Re: Raduino clicking when microphone is connected or keying CW. #ubitx-help #radiuno



i would do some probing with a continuity checker (like your DVM) to see what is what with your construction.  if rig goes into transmit when plugging in your microphone, somehow it is making a connection to ground.  the matter at hand is there needs to a common connection between the mic audio return, and the unswitched end for PTT -- to allow suitable current flow for each function.  if you can tell which microphone connection is attached to the 'braid' this may solve your issue.  or try reversing PTT and ground in the wiring. 

now if somehow in your microphone wiring both PTT and common are simultaneously connected - then you would have a short in your microphone wiring. 

73 Curt

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