KST4Contest is an open-source desktop client for the ON4KST amateur radio chat, designed specifically for VHF, UHF and SHF contest operation.

It combines ON4KST chat with contest-oriented station prioritization, sked management, AirScout aircraft-scatter information, map and path analysis, DX Cluster integration and worked-status synchronization.

KST4Contest also integrates with contest logging and station software including Win-Test, UCXLog and PSTRotator.

The software is available for Windows, Linux and MAC OS.

For downloads, documentation, screenshots and further information, visit the official KST4Contest website.

Project Samples

Play Video Map view with chat Dark Mode with AP integration and band opportunities Userlist with filtering options Airplane Scatter and Sked timeline Online users map with path calculation example

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Registered

2026-08-09
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