 * Formats the calculated tropo margin for direct table display.
 	 *
-	 * <p>The method distinguishes three states:
-	 * <ul>
-	 *     <li>{@code ... @144}: analysis has not run yet</li>
-	 *     <li>{@code ? @144}: analysis ran, but no usable link budget was produced</li>
-	 *     <li>{@code +8.4 dB @144}: finite SSB margin exists</li>
-	 * </ul>
-	 *
 	 * @param band selected/auto-resolved reachability band
-	 * @return display text such as "+8.4 dB @144", "? @144" or "... @144"
+	 * @return display text such as "+8.4 dB @144" or "- @144"
 	 */
 	public String formatTropoSsbMarginForBand(Band band) {
 		String bandLabel = band == null ? "?" : band.getDisplayLabel();
+		OptionalDouble marginDb = getTropoSsbMarginDb(band);
 
-		if (band == null || !this.tropoSsbMarginDbByBand.containsKey(band)) {
-			return "... @" + bandLabel;
+		if (marginDb.isEmpty() || !Double.isFinite(marginDb.getAsDouble())) {
+			return "- @" + bandLabel;
 		}
 
-		Double storedValue = this.tropoSsbMarginDbByBand.get(band);
-
-		if (storedValue == null || !Double.isFinite(storedValue)) {
-			return "? @" + bandLabel;
-		}
-
-		return String.format(Locale.US, "%+.1f dB @%s", storedValue, bandLabel);
+		return String.format(Locale.US, "%+.1f dB @%s", marginDb.getAsDouble(), bandLabel);
 	}
 
 

src/main/java/kst4contest/utils/PlayAudioUtils.java

@@ -1,18 +1,13 @@
 package kst4contest.utils;
 
-import javazoom.jl.decoder.JavaLayerException;
-import javazoom.jl.player.Player;
+import javafx.scene.media.Media;
+import javafx.scene.media.MediaPlayer;
 import kst4contest.ApplicationConstants;
 
-import java.io.BufferedInputStream;
-import java.io.FileInputStream;
-import java.io.IOException;
+import java.io.File;
 import java.util.Arrays;
+import java.util.LinkedList;
 import java.util.Queue;
-import java.util.concurrent.ConcurrentLinkedQueue;
-import java.util.concurrent.ExecutorService;
-import java.util.concurrent.Executors;
-import java.util.concurrent.atomic.AtomicBoolean;
 
 /**
  * This part of the client drives the sounds. Its a singleton instance. All audio outs are directed to this instance.<br>
@@ -118,16 +113,8 @@ public class PlayAudioUtils {
 
     }
 
-    private final Queue<String> musicList = new ConcurrentLinkedQueue<>();
-    /** True once audio fails; prevents repeated error logs and further play attempts. */
-    private final AtomicBoolean audioUnavailable = new AtomicBoolean(false);
-    /** True while the drain loop is running; prevents duplicate concurrent drains. */
-    private final AtomicBoolean playing = new AtomicBoolean(false);
-    private final ExecutorService audioThread = Executors.newSingleThreadExecutor(r -> {
-        Thread t = new Thread(r, "audio-player");
-        t.setDaemon(true);
-        return t;
-    });
+    private Queue<Media> musicList = new LinkedList<Media>();
+    private MediaPlayer mediaPlayer ;
 
     /**
      * Plays notification sounds out of the windws 95 box by given action character<br/>
@@ -144,31 +131,40 @@ public class PlayAudioUtils {
      */
     public void playNoiseLauncher(char actionChar) {
 
-        switch (actionChar){
-            case '-':
-                musicList.add(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/tick.mp3"));
-                break;
-            case '!':
-                musicList.add(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/NOISESTARTUP.mp3"));
-                break;
-            case 'C':
-                musicList.add(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/NOISECQWINDOW.mp3"));
-                break;
-            case 'P':
-                musicList.add(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/NOISEPMWINDOW.mp3"));
-                break;
-            case 'E':
-                musicList.add(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/NOISEERROR.mp3"));
-                break;
-            case 'N':
-                musicList.add(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/NOISENOTIFY.mp3"));
-                break;
 
-            default:
-                System.out.println("[KST4ContestApp, warning, letter not defined!]");
+
+//        ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/NOISESTARTUP.mp3");
+
+
+            switch (actionChar){
+                case '-':
+                    musicList.add(new Media(new File (ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/tick.mp3")).toURI().toString()));
+                    break;
+                case '!':
+                    musicList.add(new Media(new File (ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/NOISESTARTUP.mp3")).toURI().toString()));
+                    break;
+                case 'C':
+                    musicList.add(new Media(new File (ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/NOISECQWINDOW.mp3")).toURI().toString()));
+                    break;
+                case 'P':
+                    musicList.add(new Media(new File (ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/NOISEPMWINDOW.mp3")).toURI().toString()));
+                    break;
+                case 'E':
+                    musicList.add(new Media(new File (ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/NOISEERROR.mp3")).toURI().toString()));
+                    break;
+                case 'N':
+                    musicList.add(new Media(new File (ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/NOISENOTIFY.mp3")).toURI().toString()));
+                    break;
+//                case 'M':
+//                    musicList.add(new Media(new File ("VOICE.mp3").toURI().toString()));
+//                    break;
+
+                default:
+                    System.out.println("[KST4ContestApp, warning, letter not defined!]");
 
         }
         playMusic();
+//		mediaPlayer.dispose();
 
     }
 
@@ -187,124 +183,125 @@ public class PlayAudioUtils {
         for (char letterToPlay: playThisInCW){
             switch (letterToPlay){
                 case 'A':
-                    musicList.add(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/LTTRA.mp3"));
+                    musicList.add(new Media(new File(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/LTTRA.mp3")).toURI().toString()));
                     break;
                 case 'B':
-                    musicList.add(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/LTTRB.mp3"));
+                    musicList.add(new Media(new File(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/LTTRB.mp3")).toURI().toString()));
                     break;
                 case 'C':
-                    musicList.add(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/LTTRC.mp3"));
+                    musicList.add(new Media(new File(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/LTTRC.mp3")).toURI().toString()));
                     break;
                 case 'D':
-                    musicList.add(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/LTTRD.mp3"));
+                    musicList.add(new Media(new File(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/LTTRD.mp3")).toURI().toString()));
                     break;
                 case 'E':
-                    musicList.add(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/LTTRE.mp3"));
+                    musicList.add(new Media(new File(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/LTTRE.mp3")).toURI().toString()));
                     break;
                 case 'F':
-                    musicList.add(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/LTTRF.mp3"));
+                    musicList.add(new Media(new File(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/LTTRF.mp3")).toURI().toString()));
                     break;
                 case 'G':
-                    musicList.add(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/LTTRG.mp3"));
+                    musicList.add(new Media(new File(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/LTTRG.mp3")).toURI().toString()));
                     break;
                 case 'H':
-                    musicList.add(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/LTTRH.mp3"));
+                    musicList.add(new Media(new File(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/LTTRH.mp3")).toURI().toString()));
                     break;
                 case 'I':
-                    musicList.add(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/LTTRI.mp3"));
+                    musicList.add(new Media(new File(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/LTTRI.mp3")).toURI().toString()));
                     break;
                 case 'J':
-                    musicList.add(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/LTTRJ.mp3"));
+                    musicList.add(new Media(new File(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/LTTRJ.mp3")).toURI().toString()));
                     break;
                 case 'K':
-                    musicList.add(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/LTTRK.mp3"));
+                    musicList.add(new Media(new File(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/LTTRK.mp3")).toURI().toString()));
                     break;
                 case 'L':
-                    musicList.add(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/LTTRL.mp3"));
+                    musicList.add(new Media(new File(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/LTTRL.mp3")).toURI().toString()));
                     break;
                 case 'M':
-                    musicList.add(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/LTTRM.mp3"));
+                    musicList.add(new Media(new File(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/LTTRM.mp3")).toURI().toString()));
                     break;
                 case 'N':
-                    musicList.add(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/LTTRN.mp3"));
+                    musicList.add(new Media(new File(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/LTTRN.mp3")).toURI().toString()));
                     break;
                 case 'O':
-                    musicList.add(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/LTTRO.mp3"));
+                    musicList.add(new Media(new File(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/LTTRO.mp3")).toURI().toString()));
                     break;
                 case 'P':
-                    musicList.add(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/LTTRP.mp3"));
+                    musicList.add(new Media(new File(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/LTTRP.mp3")).toURI().toString()));
                     break;
                 case 'Q':
-                    musicList.add(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/LTTRQ.mp3"));
+                    musicList.add(new Media(new File(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/LTTRQ.mp3")).toURI().toString()));
                     break;
                 case 'R':
-                    musicList.add(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/LTTRR.mp3"));
+                    musicList.add(new Media(new File(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/LTTRR.mp3")).toURI().toString()));
                     break;
                 case 'S':
-                    musicList.add(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/LTTRS.mp3"));
+                    musicList.add(new Media(new File(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/LTTRS.mp3")).toURI().toString()));
                     break;
                 case 'T':
-                    musicList.add(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/LTTRT.mp3"));
+                    musicList.add(new Media(new File(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/LTTRT.mp3")).toURI().toString()));
                     break;
                 case 'U':
-                    musicList.add(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/LTTRU.mp3"));
+                    musicList.add(new Media(new File(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/LTTRU.mp3")).toURI().toString()));
                     break;
                 case 'V':
-                    musicList.add(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/LTTRV.mp3"));
+                    musicList.add(new Media(new File(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/LTTRV.mp3")).toURI().toString()));
                     break;
                 case 'W':
-                    musicList.add(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/LTTRW.mp3"));
+                    musicList.add(new Media(new File(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/LTTRW.mp3")).toURI().toString()));
                     break;
                 case 'X':
-                    musicList.add(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/LTTRX.mp3"));
+                    musicList.add(new Media(new File(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/LTTRX.mp3")).toURI().toString()));
                     break;
                 case 'Y':
-                    musicList.add(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/LTTRY.mp3"));
+                    musicList.add(new Media(new File(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/LTTRY.mp3")).toURI().toString()));
                     break;
                 case 'Z':
-                    musicList.add(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/LTTRZ.mp3"));
+                    musicList.add(new Media(new File(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/LTTRZ.mp3")).toURI().toString()));
                     break;
                 case '1':
-                    musicList.add(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/LTTR1.mp3"));
+                    musicList.add(new Media(new File(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/LTTR1.mp3")).toURI().toString()));
                     break;
                 case '2':
-                    musicList.add(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/LTTR2.mp3"));
+                    musicList.add(new Media(new File(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/LTTR2.mp3")).toURI().toString()));
                     break;
                 case '3':
-                    musicList.add(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/LTTR3.mp3"));
+                    musicList.add(new Media(new File(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/LTTR3.mp3")).toURI().toString()));
                     break;
                 case '4':
-                    musicList.add(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/LTTR4.mp3"));
+                    musicList.add(new Media(new File(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/LTTR4.mp3")).toURI().toString()));
                     break;
                 case '5':
-                    musicList.add(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/LTTR5.mp3"));
+                    musicList.add(new Media(new File(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/LTTR5.mp3")).toURI().toString()));
                     break;
                 case '6':
-                    musicList.add(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/LTTR6.mp3"));
+                    musicList.add(new Media(new File(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/LTTR6.mp3")).toURI().toString()));
                     break;
                 case '7':
-                    musicList.add(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/LTTR7.mp3"));
+                    musicList.add(new Media(new File(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/LTTR7.mp3")).toURI().toString()));
                     break;
                 case '8':
-                    musicList.add(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/LTTR8.mp3"));
+                    musicList.add(new Media(new File(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/LTTR8.mp3")).toURI().toString()));
                     break;
                 case '9':
-                    musicList.add(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/LTTR9.mp3"));
+                    musicList.add(new Media(new File(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/LTTR9.mp3")).toURI().toString()));
                     break;
                 case '0':
-                    musicList.add(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/LTTR0.mp3"));
+                    musicList.add(new Media(new File(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/LTTR0.mp3")).toURI().toString()));
                     break;
                 case '/':
-                    musicList.add(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/LTTRSTROKE.mp3"));
+                    musicList.add(new Media(new File(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/LTTRSTROKE.mp3")).toURI().toString()));
                     break;
                 case ' ':
-                    musicList.add(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/LTTRSPACE.mp3"));
+                    musicList.add(new Media(new File(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/LTTRSPACE.mp3")).toURI().toString()));
                     break;
                 default:
                     System.out.println("[KST4ContestApp, warning, letter not defined:] cwLetters = " + Arrays.toString(playThisInCW));
             }
         }
         playMusic();
+//		mediaPlayer.dispose();
 
