It sounds like that signal was a harmonic of your primary signal. If it was
1KHz off, it might have been the second harmonic of a 1KHz audio tone.
These harmonics are almost certain if you are overdriving the audio chain, so
checking the drive is the first thing. Your drive to the radio at 4
Dear Folks:
I'm not really a big FT8 operator, but if you want to work 6 meters,
that's where the action is. Recently, a local ham sent me an email
indicating that I was broadcasting, in addition to my primary FT8
signal, a secondary wider bandwidth signal about 1 khz above my primary
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