Have you tried re-doing the tune at 5 watts and 50 watts to try and recalibrate the tx gain settings?
On Sun, 2008-06-29 at 20:30 -0700, Don Ehrlich wrote: > Starting with my first qso after loading Beta 2.10 last week my K3 shut down > (turned off) unexpectedly in the middle of an SSB qso while I was > transmitting at about 60 watts PEP out. Later I was able, after several > failed attempts, to turn it on again and now, a few days later, it is > happening again. Now, though, it looks like a hard failure. Any attempt to > transmit at over about 30 watts out results in shutdown. This occurs on > both 160 and 80 meters. I have not tried other bands. > > The symptoms are that indicated peak output power is is about three times > the specified amount. At around 40 watts commanded actual power is up to > over 120 watts and that is about the level where shutdown occurs. As I > write this the K3 is in CW mode on 80 meters connected to a 50 ohm dummy > load. The output power is set to 30 watts and when I press the TUNE button > actual output power indicated by an external meter (average, not peak mode) > shows a power of 30 watts varying 1 or 2 watts plus and minus. When switched > to peak mode the external wattmeter indicates 70 watts. The input current > is varying from 6 to 13 amps as indicated on the K3 digital display, and the > SWR indication on the display is flashing 1.0 - 1 on and off at an uneven > rate and the RF output indication on the K3 display is 70 watts but also > flashing and jittering. > > This started with FW beta 2.10 and I hope that is the problem but I'm > worried that it might be something more serious. > > I have made no changes to settings recently. > > HELP! > > Don K7FJ > > _______________________________________________ > Elecraft mailing list > Post to: Elecraft@mailman.qth.net > You must be a subscriber to post to the list. > Subscriber Info (Addr. Change, sub, unsub etc.): > http://mailman.qth.net/mailman/listinfo/elecraft > > Help: http://mailman.qth.net/subscribers.htm > Elecraft web page: http://www.elecraft.com _______________________________________________ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