     }
 
@@ -326,166 +323,162 @@ public class PlayAudioUtils {
         for (char letterToPlay: spellThisWithVoice){
             switch (letterToPlay){
                 case '!':
-                    musicList.add(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/VOICEBELL.mp3"));
+                    musicList.add(new Media(new File(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/VOICEBELL.mp3")).toURI().toString()));
                     break;
                 case '?':
-                    musicList.add(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/VOICEYOUGOTMAIL.mp3"));
+                    musicList.add(new Media(new File(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/VOICEYOUGOTMAIL.mp3")).toURI().toString()));
                     break;
                 case '#':
-                    musicList.add(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/VOICEHELLO.mp3"));
+                    musicList.add(new Media(new File(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/VOICEHELLO.mp3")).toURI().toString()));
                     break;
                 case '*':
-                    musicList.add(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/VOICE73.mp3"));
+                    musicList.add(new Media(new File(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/VOICE73.mp3")).toURI().toString()));
                     break;
                 case '$':
-                    musicList.add(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/VOICESTROKEPORTABLE.mp3"));
+                    musicList.add(new Media(new File(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/VOICESTROKEPORTABLE.mp3")).toURI().toString()));
                     break;
                 case 'A':
-                    musicList.add(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/VOICEA.mp3"));
+                    musicList.add(new Media(new File(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/VOICEA.mp3")).toURI().toString()));
                     break;
                 case 'B':
-                    musicList.add(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/VOICEB.mp3"));
+                    musicList.add(new Media(new File(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/VOICEB.mp3")).toURI().toString()));
                     break;
                 case 'C':
-                    musicList.add(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/VOICEC.mp3"));
+                    musicList.add(new Media(new File(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/VOICEC.mp3")).toURI().toString()));
                     break;
                 case 'D':
-                    musicList.add(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/VOICED.mp3"));
+                    musicList.add(new Media(new File(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/VOICED.mp3")).toURI().toString()));
                     break;
                 case 'E':
-                    musicList.add(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/VOICEE.mp3"));
+                    musicList.add(new Media(new File(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/VOICEE.mp3")).toURI().toString()));
                     break;
                 case 'F':
-                    musicList.add(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/VOICEF.mp3"));
+                    musicList.add(new Media(new File(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/VOICEF.mp3")).toURI().toString()));
                     break;
                 case 'G':
-                    musicList.add(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/VOICEG.mp3"));
+                    musicList.add(new Media(new File(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/VOICEG.mp3")).toURI().toString()));
                     break;
                 case 'H':
-                    musicList.add(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/VOICEH.mp3"));
+                    musicList.add(new Media(new File(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/VOICEH.mp3")).toURI().toString()));
                     break;
                 case 'I':
-                    musicList.add(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/VOICEI.mp3"));
+                    musicList.add(new Media(new File(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/VOICEI.mp3")).toURI().toString()));
                     break;
                 case 'J':
-                    musicList.add(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/VOICEJ.mp3"));
+                    musicList.add(new Media(new File(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/VOICEJ.mp3")).toURI().toString()));
                     break;
                 case 'K':
-                    musicList.add(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/VOICEK.mp3"));
+                    musicList.add(new Media(new File(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/VOICEK.mp3")).toURI().toString()));
                     break;
                 case 'L':
-                    musicList.add(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/VOICEL.mp3"));
+                    musicList.add(new Media(new File(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/VOICEL.mp3")).toURI().toString()));
                     break;
                 case 'M':
-                    musicList.add(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/VOICEM.mp3"));
+                    musicList.add(new Media(new File(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/VOICEM.mp3")).toURI().toString()));
                     break;
                 case 'N':
-                    musicList.add(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/VOICEN.mp3"));
+                    musicList.add(new Media(new File(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/VOICEN.mp3")).toURI().toString()));
                     break;
                 case 'O':
-                    musicList.add(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/VOICEO.mp3"));
+                    musicList.add(new Media(new File(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/VOICEO.mp3")).toURI().toString()));
                     break;
                 case 'P':
-                    musicList.add(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/VOICEP.mp3"));
+                    musicList.add(new Media(new File(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/VOICEP.mp3")).toURI().toString()));
                     break;
                 case 'Q':
-                    musicList.add(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/VOICEQ.mp3"));
+                    musicList.add(new Media(new File(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/VOICEQ.mp3")).toURI().toString()));
                     break;
                 case 'R':
-                    musicList.add(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/VOICER.mp3"));
+                    musicList.add(new Media(new File(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/VOICER.mp3")).toURI().toString()));
                     break;
                 case 'S':
-                    musicList.add(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/VOICES.mp3"));
+                    musicList.add(new Media(new File(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/VOICES.mp3")).toURI().toString()));
                     break;
                 case 'T':
-                    musicList.add(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/VOICET.mp3"));
+                    musicList.add(new Media(new File(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/VOICET.mp3")).toURI().toString()));
                     break;
                 case 'U':
-                    musicList.add(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/VOICEU.mp3"));
+                    musicList.add(new Media(new File(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/VOICEU.mp3")).toURI().toString()));
                     break;
                 case 'V':
-                    musicList.add(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/VOICEV.mp3"));
+                    musicList.add(new Media(new File(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/VOICEV.mp3")).toURI().toString()));
                     break;
                 case 'W':
-                    musicList.add(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/VOICEW.mp3"));
+                    musicList.add(new Media(new File(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/VOICEW.mp3")).toURI().toString()));
                     break;
                 case 'X':
-                    musicList.add(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/VOICEX.mp3"));
+                    musicList.add(new Media(new File(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/VOICEX.mp3")).toURI().toString()));
                     break;
                 case 'Y':
-                    musicList.add(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/VOICEY.mp3"));
+                    musicList.add(new Media(new File(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/VOICEY.mp3")).toURI().toString()));
                     break;
                 case 'Z':
-                    musicList.add(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/VOICEZ.mp3"));
+                    musicList.add(new Media(new File(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/VOICEZ.mp3")).toURI().toString()));
                     break;
                 case '1':
-                    musicList.add(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/VOICE1.mp3"));
+                    musicList.add(new Media(new File(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/VOICE1.mp3")).toURI().toString()));
                     break;
                 case '2':
-                    musicList.add(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/VOICE2.mp3"));
+                    musicList.add(new Media(new File(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/VOICE2.mp3")).toURI().toString()));
                     break;
                 case '3':
-                    musicList.add(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/VOICE3.mp3"));
+                    musicList.add(new Media(new File(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/VOICE3.mp3")).toURI().toString()));
                     break;
                 case '4':
-                    musicList.add(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/VOICE4.mp3"));
+                    musicList.add(new Media(new File(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/VOICE4.mp3")).toURI().toString()));
                     break;
                 case '5':
-                    musicList.add(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/VOICE5.mp3"));
+                    musicList.add(new Media(new File(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/VOICE5.mp3")).toURI().toString()));
                     break;
                 case '6':
-                    musicList.add(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/VOICE6.mp3"));
+                    musicList.add(new Media(new File(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/VOICE6.mp3")).toURI().toString()));
                     break;
                 case '7':
-                    musicList.add(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/VOICE7.mp3"));
+                    musicList.add(new Media(new File(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/VOICE7.mp3")).toURI().toString()));
                     break;
                 case '8':
-                    musicList.add(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/VOICE8.mp3"));
+                    musicList.add(new Media(new File(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/VOICE8.mp3")).toURI().toString()));
                     break;
                 case '9':
-                    musicList.add(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/VOICE9.mp3"));
+                    musicList.add(new Media(new File(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/VOICE9.mp3")).toURI().toString()));
                     break;
                 case '0':
-                    musicList.add(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/VOICE0.mp3"));
+                    musicList.add(new Media(new File(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/VOICE0.mp3")).toURI().toString()));
                     break;
                 case '/':
-                    musicList.add(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/VOICESTROKE.mp3"));
+                    musicList.add(new Media(new File(ApplicationFileUtils.getFilePath(ApplicationConstants.APPLICATION_NAME, "/VOICESTROKE.mp3")).toURI().toString()));
                     break;
+//				case ' ':
+//					musicList.add(new Media(new File ("VOICESPACE.mp3").toURI().toString()));
+//					break;
                 default:
                     System.out.println("[KST4ContestApp, warning, letter not defined:] cwLetters = " + Arrays.toString(spellThisWithVoice));
             }
         }
         playMusic();
+//		mediaPlayer.dispose();
 
