[Elecraft] K3S MIC Problem

[Bob McGraw]

Having a K3S, s/n 10169, early model, I've used a Shure SM-58 with great 
results for SSB.  I made my own cable for the mike to radio.  I also 
control the radio from the computer via USB while running 500 watts, 
160M - 6M, and simply experience no RFi issues.  No ferrites needed on 
any cables, audio, USB,  R73F,  or otherwise.   Not experienced external 
applications changing the levels.  Nor have I experienced any of the MS 
updates causing issues with settings or drivers.   No issues of MIC or 
Line level changes when running SSB or digital modes.

I take all of the MS updates automatically, keep all applications up to 
date, and I am very careful about loading any programs or applications 
which claim to improve performance.   And I make it a weekly routine of 
cleaning and maintaining my computers.   I find this to be a key to 
reliable operation.   I use CCleaner, paid version,  to handle computer 
maintenance and AVG, paid version, to handle virus and internet security.

73

Bob, K4TAX




Message: 14 Date: Mon, 23 Nov 2020 11:50:51 -0500 From: Bill Rogers W3UL 
<w3ul.bill at gmail.com> To: Elecraft Reflector <Elecraft at mailman.qth.net> 
Subject: [Elecraft] K3S MIC Problem Message-ID: 
<CACABhHKQZ60oWeQ61O5yN601yPY1FOEhz2hcFCiSLSY_bhTf0g at mail.gmail.com> 
Content-Type: text/plain; charset="UTF-8" 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.

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