[Elecraft] K3 transmit audio cuts out

[Don Wilhelm]

Kieth,

In cases like that, the first things to check are the external cables - 
in your particular case, the PTT.
If you are using the mic jack PTT, try the one on the back panel - if 
that cures the problem check your cables again.

The other possibility is that something happened in your antenna system 
and you are experiencing RF feedback.  Run the K3 barefoot into a dummy 
load - if the condition persists into a dummy load, then you can 
conclude that the K3 might be to blame.

73,
Don W3FPR
On 7/27/2012 8:36 AM, Keith Heimbold wrote:
> While operating last night on 20m on my K3 serial 1391, I had an issue with my transmit audio cutting out during PTT transmit. Also power output simultaneously dropped out completely in mid sentence. I could see this both on the power meter and hear it on monitor.
>
> I currently use a Heil proset 4 and a heil hand switch with that rig. I then decided to switched headsets and switch to my heil proset 5 and my foot switch which is on my other K3 to determine if it was an issue with headset / PTT switch combination.  Upon transmitting it continued to cut out the audio and power. I was alerted by the ham I was communicating with that I was having an issue with my audio.  This issue continued to persist so I decided to shutdown the system.
>
> My configuration last night also consisted of this K3 unit being connected to my Yaesu Quadra amplifier to my SteppIR three element Yagi. I was operating at about 500W.
>
> This is the first time I have had any issue with this K3 unit though I do experience some unusual receive issues with spurious and higher noise levels with this unit versus my other K3 and my KX3.
>
> Turns out that I am coincidentally sending up my other K3 1526 to Elecraft today for several mods and some additional features to be added. I would like to get the older 1391 unit working before sending 1526 up north.
>
> Any thoughts on what might be happening or troubleshooting options would be great.
>
> Thanks,
>
> Keith
> AG6AZ
>
>
>
> Keith
>
> Sent from my iPhone please excuse typos
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