     }
-
     private void playMusic() {
-        if (audioUnavailable.get()) {
-            musicList.clear();
+
+//		System.out.println("Kst4ContestApplication.playMusic");
+        if(musicList.peek() == null)
+        {
             return;
         }
-        // Only start a drain loop if none is running; the running loop will pick up new items itself.
-        if (!playing.compareAndSet(false, true)) return;
-        audioThread.submit(() -> {
-            String path;
-            while ((path = musicList.poll()) != null) {
-                if (audioUnavailable.get()) break;
-                try (FileInputStream fis = new FileInputStream(path);
-                     BufferedInputStream bis = new BufferedInputStream(fis)) {
-                    new Player(bis).play();
-                } catch (IOException | JavaLayerException e) {
-                    audioUnavailable.set(true);
-                    musicList.clear();
-                    System.out.println("[KST4ContestApp, warning, audio playback disabled (could not create media player): " + e + "]");
-                    break;
-                }
-            }
-            playing.set(false);
-            // Items may have been enqueued between the last poll() and playing.set(false);
-            // restart the drain loop if so.
-            if (!musicList.isEmpty() && !audioUnavailable.get()) {
+        mediaPlayer = new MediaPlayer(musicList.poll());
+        mediaPlayer.setRate(1.0);
+
+        mediaPlayer.setOnReady(() -> {
+            mediaPlayer.play();
+            mediaPlayer.setOnEndOfMedia(() -> {
+//				mediaPlayer.dispose();
                 playMusic();
-            }
+                if (musicList.isEmpty()) {
+//					mediaPlayer.dispose();
+                }
+            });
         });
+
     }
 }

src/main/java/kst4contest/view/GuiUtils.java

@@ -51,21 +51,26 @@ public class GuiUtils {
         }
 	}
 
-	/**
-	 * Requests a safe UI refresh of the filtered ChatMember list.
-	 *
-	 * <p>Older versions used the trick of adding/removing a dummy predicate. That can
-	 * break JavaFX SortedList internals when the table is sorted and a FilteredList
-	 * refilter happens at the same time. The controller-level refresh path is safer
-	 * because Kst4ContestApplication now re-applies the existing predicates directly.</p>
-	 *
-	 * @param chatController central controller
-	 */
-	private static void triggerUpdate(ChatController chatController) {
-		if (chatController == null) {
-			return;
-		}
+    private static void triggerUpdate(ChatController chatController) {
+        {
+            //trick to trigger gui changes on property changes of obects
 
-		chatController.fireUserListUpdate("Forced filtered ChatMember refresh");
-	}
+            Predicate<ChatMember> dummyPredicate = new Predicate<ChatMember>() {
+                @Override
+                public boolean test(ChatMember chatMember) {
+                    return true;
+                }
+            };
+
+            /**
+             * //TODO: following 2 lines are a quick fix to making disappear worked chatmembers of the list
+             * Thats uncomfortable due to this also causes selection changes,
+             * Better way is to change all worked and qrv values to observables and then trigger the underlying
+             * list to fire an invalidationevent. Really Todo!
+             */
+            chatController.getLst_chatMemberListFilterPredicates().add(dummyPredicate);
+            chatController.getLst_chatMemberListFilterPredicates().remove(dummyPredicate);
+
+        }
+    }
 }

src/main/java/kst4contest/view/Kst4ContestApplication.java

@@ -67,20 +67,11 @@ import kst4contest.utils.ApplicationFileUtils;
 import kst4contest.view.map.StationMapBridge;
 import kst4contest.view.map.StationMapView;
 import kst4contest.view.map.OfflineDemImportService;
-import kst4contest.controller.WorkedGrossFieldCache;
 
 
 public class Kst4ContestApplication extends Application implements StatusUpdateListener  {
 //	private static final Kst4ContestApplication dbcontroller = new DBController();
 	// Null means Auto: use the lowest session band, or category fallback.
-
-	// Enables optional color highlighting of the QRA/grid cell.
-// The status text itself remains visible independently of this flag.
-	private boolean gridSquareHighlightEnabled = false;
-
-	private PauseTransition userListRefreshCoalescer;
-	private String pendingUserListUpdateReason = "";
-
 	private Band selectedReachabilityBandOverride = null;
 
 	private StationMapView stationMapView; //view class for the avl stn map
@@ -964,7 +955,7 @@ public class Kst4ContestApplication extends Application implements StatusUpdateL
 									return true;
 								} else return false;
 							} catch (NullPointerException SenderNull) {
-//								System.out.println("KST4ContestApp, <<<catched error>>>: Sender/receiver of the message is unknown, categorizing is impossible: " + SenderNull.getMessage());
+								System.out.println("KST4ContestApp, <<<catched error>>>: Sender/receiver of the message is unknown, categorizing is impossible: " + SenderNull.getMessage());
 
 								return false;
 							}
@@ -1049,7 +1040,7 @@ public class Kst4ContestApplication extends Application implements StatusUpdateL
 					} else return false;
 
 				} catch (Exception exception) {
-//					System.out.println("KST4ContestApplication <<<catched ERROR>>>>: cant get sender infos due to sender is not known yet" + exception.getMessage());
+					System.out.println("KST4ContestApplication <<<catched ERROR>>>>: cant get sender infos due to sender is not known yet" + exception.getMessage());
 				 return false;
 				}
 			}
@@ -1065,31 +1056,6 @@ public class Kst4ContestApplication extends Application implements StatusUpdateL
 
 	}
 
-
-	/**
-	 * Applies the currently selected station filters to the ChatMember FilteredList.
-	 *
-	 * <p>This replaces the old predicate-property binding. The old binding worked
-	 * for normal filter changes, but it became unstable when we tried to force a
-	 * refresh by adding/removing a dummy predicate. Calling this method simply
-	 * rebuilds the combined predicate and sets it directly on the FilteredList.</p>
-	 */
-	private void applyChatMemberFilterPredicates() {
-		if (chatcontroller == null
-				|| chatcontroller.getLst_chatMemberListFiltered() == null
-				|| chatcontroller.getLst_chatMemberListFilterPredicates() == null) {
-			return;
-		}
-
-		Predicate<ChatMember> combinedPredicate =
-				chatcontroller.getLst_chatMemberListFilterPredicates()
-						.stream()
-						.reduce(chatMember -> true, Predicate::and);
-
-		chatcontroller.getLst_chatMemberListFiltered().setPredicate(combinedPredicate);
-	}
-
-
 	/**
 	 * Helper method for furtherinfoPane
 	 * @param s
@@ -1265,75 +1231,6 @@ public class Kst4ContestApplication extends Application implements StatusUpdateL
 			}
 		});
 
