I noticed that if I put the radio into Test mode, PTT on the front panel does 'mock key the radio' and illuminate the TX light. However, if I ground the TX line into the rear panel in Test mode, it's ignored. I didn't see this in the manual, nor did googling for "elecraft K3 test mode rear PTT" yield anything useful. Others might get stumped on this one as I was for a bit, thinking that my PTT line was amiss. Is this a bug? If not, can it be documented? Could it be a setting in a future firmware version?thanks,Brian N9ADG
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