Re: K3-S RF output pulses while TX in FT8

Bob McGraw - K4TAX

Those frequencies are all multiples of 500/1000/1500/2000 thus related.  Try something different like 1396 Hz. or such.   Sounds like you may have RF getting into the line between the radio and computer or into the computer.  To test, use lower power and/or a dummy load.   Add clamp-on ferrite to each end of the cable, especially the computer end.   I use the size for RG-8 which is large enough to get 2 or 3 turns through the core. 

Bob, K4TAX

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