Contest Workflow
Priority Score System
Find the most promising stations faster using contest-aware candidate scoring.
Learn more →The contest-optimized ON4KST client
KST4Contest
Work smarter. Make more QSOs. Built for serious VHF, UHF and SHF contest operators.
Powerful Features
Everything you need for contest success
Aircraft Scatter
AirScout Integration
Use airplane scatter awareness directly inside your ON4KST contest workflow.
Learn more →Contest Awareness
Timeline View
See upcoming AP windows and candidate timing in a compact contest timeline.
Learn more →Sked Management
Sked Reminder
Keep scheduled contacts visible and avoid missing time-critical skeds.
Learn more →Logger Integration
Log Synchronization
Connect ON4KST chat workflow with Win-Test, UCXLog and contest logging state.
Learn more →ON4KST Chat
Dual Chat Categories
Operate in two ON4KST categories at once, for example VHF/UHF and microwave.
Learn more →Why KST4Contest?
Built by contesters for contesters.
Contest Workflow
Unlike traditional ON4KST clients, KST4Contest focuses on operator workflow instead of simply displaying chat messages.
Decision Support
Priority candidates, activity detection, AirScout integration, timeline and sked reminders help operators make better decisions.
Open Source
KST4Contest is open source and continuously developed together with the amateur radio contest community.