K3 noisy transverter board

[drewko]

My K3 has intermittent noise in the receiver which I've localized to
the transverter board. The noise is an even  static, like background
atmospheric noise, about S3 on the s-meter with occasional stronger
bursts. This is with no antennas connected to the rig and nothing
plugged into the transverter board.

Is this a known problem? It would probably not normally be noticed
without disconnecting the antennas and waiting for it to occur.

It seems to be an electrical contact problem as I can induce it or
quiet it by loosening the board's panel screws and pushing on the
jacks in one direction or another.

I've tried to wipe the contacts by reinserting the board into the
socket several times. Same with the TMP cable. But the noise has
returned.

I'm wondering if the electrical connection between the board's brass
standoff bushing and the aluminum chassis is significant...

73,
Drew
AF2Z

______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[hidden email]

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to [hidden email]

[drewko]

I forgot to mention: the noise is silenced when the KXV3 is placed in
TEST mode.

73,
Drew
AF2Z


On Tue, 05 Aug 2014 09:39:08 -0400, you wrote:

>My K3 has intermittent noise in the receiver which I've localized to
>the transverter board. The noise is an even  static, like background
>atmospheric noise, about S3 on the s-meter with occasional stronger
>bursts. This is with no antennas connected to the rig and nothing
>plugged into the transverter board.
>
>Is this a known problem? It would probably not normally be noticed
>without disconnecting the antennas and waiting for it to occur.
>
>It seems to be an electrical contact problem as I can induce it or
>quiet it by loosening the board's panel screws and pushing on the
>jacks in one direction or another.
>
>I've tried to wipe the contacts by reinserting the board into the
>socket several times. Same with the TMP cable. But the noise has
>returned.
>
>I'm wondering if the electrical connection between the board's brass
>standoff bushing and the aluminum chassis is significant...
>
>73,
>Drew
>AF2Z
>

______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[hidden email]

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to [hidden email]