Keith, From your original post you seemed to say that the signal output dropped whilst the K3 was still in TX, i.e. you say " during PTT transmit ". So was the TX indicator active during "my transmit audio cutting out" ?
This would indicate no problem with the ptt, but the audio - signal circuit chain, or rfi issues. Can you clarify please? I guess Don interpreted your original post different to myself. I would test sending dits into a DL for the same period to check power level consistency before looking at other areas. -----Original Message----- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Keith Heimbold Sent: Friday, 27 July 2012 10:53 PM To: d...@w3fpr.com Cc: Elecraft Group Subject: Re: [Elecraft] K3 transmit audio cuts out 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" <w3...@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 >> ______________________________________________________________ >> 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 ______________________________________________________________ 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
