[Elecraft] Odd K-3 Symptom

[Bob McGraw]

Pete:

(a)  Check all PL-259 connectors are more than finger tight.  I use a 
pair of 4" Channel Locks to snug mine.  Solves many problems.

(b)  Make sure all RF coax antenna cables have proper common mode 
chokes.   This depends largely on the type of antenna and where best to 
install the chokes.

(c)  You may need to add some common mode chokes on various cables to 
and from the computer.

(d)  Each piece of station equipment should be bonded to a common point, 
using a dedicated bond jumper.  A don't advocate using the daisy chain 
method but prefer the star bonding method.

73

Bob, K4TAX


On 5/29/2023 8:45 PM, elecraft-request at mailman.qth.net wrote:
> Message: 12
> Date: Mon, 29 May 2023 07:54:54 -0400
> From: Pete Smith N4ZR<pete.n4zr at gmail.com>
> To:Elecraft_K3 at yahoogroups.com, Elecraft List
> 	<elecraft at mailman.qth.net>,	"N1MMLoggerPlus at groups.io"
> 	<N1MMLoggerPlus at groups.io>
> Subject: [Elecraft] Odd K-3 Symptom
> Message-ID:<d265ab10-dd67-d9c3-b742-fa8b73362b75 at gmail.com>
> Content-Type: text/plain; charset=UTF-8; format=flowed
>
> During the WPX CW contest, I was having some trouble with RF getting
> back into my K-3 from my KPA-1500, displaying HI RF warnings and
> magically adjusting my audio gain after each transmission.? Tightening
> ground connections effectively solved? the situation, but during the
> last few hours, I started noticing ERR PTT warnings very briefly after
> each transmission.? I was using N1MM Logger+ to control PTT, and have
> just confirmed that this error only occurs when N1MM is controlling
> PTT.? Any ideas?
>
> -- 73, Pete N4ZR