-		/**
-		 * Optionally highlights already worked grid squares in the QRA column.
-		 *
-		 * <p>The default table design is preserved as much as possible:
-		 * <ul>
-		 *     <li>If grid coloring is disabled, the cell uses the standard JavaFX style.</li>
-		 *     <li>If the grid is not worked yet, the cell also uses the standard style.</li>
-		 *     <li>Only already worked grids get a subtle background color.</li>
-		 *     <li>Selected rows keep the normal table selection style.</li>
-		 * </ul>
-		 *
-		 * <p>No font weight is changed here. The compact worked/grid status such as
-		 * {@code xo} is emphasized only in the worked-any column.</p>
-		 */
-		qraCol.setCellFactory(column -> new TableCell<ChatMember, String>() {
-			@Override
-			protected void updateItem(String item, boolean empty) {
-				super.updateItem(item, empty);
-
-				if (empty || item == null) {
-					setText(null);
-					setTooltip(null);
-					setStyle("");
-					return;
-				}
-
-				ChatMember member = getTableRow() == null ? null : getTableRow().getItem();
-				boolean gridWorked = member != null
-						&& chatcontroller != null
-						&& chatcontroller.isGridSquareWorkedAny(member);
-
-				String grossField = WorkedGrossFieldCache.extractGrossField(item);
-
-				setText(item);
-				setTooltip(new Tooltip(
-						"Grid status: "
-								+ (grossField == null ? "unknown" : grossField)
-								+ "\nGrid worked any: "
-								+ (gridWorked ? "yes" : "no")
-				));
-
-				/*
-				 * Important:
-				 * Do not style the cell unless the Grid color button is active AND the
-				 * grid has already been worked. This keeps normal/new grids visually
-				 * identical to the standard table design.
-				 */
-				if (!gridSquareHighlightEnabled || !gridWorked) {
-					setStyle("");
-					return;
-				}
-
-				/*
-				 * Preserve normal selection appearance. A selected row should look like a
-				 * selected row, not like a custom-colored QRA cell.
-				 */
-				if (isSelected() || (getTableRow() != null && getTableRow().isSelected())) {
-					setStyle("");
-					return;
-				}
-
-				/*
-				 * Already worked grid:
-				 * Use a subtle background derived from the current theme. No bold text.
-				 */
-				setStyle("-fx-background-color: derive(-fx-control-inner-background, -18%);");
-			}
-		});
-
 		TableColumn<ChatMember, String> qrBCol = new TableColumn<ChatMember, String>("QRB");
 		qrBCol.setCellValueFactory(new Callback<CellDataFeatures<ChatMember, String>, ObservableValue<String>>() {
 
@@ -1558,60 +1455,19 @@ public class Kst4ContestApplication extends Application implements StatusUpdateL
 
 					@Override
 					public ObservableValue<String> call(CellDataFeatures<ChatMember, String> cellDataFeatures) {
-						return new SimpleStringProperty(formatWorkedAnyGridStatus(cellDataFeatures.getValue()));
+						SimpleStringProperty wkd = new SimpleStringProperty();
+
+						if (cellDataFeatures.getValue().isWorked()) {
+							wkd.setValue("X");
+						} else {
+							wkd.setValue("");
+						}
+
+						return wkd;
 					}
 				});
 		wkdAny_subcol.prefWidthProperty().bind(tbl_chatMemberTable.widthProperty().divide(14));
 
-		/**
-		 * Shows the compact worked/grid status and explains it by tooltip.
-		 */
-		wkdAny_subcol.setCellFactory(column -> new TableCell<ChatMember, String>() {
-			@Override
-			protected void updateItem(String item, boolean empty) {
-				super.updateItem(item, empty);
-
-				if (empty) {
-					setText(null);
-					setTooltip(null);
-					setStyle("");
-					return;
-				}
-
-				ChatMember member = getTableRow() == null ? null : getTableRow().getItem();
-
-				setText(item);
-				setTooltip(new Tooltip(buildWorkedAnyGridStatusTooltip(member)));
-				setAlignment(Pos.CENTER);
-				setStyle("-fx-font-weight: bold;");
-			}
-		});
-
-		/**
-		 * Shows the compact worked/grid status and explains it by tooltip.
-		 */
-		wkdAny_subcol.setCellFactory(column -> new TableCell<ChatMember, String>() {
-			@Override
-			protected void updateItem(String item, boolean empty) {
-				super.updateItem(item, empty);
-
-				if (empty) {
-					setText(null);
-					setTooltip(null);
-					setStyle("");
-					return;
-				}
-
-				ChatMember member = getTableRow() == null ? null : getTableRow().getItem();
-
-				setText(item);
-				setTooltip(new Tooltip(buildWorkedAnyGridStatusTooltip(member)));
-				setAlignment(Pos.CENTER);
-				setStyle("-fx-font-weight: bold;");
-			}
-		});
-
-
 		TableColumn<ChatMember, String> vhfCol_subcol = new TableColumn<ChatMember, String>("144");
 		vhfCol_subcol
 				.setCellValueFactory(new Callback<CellDataFeatures<ChatMember, String>, ObservableValue<String>>() {
@@ -5602,79 +5458,29 @@ public class Kst4ContestApplication extends Application implements StatusUpdateL
 
 					ChatMessage sendMe = new ChatMessage();
 
-					/*
-					 * Resolve the selected station safely.
-					 *
-					 * Normal case:
-					 * - selectedCallSignInfoStageChatMember is set by clicking/selecting a station.
-					 *
-					 * Fallbacks:
-					 * - current table selection
-					 * - ScoreService selected member
-					 *
-					 * If no station is selected at all, the message is sent to the main category.
+					/**
+					 * testing bugfix
 					 */
-					ChatMember effectiveSelectedMember = selectedCallSignInfoStageChatMember;
 
-					if (effectiveSelectedMember == null
-							&& tbl_chatMember != null
-							&& tbl_chatMember.getSelectionModel() != null) {
-						effectiveSelectedMember = tbl_chatMember.getSelectionModel().getSelectedItem();
-					}
+					ChatCategory sendMeInThisCat;
+					String categoryNumber = selectedCallSignInfoStageChatMember.getChatCategory().getCategoryNumber() +"";
 
-					if (effectiveSelectedMember == null
-							&& chatcontroller != null
-							&& chatcontroller.getScoreService() != null) {
-						effectiveSelectedMember = chatcontroller.getScoreService().getSelectedChatMember();
-					}
+					if (categoryNumber.equals(chatcontroller.getChatCategoryMain().getCategoryNumber() + "")) {
+						sendMeInThisCat = chatcontroller.getChatCategoryMain();
 
-					/*
-					 * Default decision:
-					 * If no station is selected, use the main category.
-					 */
-					ChatCategory sendMeInThisCat = chatcontroller.getChatCategoryMain();
+					} else if (categoryNumber.equals(chatcontroller.getChatCategorySecondChat().getCategoryNumber() + "")) {
+						sendMeInThisCat = chatcontroller.getChatCategorySecondChat();
 
-					/*
-					 * If a station is selected and its category matches one of our active chat
-					 * categories, send in that category. This keeps the old behaviour, but avoids
-					 * NullPointerExceptions when no station has been selected yet.
-					 */
-					if (effectiveSelectedMember != null && effectiveSelectedMember.getChatCategory() != null) {
-
-						String categoryNumber = effectiveSelectedMember.getChatCategory().getCategoryNumber() + "";
-
-						if (chatcontroller.getChatCategoryMain() != null
-								&& categoryNumber.equals(chatcontroller.getChatCategoryMain().getCategoryNumber() + "")) {
-
-							sendMeInThisCat = chatcontroller.getChatCategoryMain();
-
-						} else if (chatcontroller.getChatCategorySecondChat() != null
-								&& categoryNumber.equals(chatcontroller.getChatCategorySecondChat().getCategoryNumber() + "")) {
-
-							sendMeInThisCat = chatcontroller.getChatCategorySecondChat();
-
-						} else {
-							sendMeInThisCat = chatcontroller.getChatCategoryMain(); // Chatcategory default decision
-						}
-					}
-
-					String selectedMemberDebugText;
-					if (effectiveSelectedMember == null) {
-						selectedMemberDebugText = "none, using main category";
 					} else {
-						selectedMemberDebugText = effectiveSelectedMember.getCallSignRaw()
-								+ " / "
-								+ effectiveSelectedMember.getChatCategory();
+						sendMeInThisCat = chatcontroller.getChatCategoryMain(); //Chatcategory default decision
 					}
 
-					System.out.println("<<<<<<<<<<<<<<<<<<<<< detected Category for sending message is "
-							+ sendMeInThisCat
-							+ " // selected member: "
-							+ selectedMemberDebugText
-							+ " evt "
-							+ event.isConsumed());
+					System.out.println("<<<<<<<<<<<<<<<<<<<<< detected Category for sending message is " + sendMeInThisCat + " // selected member: " + selectedCallSignInfoStageChatMember.getChatCategory() + " evt " + event.isConsumed() );
+					/**
+					 * end testing bugfix
+					 */
 
-					sendMe.setChatCategory(sendMeInThisCat); // new in 1.26, answer in channel of the selected member if available
+					sendMe.setChatCategory(sendMeInThisCat); //new in 1.26, answer in channel of the selected member
 					sendMe.setMessageText(txt_chatMessageUserInput.getText());
 
 					// If operator sends "/cq CALL ..." => arm pending ping metrics for reply-time / no-reply tracking
@@ -5683,9 +5489,11 @@ public class Kst4ContestApplication extends Application implements StatusUpdateL
 
 					sendMe.setMessageDirectedToServer(false);
 
-					chatcontroller.getMessageTXBus().add(sendMe); // move the message to the tx queue
+					chatcontroller.getMessageTXBus().add(sendMe); //move the message to the tx queue
 
 					txt_chatMessageUserInput.clear();
+
+
 				}
 			});
 
@@ -6283,14 +6091,13 @@ public class Kst4ContestApplication extends Application implements StatusUpdateL
 			chatMemberTableFilterMaxQrbTF.setFocusTraversable(false);
 
