A CM-500 does not need RPH bias mic settings it is a high output element and RPL bias will do fine with mic gain beteeen 10-20 (I use 17).
Sent from my iPhone ...nr4c. bill > On Aug 23, 2020, at 1:19 PM, Dave Erickson <ra...@disseminator.net> wrote: > > This just happened to me. I heard a screeching whine when hitting transmit > in ft8, turns out the recent update reset all my sound assignments. > > 73 > >> On 8/23/2020 11:01 AM, Buck wrote: >> I would suspect a Windoze update scrambled your sound assignments. Go back >> and check all your settings. >> >> k4ia, Buck >> K3s# 11497 >> Honor Roll 8B DXCC >> EasyWayHamBooks.com >> >>> On 8/23/2020 11:56 AM, N4ZR wrote: >>> Recently, I began trying to use the rear microphone jack on my K3 with my >>> Yamaha boom mike, instead of using a stand-alone USB sound card and feeding >>> the signal to the LIN IN jack. This worked fine for a couple of weeks, but >>> today when I tried it, I got very loud white noise driving my radio and amp >>> essentially to full scale. I have MIC SEL set to RPH BIAS, which has worked >>> in the past. Any MIC gain setting over 7 drives the amp to full output. >>> When I pull the mike plug out of the jack, the problem goes away. >>> >>> Have I inadvertently messed up another setting, or perhaps a failure in the >>> mike? >>> >> ______________________________________________________________ >> 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 ra...@disseminator.net > > -- > Dave Erickson > k0dom > 73 > > ______________________________________________________________ > 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 n...@widomaker.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