The K3(s) as I understand it has protective circuitry that will reduce mic output if there are return power issues.
I once had an experience during Field Day where my K3 was suddenly not transmitting or doing so at a very low level. Mine was traced to a SO239 connector that had worked loose and was not making good connection. You can also try recalibrating TX to see if that helps. In my case the unit went back to the factory for diagnosis, inspection and repair. Elecraft's gentle ministrations restored it to full function and I have not had a problem since. -----Original Message----- From: elecraft-boun...@mailman.qth.net <elecraft-boun...@mailman.qth.net> On Behalf Of j...@kk9a.com Sent: Monday, November 23, 2020 10:27 AM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] K3S MIC Problem I have not seen this occur, is there any chance that you were adjusting the VOX or some other way of accidently bumping that control? John KK9A (W4AAA in last weekend's Sweepstakes) Bill Rogers W3UL wrote: I'm guessing that I'm not the first to notice this on the K3S. I don't do much SSB but was active in Sweepstakes this past weekend and noted that occasionally the audio would go dead. Looking around I found that the MIC gain had dropped from the usual (about 16) down to zero. I placed a toroid around the MIC cable and this seemed to prevent the problem most (but not all) of the time. The MIC cable (and the K3S) both sit next to an Alpha 87A amp. I don't recall reading about this. Is some protective function being activated? -- 73, William (Bill) Rogers / W3UL Annapolis, Maryland U.S.A. ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to gthorn...@thorntonmostullaw.com ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