 
-			ToggleButton btnTglNewLocator = new ToggleButton("Only new grids");
+			ToggleButton btnTglNewLocator = new ToggleButton("New locator");
 			Predicate<ChatMember> newLocatorPredicate = new Predicate<ChatMember>() {
 				@Override
 				public boolean test(ChatMember chatMember) {
-					return chatcontroller.isNewGridSquare(chatMember);
+					return chatcontroller.isNewLocatorOnAnyEnabledBand(chatMember);
 				}
 			};
-
 			btnTglNewLocator.setOnAction(new EventHandler<ActionEvent>() {
 				@Override
 				public void handle(ActionEvent actionEvent) {
@@ -6301,26 +6108,7 @@ public class Kst4ContestApplication extends Application implements StatusUpdateL
 					}
 				}
 			});
-			btnTglNewLocator.setTooltip(new Tooltip("Show only stations whose 4-character grid square has not been worked on any band yet"));
-
-
-			ToggleButton btnTglGridColor = new ToggleButton("Grid color");
-
-			/**
-			 * Enables optional QRA-cell coloring for grid status.
-			 *
-			 * <p>This does not filter the list. It only colors the locator field:
-			 * worked grid = darker, new grid = brighter.</p>
-			 */
-			btnTglGridColor.setOnAction(new EventHandler<ActionEvent>() {
-				@Override
-				public void handle(ActionEvent actionEvent) {
-					gridSquareHighlightEnabled = btnTglGridColor.isSelected();
-					tbl_chatMember.refresh();
-				}
-			});
-
-			btnTglGridColor.setTooltip(new Tooltip("Color the QRA field by grid status without filtering the station list"));
+			btnTglNewLocator.setTooltip(new Tooltip("Show only stations whose gross locator is still new on at least one active own band"));
 
 			ToggleButton btnTglReachableTropo = new ToggleButton("Tropo >=0dB");
 			Predicate<ChatMember> reachableTropoPredicate = new Predicate<ChatMember>() {
@@ -6603,13 +6391,8 @@ public class Kst4ContestApplication extends Application implements StatusUpdateL
 					"-fx-border-color: lightgrey;");
 
 
-//			chatcontroller.getLst_chatMemberListFiltered().predicateProperty().bind(Bindings.createObjectBinding(() -> chatcontroller.getLst_chatMemberListFilterPredicates().stream().reduce(x -> true, Predicate::and), chatcontroller.getLst_chatMemberListFilterPredicates()));
+			chatcontroller.getLst_chatMemberListFiltered().predicateProperty().bind(Bindings.createObjectBinding(() -> chatcontroller.getLst_chatMemberListFilterPredicates().stream().reduce(x -> true, Predicate::and), chatcontroller.getLst_chatMemberListFilterPredicates()));
 
-			applyChatMemberFilterPredicates();
-
-			chatcontroller.getLst_chatMemberListFilterPredicates().addListener(
-					(ListChangeListener<Predicate<ChatMember>>) change -> applyChatMemberFilterPredicates()
-			);
 
 			TextField chatMemberTableFilterTextField = new TextField("Find...");
 			chatMemberTableFilterTextField.setFocusTraversable(false);
@@ -6651,9 +6434,7 @@ public class Kst4ContestApplication extends Application implements StatusUpdateL
 						chatcontroller.getLst_chatMemberListFilterPredicates().remove(searchTextPredicate);
 					}
 					else {
-						if (!chatcontroller.getLst_chatMemberListFilterPredicates().contains(searchTextPredicate)) {
-							chatcontroller.getLst_chatMemberListFilterPredicates().add(searchTextPredicate);
-						}
+						chatcontroller.getLst_chatMemberListFilterPredicates().add(searchTextPredicate);
 					}
 
 					System.out.println("KST4CApp " + chatMemberTableFilterTextField.textProperty().getValue().equals("") + " / " + !chatMemberTableFilterTextField.focusedProperty().getValue());
@@ -6663,33 +6444,6 @@ public class Kst4ContestApplication extends Application implements StatusUpdateL
 			HBox chatMemberTableFilterWorkedBandFiltersHbx = new HBox();
 
 
-			Button btnCalculateSelectedTropo = new Button("Calc selected");
-
-			/**
-			 * Calculates full terrain/path reachability only for the currently selected
-			 * station. This is intentionally operator-triggered to avoid API-limit problems.
-			 */
-			btnCalculateSelectedTropo.setOnAction(new EventHandler<ActionEvent>() {
-				@Override
-				public void handle(ActionEvent event) {
-					ChatMember selectedMember = tbl_chatMember.getSelectionModel().getSelectedItem();
-
-					if (selectedMember == null && chatcontroller.getScoreService() != null) {
-						selectedMember = chatcontroller.getScoreService().getSelectedChatMember();
-					}
-
-					if (selectedMember == null) {
-						return;
-					}
-
-					Band selectedBand = resolveReachabilityBandForUi(selectedMember);
-					chatcontroller.getReachabilityService().calculateSelectedStationOnDemand(selectedMember, selectedBand);
-				}
-			});
-
-			btnCalculateSelectedTropo.setTooltip(new Tooltip("Calculate full Tropo/path analysis for the selected station only"));
-
-
 			ComboBox<String> cmbReachabilityBand = new ComboBox<>();
 			cmbReachabilityBand.getItems().add("Auto");
 			for (Band band : chatcontroller.getReachabilityService().getEnabledStationBands()) {
@@ -6701,26 +6455,16 @@ public class Kst4ContestApplication extends Application implements StatusUpdateL
 				@Override
 				public void handle(ActionEvent event) {
 					selectedReachabilityBandOverride = parseReachabilityBandSelection(cmbReachabilityBand.getValue());
-
-					// Changing the display band must not start batch terrain analysis.
-					// Existing cached values are shown; new values are calculated on map click
-					// or via the explicit "Calc selected" button.
+					for (ChatMember member : chatcontroller.getLst_chatMemberList()) {
+						Band bandToCalculate = resolveReachabilityBandForUi(member);
+						chatcontroller.getReachabilityService().ensureTropoMarginCalculated(member, bandToCalculate);
+					}
 					chatcontroller.fireUserListUpdate("Reachability band changed");
 				}
 			});
 
 			chatMemberTableFilterWorkedBandFiltersHbx.getChildren().add(new Label("Reachability:"));
 			chatMemberTableFilterWorkedBandFiltersHbx.getChildren().add(cmbReachabilityBand);
-			chatMemberTableFilterWorkedBandFiltersHbx.getChildren().add(btnCalculateSelectedTropo);
-
-			/**
-			 * In order to work the filters needs the proper band settings, which should be worked
-			 */
-			if (chatcontroller.getReachabilityService().getEnabledStationBands().isEmpty()) {
-				Label bandSetupWarning = new Label("Please enable at least one active station band for New Locator/New Band filters.");
-				bandSetupWarning.setStyle("-fx-text-fill: orange; -fx-font-weight: bold;");
-				chatMemberTableFilterWorkedBandFiltersHbx.getChildren().add(bandSetupWarning);
-			}
 
 			ToggleButton btnTglwkd = new ToggleButton("wkd");
 
@@ -6990,7 +6734,6 @@ public class Kst4ContestApplication extends Application implements StatusUpdateL
 
 			chatMemberTableFilterWorkedBandFiltersHbx.getChildren().addAll(
 					btnTglNewLocator,
-					btnTglGridColor,
 					btnTglReachableTropo,
 					btnTglNewBands,
 					btnTglAsNext5Min
@@ -9610,75 +9353,6 @@ public class Kst4ContestApplication extends Application implements StatusUpdateL
 		return sb.toString();
 	}
 
-
-	/**
-	 * Formats the global worked/grid status for the worked-any column.
-	 *
-	 * <p>Status characters follow the user feedback:
-	 * <ul>
-	 *     <li>empty = call not worked, grid not worked</li>
-	 *     <li>x = call worked</li>
-	 *     <li>o = grid worked, call not worked</li>
-	 *     <li>xo = call and grid worked</li>
-	 * </ul>
-	 *
-	 * <p>The call status is based on {@link ChatMember#isWorked()}, i.e. worked-any.
-	 * The grid status is based on the four-character grid square worked on any band.</p>
-	 *
-	 * @param member station row
-	 * @return compact status text
-	 */
-	private String formatWorkedAnyGridStatus(ChatMember member) {
-		if (member == null) {
-			return "";
-		}
-
-		boolean callWorked = member.isWorked();
-		boolean gridWorked = chatcontroller != null && chatcontroller.isGridSquareWorkedAny(member);
-
-		if (callWorked && gridWorked) {
-			return "xo";
-		}
-
-		if (callWorked) {
-			return "x";
-		}
-
-		if (gridWorked) {
-			return "o";
-		}
-
-		return "";
-	}
-
-	/**
-	 * Builds a tooltip for the worked-any/grid-status cell.
-	 *
-	 * @param member station row
-	 * @return tooltip text
-	 */
-	private String buildWorkedAnyGridStatusTooltip(ChatMember member) {
-		if (member == null) {
-			return "empty = call not worked, grid not worked\n"
-					+ "x = call worked\n"
-					+ "o = grid worked\n"
-					+ "xo = call and grid worked";
-		}
-
-		String grossField = WorkedGrossFieldCache.extractGrossField(member.getQra());
-		String gridText = grossField == null ? "unknown grid" : "grid " + grossField;
-
-		return "Worked status:\n"
-				+ "empty = call not worked, grid not worked\n"
-				+ "x = call worked\n"
-				+ "o = grid worked\n"
-				+ "xo = call and grid worked\n\n"
-				+ "This station:\n"
-				+ "Call worked: " + (member.isWorked() ? "yes" : "no") + "\n"
-				+ "Grid worked: " + (chatcontroller != null && chatcontroller.isGridSquareWorkedAny(member) ? "yes" : "no")
-				+ " (" + gridText + ")";
-	}
-
 //	/**
 //	 *
 //	 * resets the style of the not selected direction buttons
@@ -9825,43 +9499,16 @@ public class Kst4ContestApplication extends Application implements StatusUpdateL
 
