[Elecraft] K3 transmit audio cuts out

[Keith Heimbold]

Hi Don,

Thanks for the quick recommendation. I will give that a try this morning. 

I did a complete switch out of the headset, PTT switch and adapter and experienced the same cutout. I did consider this being an RFI issue. I was doing a bit more ragchewing then usual last night.

I will try your recommendations and report back.

Thanks,

Keith
AG6AZ

Sent from my iPhone please excuse typos

On Jul 27, 2012, at 5:48 AM, "Don Wilhelm" <w3fpr at embarqmail.com> wrote:

> 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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