I’m curious about something I observe about the FT8 signal modulation. It appears to produce a pronounced spike in the audio at the beginning of each 15 second transmission.
When I operate on 160, 80 and 40 meters especially this spike will cause the program to stop producing audio. My computer, a mac mini, is relatively close to the 160m dipole being used on these bands, about 50 feet. If I throttle back to -41 dB or so I can make the transmission begin without stopping the audio, although the spike is still evident. If I then gradually increase the “Pwr” slider I can increase the power without causing the audio to crash. If I leave the power increased the audio will crash immediately after the next transmission period begins. Is this a known problem? 73, Ed W1KOK _______________________________________________ wsjt-devel mailing list wsjt-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/wsjt-devel
