Aircraft Scatter
AirScout Integration
Use aircraft scatter awareness directly inside your ON4KST contest workflow.
Learn more →The contest-optimized ON4KST client
KST4Contest
Work smarter. Make more QSOs. KST4Contest brings priority candidates, AirScout workflow, sked reminders, dual chat categories and log synchronization into one contest-focused ON4KST client.
✈️ AirScout Integration
Use aircraft scatter awareness directly inside your ON4KST contest workflow.
💬 Dual Chat Categories
Operate in two ON4KST categories at once, for example VHF/UHF and microwave.
📡 DXCluster Server
Use DXCluster information as part of the wider contest operating workflow.
KST4Contest Features
🔄 Log Synchronization
Connect ON4KST chat workflow with Win-Test, UCXLog and contest logging state.
⚡ Macros and Variables
Send recurring contest messages faster with configurable macros and variables.
Powerful features
Everything you need for contest success
Every feature is designed to reduce operator workload and improve decision speed during real contest operation.
ON4KST Chat
Dual Chat Categories
Operate in two ON4KST categories at once, for example VHF/UHF and microwave.
Learn more →Radio Workflow
DXCluster Server
Use DXCluster information as part of the wider contest operating workflow.
Learn more →KST4Contest Features
Learn more →Logger Integration
Log Synchronization
Connect ON4KST chat workflow with Win-Test, UCXLog and contest logging state.
Learn more →Operator Speed
Macros and Variables
Send recurring contest messages faster with configurable macros and variables.
Learn more →Contest Workflow
Priority Score System
Find the most promising stations faster using contest-aware candidate scoring.
Learn more →Sked Management
Sked Reminder
Keep scheduled contacts visible and avoid missing time-critical skeds.
Learn more →Contest Awareness
Timeline View
See upcoming AP windows and candidate timing in a compact contest timeline.
Learn more →Open Source
Built by contesters for contesters.
KST4Contest is developed around real VHF/UHF/SHF contest workflows: ON4KST chat, aircraft scatter, skeds, logging and fast operator decisions.