     }
 
+    @Override
+    public void onUserListUpdated(String reason) {
+        Platform.runLater(() -> {
 
-	/**
-	 * Forces the station FilteredList to evaluate all active predicates again.
-	 *
-	 * <p>Several filters depend on mutable ChatMember fields, for example worked
-	 * flags, AirScout windows or calculated Tropo values. Updating such fields does
-	 * not necessarily create a JavaFX list-change event. Therefore we explicitly
-	 * re-apply the combined predicate instead of adding/removing a dummy predicate.
-	 * The dummy-predicate trick can corrupt SortedList mapping in JavaFX.</p>
-	 */
-	private void forceChatMemberFilterRefresh() {
-		applyChatMemberFilterPredicates();
-	}
+//            tbl_chatMember.sort();
+            tbl_chatMember.refresh();
 
-	@Override
-	public void onUserListUpdated(String reason) {
-		Platform.runLater(() -> {
-			pendingUserListUpdateReason = reason;
-
-			if (userListRefreshCoalescer == null) {
-				userListRefreshCoalescer = new PauseTransition(Duration.millis(300));
-				userListRefreshCoalescer.setOnFinished(event -> {
-					forceChatMemberFilterRefresh();
-
-					if (tbl_chatMember != null) {
-						tbl_chatMember.refresh();
-					}
-
-					refreshStationMapIfVisible();
-
-					System.out.println("KST4Capp, UI Update Trigger: " + pendingUserListUpdateReason);
-				});
-			}
-
-			userListRefreshCoalescer.playFromStart();
-		});
-	}
+            System.out.println("KST4Capp, UI Update Trigger: " + reason);
+        });
+    }
 
 
 //	public class MaidenheadLocatorMapPane extends Pane {
@@ -9959,72 +9606,6 @@ public class Kst4ContestApplication extends Application implements StatusUpdateL
 //	}
 
 
-	/**
-	 * Returns the best currently selected ChatMember for actions that depend on a
-	 * selected station.
-	 *
-	 * <p>The normal source is selectedCallSignInfoStageChatMember. As a fallback,
-	 * the current table selection and the ScoreService selection are checked. If
-	 * nothing is selected yet, null is returned. This is valid and must be handled
-	 * by the caller.</p>
-	 *
-	 * @return selected ChatMember or null if no station is selected
-	 */
-	private ChatMember getEffectiveSelectedChatMember() {
-		if (selectedCallSignInfoStageChatMember != null) {
-			return selectedCallSignInfoStageChatMember;
-		}
-
-		if (tbl_chatMember != null
-				&& tbl_chatMember.getSelectionModel() != null
-				&& tbl_chatMember.getSelectionModel().getSelectedItem() != null) {
-			return tbl_chatMember.getSelectionModel().getSelectedItem();
-		}
-
-		if (chatcontroller != null
-				&& chatcontroller.getScoreService() != null
-				&& chatcontroller.getScoreService().getSelectedChatMember() != null) {
-			return chatcontroller.getScoreService().getSelectedChatMember();
-		}
-
-		return null;
-	}
-
-	/**
-	 * Resolves the chat category for an outgoing operator message.
-	 *
-	 * <p>If a station is selected, the message is sent in the category of that
-	 * station. If no station is selected yet, the message is sent in the main chat
-	 * category. This prevents NullPointerExceptions when the operator writes to the
-	 * chat immediately after joining.</p>
-	 *
-	 * @param selectedMember selected station, may be null
-	 * @return category for the outgoing message, normally main or second category
-	 */
-	private ChatCategory resolveOutgoingChatCategory(ChatMember selectedMember) {
-		ChatCategory mainCategory = chatcontroller.getChatCategoryMain();
-		ChatCategory secondCategory = chatcontroller.getChatCategorySecondChat();
-
-		if (selectedMember == null || selectedMember.getChatCategory() == null) {
-			return mainCategory;
-		}
-
-		String categoryNumber = selectedMember.getChatCategory().getCategoryNumber() + "";
-
-		if (mainCategory != null
-				&& categoryNumber.equals(mainCategory.getCategoryNumber() + "")) {
-			return mainCategory;
-		}
-
-		if (secondCategory != null
-				&& categoryNumber.equals(secondCategory.getCategoryNumber() + "")) {
-			return secondCategory;
-		}
-
-		return mainCategory;
-	}
-
-
 	/**
 	 * helper method, in cases of QRG ending qith 0 as double values, it will fill the ending 0 to the qrg string
 	 * @param raw

src/main/java/kst4contest/view/map/MapHtmlResources.java

@@ -214,11 +214,6 @@ public final class MapHtmlResources {
                 <body class="kst-theme-light">
                 <div id="map"></div>
 
-                <script>
-                    // JavaFX 21 WebView can render Leaflet's CSS translate3d tile positioning incorrectly.
-                    // Disable Leaflet 3D transforms before leaflet.js is loaded to keep tile rendering stable.
-                    window.L_DISABLE_3D = true;
-                </script>
                 <script>
                 """ + leafletJs + """
                 </script>
@@ -371,31 +366,18 @@ public final class MapHtmlResources {
                             applyThemeClass();
 
                             map = L.map('map', {
-                                zoomControl: true,
-                                zoomAnimation: false,
-                                fadeAnimation: false,
-                                markerZoomAnimation: false,
-                                inertia: false
+                                zoomControl: true
                             }).setView([51.0, 10.0], 6);
 
                             jsLog('Leaflet map initialized');
 
-                            const tileLayer = L.tileLayer(
+                            L.tileLayer(
                                 'http://127.0.0.1:' + window._kstTileProxyPort + '/tiles/{s}/{z}/{x}/{y}.png',
                                 {
                                     maxZoom: 18,
-                                    updateWhenZooming: false,
-                                    keepBuffer: 4,
                                     attribution: '&copy; <a href="https://www.openstreetmap.org/copyright">OpenStreetMap</a>'
                                 }
-                            );
-
-                            tileLayer.on('tileerror', function (event) {
-                                const source = event && event.tile ? event.tile.src : 'unknown';
-                                jsError('OSM tile load failed: ' + source);
-                            });
-
-                            tileLayer.addTo(map);
+                            ).addTo(map);
 
                             map.createPane('beamPane');
                             map.getPane('beamPane').style.zIndex = 410;
@@ -434,47 +416,22 @@ public final class MapHtmlResources {
                         }
 
                         function invalidateSize() {
-                            if (!map) {
-                                return;
-                            }
-
-                            const mapElement = document.getElementById('map');
-                            const domWidth = mapElement ? mapElement.clientWidth : -1;
-                            const domHeight = mapElement ? mapElement.clientHeight : -1;
-
-                            jsLog('invalidateSize dom=' + domWidth + 'x' + domHeight
-                                    + ' leafletBefore=' + map.getSize().x + 'x' + map.getSize().y);
-
-                            window.requestAnimationFrame(function () {
-                                map.invalidateSize({
-                                    animate: false,
-                                    pan: false,
-                                    debounceMoveend: true
-                                });
-
-                                window.setTimeout(function () {
-                                    map.invalidateSize({
-                                        animate: false,
-                                        pan: false,
-                                        debounceMoveend: true
-                                    });
-
-                                    jsLog('invalidateSize leafletAfter=' + map.getSize().x + 'x' + map.getSize().y);
-
-                                    if (invalidateNotifyTimer) {
-                                        window.clearTimeout(invalidateNotifyTimer);
-                                    }
-
-                                    invalidateNotifyTimer = window.setTimeout(function () {
-                                        notifyViewport();
-                                    }, 120);
-                                }, 80);
-                            });
-                        }
-
-                        function resize() {
-                            invalidateSize();
-                        }
+                             if (!map) {
+                                 return;
+                             }
+                
+                             jsLog('invalidateSize');
+                
+                             map.invalidateSize(false);
+                
+                             if (invalidateNotifyTimer) {
+                                 window.clearTimeout(invalidateNotifyTimer);
+                             }
+                
+                             invalidateNotifyTimer = window.setTimeout(function () {
+                                 notifyViewport();
+                             }, 120);
+                         }
 
                         function zoomIn() {
                             if (!map) {
@@ -736,7 +693,6 @@ public final class MapHtmlResources {
                         return {
                               init: init,
                               invalidateSize: invalidateSize,
-                              resize: resize,
                               zoomIn: zoomIn,
                               zoomOut: zoomOut,
                               inspectPoint: inspectPoint,

src/main/java/kst4contest/view/map/StationMapBridge.java

@@ -6,6 +6,7 @@ import javafx.collections.ListChangeListener;
 import javafx.scene.control.TableView;
 import javafx.util.Duration;
 import kst4contest.controller.ChatController;
+import kst4contest.locatorUtils.Location;
 import kst4contest.model.ChatMember;
 import kst4contest.model.ChatPreferences;
 
@@ -14,13 +15,12 @@ import java.util.Comparator;
 import java.util.List;
 import java.util.Locale;
 import java.util.Objects;
-
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Executors;
+import java.util.concurrent.ThreadFactory;
 import java.util.concurrent.atomic.AtomicLong;
 import java.util.function.Consumer;
 
-import kst4contest.model.Band;
-import java.util.function.Predicate;
-
 /**
  * Synchronizes the application state with the station map window.
  *
@@ -32,7 +32,7 @@ import java.util.function.Predicate;
  */
 public final class StationMapBridge {
 
