[Elecraft] Sudden loss of K3 RX sensitivity

[Buck]

I have had a similar loss of RX on my K3S.  It is cured by turning the 
RF control down and then back up.  I don't know what causes this and 
whether it is hardware or software related.  A twist of the knob is all 
it takes to fix so I live with it.

Buck, k4ia
Honor Roll
8BDXCC
EasyWayHamBooks.com

On 2/23/2021 8:40 AM, Mike K8CN wrote:
> Pete,
> 
> There was a similar report on the forum last year from Per-Tore, LA7NO. In
> an extended email conversation we deduced his problems were caused by failed
> PIN diodes in one of the T/R switches, which ultimately proved to be the
> case.  His K3 also lost TX power, unlike your situation, so you may have
> lost only the PIN diode in the RX path.  There were many other possible
> causes suggested by others on the forum around that time (late July 2020) -
> you might read that thread and try the simple fixes first (e.g., twist and
> re-seat the TMP connectors) before delving into circuit/component failure
> possibilities.  The old thread is here:
> 
> http://elecraft.365791.n2.nabble.com/Elecraft-K3-problem-td7663573.html#a7663581
> 
> 73,
> Mike, K8CN
> 
> 
> 
> 
> --
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