[Elecraft] K3 - Erratic receive

Mark Musick markmusick at outlook.com
Thu Nov 30 01:09:39 EST 2023


Hi Pete,
The gold pins did not appear as part of production until somewhere around serial #4100.
I had K3 Serial #3505 and had to have the front panel pins upgraded to the gold standard.

73,
Mark, WB9CIF

-----Original Message-----
From: elecraft-bounces at mailman.qth.net <elecraft-bounces at mailman.qth.net> On Behalf Of Pete Smith N4ZR
Sent: Wednesday, November 29, 2023 20:35
To: Elecraft List <elecraft at mailman.qth.net>
Subject: Re: [Elecraft] K3 - Erratic receive

Hi Bill - I'm pretty sure my radio is late enough so that it has the upgraded pins that were introduced to deal with that problem, but thanks for responding.

73, Pete N4ZR

On 11/29/2023 3:28 PM, Bill Johnson wrote:
> Pete,  have  the front panel pins corroded?  There is an upgrade
> available.
>
> Bill
> K9YEQ
> ----------------------------------------------------------------------
> --
> *From:* elecraft-bounces at mailman.qth.net
> <elecraft-bounces at mailman.qth.net> on behalf of Pete Smith N4ZR
> <pete.n4zr at gmail.com>
> *Sent:* Wednesday, November 29, 2023 1:11:14 PM
> *To:* Elecraft List <elecraft at mailman.qth.net>
> *Subject:* [Elecraft] K3 - Erratic receive My 2400-serial number K3
> has begun to have a sporadic receive problem, which has gotten much
> worse recently.  It's really weird.
>
> What happens is this - the receiver sporadically loses most of its
> audio output level, until I move the AF pot a couple of degrees either
> way, at which point it immediately restores the audio.  Often, but not
> always, this occurs right after a transmission (on CW), so I was
> initially suspecting a failing relay, but the way it responds to a
> minute change in the AF level setting makes me think something subtler. Any ideas?
>
> --
> 73, Pete N4ZR
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