-
+    private final ExecutorService pathAnalysisExecutor = Executors.newSingleThreadExecutor(new PathAnalysisThreadFactory());
     private final AtomicLong pathAnalysisGeneration = new AtomicLong(0);
 
     private final ChatController chatController;
@@ -45,7 +45,8 @@ public final class StationMapBridge {
 
 
     private final MapCallsignRawSnapshotBuilder snapshotBuilder = new MapCallsignRawSnapshotBuilder();
-
+//    private final OfflineDemManager offlineDemManager = new OfflineDemManager();
+    private final PathAnalysisService pathAnalysisService;
 
     private String lastPathAnalysisRequestSignature = "";
 
@@ -63,7 +64,9 @@ public final class StationMapBridge {
 
         this.refreshCoalescer.setOnFinished(event -> refreshNow());
 
-
+        this.pathAnalysisService = new GeometryOnlyPathAnalysisService(
+                new OpenMeteoTerrainProfileProvider()
+        );
     }
 
     public void install() {
@@ -82,10 +85,6 @@ public final class StationMapBridge {
                 (obs, oldValue, newValue) -> scheduleRefresh()
         );
 
-        chatController.getLst_chatMemberListFilterPredicates().addListener(
-                (ListChangeListener<Predicate<ChatMember>>) change -> requestImmediateRefresh()
-        );
-
         requestImmediateRefresh();
     }
 
@@ -171,17 +170,6 @@ public final class StationMapBridge {
         requestPathAnalysisAsync(preferences.getStn_loginLocatorMainCat(), selectedSnapshot);
     }
 
-    /**
-     * Requests the selected station path analysis through the central reachability
-     * service.
-     *
-     * <p>The map no longer owns a separate PathAnalysisService. This ensures that
-     * the map detail panel, the Tropo table column and the station filters all use
-     * exactly the same path/link-budget calculation.</p>
-     *
-     * @param ownLocator6 own locator from preferences
-     * @param selectedSnapshot selected map marker snapshot
-     */
     private void requestPathAnalysisAsync(String ownLocator6, MapCallsignRawSnapshot selectedSnapshot) {
         String normalizedOwnLocator6 = normalizeLocator6(ownLocator6);
 
@@ -214,28 +202,20 @@ public final class StationMapBridge {
                 PathAnalysisResult.loading(normalizedOwnLocator6, normalizedTargetLocator6, targetCallsignRaw)
         );
 
-        ChatMember selectedMember = resolveBestChatMember(targetCallsignRaw);
+        pathAnalysisExecutor.submit(() -> {
+            PathAnalysisResult result = buildPathAnalysisResult(normalizedOwnLocator6, selectedSnapshot);
 
-        chatController.getReachabilityService().requestPathAnalysisForMap(
-                selectedMember,
-                selectedSnapshot,
-                result -> {
-                    if (generation != pathAnalysisGeneration.get()) {
-                        return;
-                    }
-                    stationMapView.setPathAnalysisResult(result);
+            Platform.runLater(() -> {
+                if (generation != pathAnalysisGeneration.get()) {
+                    return;
                 }
-        );
+                stationMapView.setPathAnalysisResult(result);
+            });
+        });
     }
 
-    /**
-     * Invalidates pending map callbacks.
-     *
-     * <p>The actual calculation executor is owned by ReachabilityService now, so
-     * this bridge no longer shuts down any path-analysis thread directly.</p>
-     */
     public void dispose() {
-        pathAnalysisGeneration.incrementAndGet();
+        pathAnalysisExecutor.shutdownNow();
     }
 
     private void handleMapCallsignSelection(String callSignRaw) {
@@ -306,6 +286,43 @@ public final class StationMapBridge {
         return callSignRaw.trim().toUpperCase(Locale.ROOT);
     }
 
+    private PathAnalysisResult buildPathAnalysisResult(String ownLocator6, MapCallsignRawSnapshot selectedSnapshot) {
+        String normalizedOwnLocator6 = normalizeLocator6(ownLocator6);
+
+        if (selectedSnapshot == null) {
+            return PathAnalysisResult.waitingForSelection(normalizedOwnLocator6);
+        }
+
+        String normalizedTargetLocator6 = normalizeLocator6(selectedSnapshot.locator6());
+
+        if (normalizedOwnLocator6.length() != 6) {
+            return PathAnalysisResult.waitingForValidHomeLocator(normalizedOwnLocator6, normalizedTargetLocator6);
+        }
+
+        if (!selectedSnapshot.hasUsablePosition()) {
+            return PathAnalysisResult.waitingForValidTarget(normalizedOwnLocator6, normalizedTargetLocator6);
+        }
+
+        Location homeLocation = new Location(normalizedOwnLocator6);
+        double analysisFrequencyMHz = resolveAnalysisFrequencyMHz(selectedSnapshot);
+
+        PathAnalysisRequest request = new PathAnalysisRequest(
+                normalizedOwnLocator6,
+                homeLocation.getLatitude().toDegrees(),
+                homeLocation.getLongitude().toDegrees(),
+                selectedSnapshot.callSignRaw(),
+                normalizedTargetLocator6,
+                selectedSnapshot.latitudeDeg(),
+                selectedSnapshot.longitudeDeg(),
+                analysisFrequencyMHz,
+                chatController.getChatPreferences().getStn_pathAnalysisOwnAntennaHeightMeters(),
+                chatController.getChatPreferences().getStn_pathAnalysisDefaultTargetAntennaHeightMeters(),
+                PathGeometryUtils.DEFAULT_EFFECTIVE_EARTH_RADIUS_FACTOR,
+                chatController.getChatPreferences().buildPathLinkBudgetSettings()
+        );
+
+        return pathAnalysisService.analyze(request);
+    }
 
     private double resolveAnalysisFrequencyMHz(MapCallsignRawSnapshot selectedSnapshot) {
         if (selectedSnapshot == null) {
@@ -359,5 +376,12 @@ public final class StationMapBridge {
         return locator.trim().toUpperCase(Locale.ROOT);
     }
 
-
+    private static final class PathAnalysisThreadFactory implements ThreadFactory {
+        @Override
+        public Thread newThread(Runnable runnable) {
+            Thread thread = new Thread(runnable, "station-map-path-analysis");
+            thread.setDaemon(true);
+            return thread;
+        }
+    }
 }

src/main/java/kst4contest/view/map/StationMapView.java

@@ -49,17 +49,6 @@ public final class StationMapView {
     private final Stage stage = new Stage();
     private final WebView webView = new WebView();
     private final WebEngine webEngine = webView.getEngine();
-
-    /**
-     * Keep a strong Java reference to the bridge object.
-     *
-     * JavaFX WebView/JSObject does not guarantee that a Java object passed through
-     * window.setMember(...) remains strongly reachable from the Java side. Newer
-     * JavaFX/WebKit/GC combinations can otherwise lose callbacks after a while.
-     */
-    private final JavaMapBridge javaMapBridge = new JavaMapBridge();
-
-
     private TileProxyServer tileProxyServer;
 
     private Scene scene;
@@ -96,22 +85,6 @@ public final class StationMapView {
     private List<MapCallsignRawSnapshot> lastSnapshots = List.of();
     private MapCallsignRawSnapshot lastSelectedSnapshot;
     private boolean filteredViewActive;
-    /**
-     * Last JSON payloads sent into Leaflet. Used to avoid clearing/recreating
-     * layers every score/table refresh. Rebuilding DOM markers every few seconds
-     * is visible as flicker in JavaFX 21 WebView.
-     */
-    private String lastRenderedStationsJson = "";
-    private String lastRenderedBeamJson = "";
-    private String lastRenderedConnectionJson = "";
-    private String lastRenderedGridJson = "";
-
-    /**
-     * Prevent periodic refreshes from panning the map back to the selected station.
-     * Explicit calls to focusCallsignRaw(...) still pan immediately.
-     */
-    private String lastAutoFocusedCallsignRaw = "";
-
 
     private double homeLatitudeDeg = Double.NaN;
     private double homeLongitudeDeg = Double.NaN;
@@ -219,11 +192,8 @@ public final class StationMapView {
             return;
         }
 
-        String normalizedCallsignRaw = callSignRaw.trim().toUpperCase(Locale.ROOT);
-        lastAutoFocusedCallsignRaw = normalizedCallsignRaw;
-
         executeMapScriptSafely(
-                "window.kstMapApi.focusCallsignRaw(" + toJsStringLiteral(normalizedCallsignRaw) + ");"
+                "window.kstMapApi.focusCallsignRaw(" + toJsStringLiteral(callSignRaw.trim().toUpperCase(Locale.ROOT)) + ");"
         );
     }
 
@@ -322,8 +292,6 @@ public final class StationMapView {
         webView.setMinWidth(0);
         webView.setMinHeight(220);
         webView.setPrefHeight(420);
-        webView.setMaxWidth(Double.MAX_VALUE);
-        webView.setMaxHeight(Double.MAX_VALUE);
         VBox.setVgrow(webView, Priority.ALWAYS);
 
         profileSection.setMinWidth(0);
@@ -655,7 +623,7 @@ public final class StationMapView {
         webEngine.getLoadWorker().stateProperty().addListener((obs, oldState, newState) -> {
             if (newState == javafx.concurrent.Worker.State.SUCCEEDED) {
                 JSObject window = (JSObject) webEngine.executeScript("window");
-                window.setMember("javaMapBridge", javaMapBridge);
+                window.setMember("javaMapBridge", new JavaMapBridge());
 
                 executeMapScriptSafely("window.kstMapApi.init();");
 
@@ -675,13 +643,11 @@ public final class StationMapView {
             return;
         }
 
