My incident yesterday was on 20M CW during the NAQP.  After transmitting I 
suddenly could not hear any sigs.  I looked at my P3 and there were plenty 
of strong sigs showing up, but I just could not hear them.  I tried to tune 
around, but could not hear anything.  I tried transmitting and SWR seemed 
okay.  I was at first unsure what to do, but I decided to change bands by 
hitting the band button and I believe went down to 30M.  I then went right 
back up to 20M and AF was restored.  After that I resumed the contest with 
no problems.   I was using LPBridge and running N1MM and my regular logging 
program at the same time.   Sometimes LPBridge can get hung but that did not 
appear to happen this time.  Everything has been working normally ever 
since.

It was very weird to then see the series of emails regarding this same 
phenomenon later in the day!  Seems like a firmware bug, but I have not been 
able to reproduce it.

Dave, N4QS


----- Original Message ----- 
From: "Jack Berry" <jlbe...@yahoo.com>
To: "Dave, W8OV" <w...@verizon.net>
Cc: <elecraft@mailman.qth.net>
Sent: Sunday, January 15, 2012 7:40 AM
Subject: Re: [Elecraft] De-sensed K3 after xmit


> Thanks everyone. I'll check AGC and PL-259's today when I get back to the 
> shack. I have  not (purposefully) touched AGC so it should at default 
> settings. Seldom use noise reduction either. I will pay close attention to 
> signal strengths as well.
>
> Jack
>
> On Jan 15, 2012, at 7:32 AM, "Dave, W8OV" <w...@verizon.net> wrote:
>
>> I had a similar problem years ago with other gear.  It all went away
>> when I replaced a connector feeding the coax through a wall.
>>
>> --Dave, W8OV
>>
>> On 1/14/2012 9:15 PM, Jack Berry wrote:
>>> Anyone have a similar experience?
>>>
>>> Only occasionally, I notice that when I end a transmission my K3 receive 
>>> seems almost muted.  It recovers to normal sensitivity very quickly. I 
>>> so far see no pattern to the effect that might suggest a cause.
>>>
>>> Thanks,
>>> Jack - WE5ST
>>>
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