Well here's the thing. 6m is most current hungry band and the one most likely to give you current warnings. I had the same comment for 6m cw chirp with mine.
If you replace the APP connectors and use 10mm^2 cable in short to a close by solid 15v 30amp supply(I use a sw/mode), the chirp disappears. Your 3rd order TX IMD improves several to 10dB. The current warnings go away, The power level issues (starting too low then recovering) go away, despite all the TX gain calibrations you have tried. I only really liked my K3 after doing above. Adrian ... vk4tux -----Original Message----- From: Peter Chamalian [mailto:w...@arrl.net] Sent: Monday, 13 August 2012 2:26 AM To: 'Adrian'; elecraft@mailman.qth.net Subject: RE: [Elecraft] K3 Chirp on 6 Meters The voltage read by the internal K3 meter says the voltage drops to 12.6 volts which I reported to the tech's at Elecraft. They did not think it significant. Also, the problem only has been reported on 6 meters. I'm a 98% Cw operator so if there was a hint of a chirp on the HF bands, it would have been brought to my attention by those I work regularly. The power lead I use is the one supplied by Elecraft. Pete, W1RM -----Original Message----- From: Adrian [mailto:vk4...@bigpond.com] Sent: Sunday, August 12, 2012 10:04 AM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] K3 Chirp on 6 Meters Measuring voltdrop at the supply i.e. 13.77v to 13.74v is irrelevant. Please tell us what it is at the APP connector or screen (load end) please? I had several of them and my K3 is back at Elecraft right now for service, but they are not able to reproduce the problem. I know there is a mod for the synthesizer board and that was made without solving the problem. No, it's not my power supply either - a big 50 amp Astron provides 13.77 volts key up and 13.74 volts key down. It's not RF because when I got the report I reduced power (external amp off) down to the point where the station could not copy me and the chirp was still there. The strange thing is I had a local listen to my signal and it was clean. At a later time, two reports (one from eastern MA the other from SC and I'm in central CT) said I had a chirp. In both cases I had been on 6 for a while. Is it frequency dependent? Is it heat dependent? Again, I would appreciate hearing from you if you have had reports of a chirp on 6 meters - what frequency were you on at the time? How long had you been operating (was the rig getting warm?) or any other observation that might help to pinpoint a way of duplicating the problem. Thanks! Pete, W1RM ______________________________________________________________ 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