-        Platform.runLater(() -> Platform.runLater(() ->
-                executeMapScriptSafely("window.kstMapApi.resize();")
-        ));
+        Platform.runLater(() ->
+                Platform.runLater(() ->
+                        executeMapScriptSafely("window.kstMapApi.invalidateSize();")));
     }
 
-
-
     private void handleWebViewClick(MouseEvent event) {
         logWebViewMouseEvent("MOUSE_CLICKED", event);
 
@@ -944,6 +910,9 @@ public final class StationMapView {
         detailPathProfileChart.setObstructionSummary(result.obstructionSummary());
     }
 
+
+
+
     private void renderAll() {
         if (!mapReady) {
             return;
@@ -961,78 +930,49 @@ public final class StationMapView {
         renderBeam();
         renderConnectionLine();
         renderGridIfViewportKnown();
-        focusSelectedStationOnlyWhenSelectionChanged();
-    }
 
-    private void focusSelectedStationOnlyWhenSelectionChanged() {
-        if (lastSelectedSnapshot == null || lastSelectedSnapshot.callSignRaw() == null) {
-            lastAutoFocusedCallsignRaw = "";
-            return;
+        if (lastSelectedSnapshot != null) {
+            focusCallsignRaw(lastSelectedSnapshot.callSignRaw());
         }
-
-        String selectedCallsignRaw = lastSelectedSnapshot.callSignRaw().trim().toUpperCase(Locale.ROOT);
-        if (selectedCallsignRaw.isBlank() || selectedCallsignRaw.equals(lastAutoFocusedCallsignRaw)) {
-            return;
-        }
-
-        focusCallsignRaw(selectedCallsignRaw);
     }
 
     private void renderStations() {
-        String stationsJson = toStationsJson(lastSnapshots);
-        if (stationsJson.equals(lastRenderedStationsJson)) {
-            return;
-        }
-
-        lastRenderedStationsJson = stationsJson;
-
         executeMapScriptSafely(
-                "window.kstMapApi.setStations(" + toJsStringLiteral(stationsJson) + ");"
+                "window.kstMapApi.setStations(" + toJsStringLiteral(toStationsJson(lastSnapshots)) + ");"
         );
     }
 
     private void renderBeam() {
-        String beamJson = "null";
+        if (!Double.isFinite(homeLatitudeDeg)
+                || !Double.isFinite(homeLongitudeDeg)
+                || beamWidthDeg <= 0.0
+                || maxQrbKm <= 0.0) {
 
-        if (Double.isFinite(homeLatitudeDeg)
-                && Double.isFinite(homeLongitudeDeg)
-                && beamWidthDeg > 0.0
-                && maxQrbKm > 0.0) {
-
-            List<double[]> sectorPoints = buildBeamPolygon(homeLatitudeDeg, homeLongitudeDeg, antennaAzimuthDeg, beamWidthDeg, maxQrbKm);
-            beamJson = toPointArrayJson(sectorPoints);
-        }
-
-        if (beamJson.equals(lastRenderedBeamJson)) {
+            executeMapScriptSafely("window.kstMapApi.setBeam('null');");
             return;
         }
-        lastRenderedBeamJson = beamJson;
 
+        List<double[]> sectorPoints = buildBeamPolygon(homeLatitudeDeg, homeLongitudeDeg, antennaAzimuthDeg, beamWidthDeg, maxQrbKm);
         executeMapScriptSafely(
-                "window.kstMapApi.setBeam(" + toJsStringLiteral(beamJson) + ");"
+                "window.kstMapApi.setBeam(" + toJsStringLiteral(toPointArrayJson(sectorPoints)) + ");"
         );
     }
 
     private void renderConnectionLine() {
-        String connectionJson = "null";
+        if (lastSelectedSnapshot == null || !lastSelectedSnapshot.hasUsablePosition()
+                || !Double.isFinite(homeLatitudeDeg) || !Double.isFinite(homeLongitudeDeg)) {
 
-        if (lastSelectedSnapshot != null && lastSelectedSnapshot.hasUsablePosition()
-                && Double.isFinite(homeLatitudeDeg) && Double.isFinite(homeLongitudeDeg)) {
-
-            List<double[]> points = List.of(
-                    new double[]{homeLatitudeDeg, homeLongitudeDeg},
-                    new double[]{lastSelectedSnapshot.latitudeDeg(), lastSelectedSnapshot.longitudeDeg()}
-            );
-            connectionJson = toPointArrayJson(points);
-        }
-
-        if (connectionJson.equals(lastRenderedConnectionJson)) {
+            executeMapScriptSafely("window.kstMapApi.setConnection('null');");
             return;
         }
-        lastRenderedConnectionJson = connectionJson;
+
+        List<double[]> points = List.of(
+                new double[]{homeLatitudeDeg, homeLongitudeDeg},
+                new double[]{lastSelectedSnapshot.latitudeDeg(), lastSelectedSnapshot.longitudeDeg()}
+        );
 
         executeMapScriptSafely(
-                "window.kstMapApi.setConnection(" + toJsStringLiteral(connectionJson) + ");"
+                "window.kstMapApi.setConnection(" + toJsStringLiteral(toPointArrayJson(points)) + ");"
         );
     }
 
@@ -1071,19 +1011,11 @@ public final class StationMapView {
                 + " cellPx=" + String.format(Locale.US, "%.1f/%.1f", renderPlan.estimatedCellWidthPx(), renderPlan.estimatedCellHeightPx())
                 + " cells=" + visibleGridCells.size());
 
-        String gridJson = toGridJson(visibleGridCells, renderPlan);
-        if (gridJson.equals(lastRenderedGridJson)) {
-            return;
-        }
-        lastRenderedGridJson = gridJson;
-
         executeMapScriptSafely(
-                "window.kstMapApi.setGrid(" + toJsStringLiteral(gridJson) + ");"
+                "window.kstMapApi.setGrid(" + toJsStringLiteral(toGridJson(visibleGridCells, renderPlan)) + ");"
         );
     }
 
-
-
     private List<double[]> buildBeamPolygon(double startLatDeg,
                                             double startLonDeg,
                                             double centerAzimuthDeg,

src/main/java/kst4contest/view/map/TileProxyServer.java

@@ -19,10 +19,8 @@ import java.util.concurrent.Executors;
  */
 final class TileProxyServer {
 
-    private static final int CACHE_MAX = 2048;
+    private static final int CACHE_MAX = 512;
     private static final String USER_AGENT = "kst4contest/1.0 amateur-radio-contest-tool";
-    private static final int TILE_PROXY_THREADS = 12;
-    private static final int TILE_PROXY_BACKLOG = 128;
 
     private final ServerSocket serverSocket;
     private final ExecutorService executor;
@@ -41,9 +39,9 @@ final class TileProxyServer {
             }
         });
 
-        this.serverSocket = new ServerSocket(0, TILE_PROXY_BACKLOG, InetAddress.getByName("127.0.0.1"));
+        this.serverSocket = new ServerSocket(0, 16, InetAddress.getByName("127.0.0.1"));
 
-        this.executor = Executors.newFixedThreadPool(TILE_PROXY_THREADS, r -> {
+        this.executor = Executors.newFixedThreadPool(4, r -> {
             Thread t = new Thread(r, "tile-proxy");
             t.setDaemon(true);
             return t;
@@ -134,7 +132,6 @@ final class TileProxyServer {
                     + "Content-Type: image/png\r\n"
                     + "Content-Length: " + tileData.length + "\r\n"
                     + "Cache-Control: max-age=86400\r\n"
-                    + "Access-Control-Allow-Origin: *\r\n"
                     + "Connection: close\r\n"
                     + "\r\n";
             out.write(header.getBytes());

src/main/java/module-info.java

@@ -6,7 +6,6 @@ module praktiKST {
 	requires java.sql;
     requires javafx.media;
     requires jdk.jsobject;
-    requires jlayer;
     requires java.net.http;
     requires java.desktop;
 	requires jdk.crypto.ec;
@@ -18,4 +17,4 @@ module praktiKST {
 
 
 	opens kst4contest.view.map to javafx.web;
-}
+}

udpReaderBackup.txt

@@ -2369,5 +2369,4 @@ OZ1HDF;Ken;JO55UN;StringProperty [value: null]; wkd true; wkd144 true; wkd432fal
 DO5SA;unknown;unknown;StringProperty [value: null]; wkd true; wkd144 true; wkd432false; wkd1240false; wkd2300false; wkd3400false; wkd5600false; wkd10Gfalse ; null
 9A2HM;unknown;unknown;StringProperty [value: null]; wkd true; wkd144 false; wkd432false; wkd1240false; wkd2300false; wkd3400false; wkd5600false; wkd10Gfalse ; null
 9A2HM;null;null;StringProperty [value: null]; wkd true; wkd144 false; wkd432true; wkd1240false; wkd2300false; wkd3400false; wkd5600false; wkd10Gfalse ; null
-9A2HM;null;null;StringProperty [value: null]; wkd true; wkd144 false; wkd432false; wkd1240false; wkd2300true; wkd3400false; wkd5600false; wkd10Gfalse ; null
-OV3T;Thomas;JO46CM;StringProperty [value: null]; wkd true; wkd144 true; wkd432false; wkd1240false; wkd2300false; wkd3400false; wkd5600false; wkd10Gfalse ; 2: 144/432 MHz
+9A2HM;null;null;StringProperty [value: null]; wkd true; wkd144 false; wkd432false; wkd1240false; wkd2300true; wkd3400false; wkd5600false; wkd10Gfalse ; null