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 > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
