Accurate timing is everything for FT8 and FT4. You must ensure your PC's clock is synchronized to an internet time server.
: Optimized for modern 64-bit systems running Windows 10 or Windows 11. jtdx 22160 download updated
What are you using (Windows 10/11, Linux, or macOS)? Which transceiver model are you connecting to the software? 2) version ? Accurate timing is everything for FT8 and FT4