On Thu, 2008-12-04 at 06:10, Jon K Hellan wrote: > G4AFU Paul wrote: > > For some unknown reason my K3 (897) tripped out 3 times last night when on > > 160m cw. ... > This happens to me when SWR is a bit off, and also happened with my > previous rig. I haven't measured, but I suspect that it's pulling more > current, making the power supply voltage drop.
If the power supply voltage drops, the K3 has to draw more current to get 100W output. That can cause the over-current sensor in the K3 to trip. I found that, in addition to voltage sag in the power supply itself, I was getting three-quarters of a volt drop just in the power supply cable (the one that was supplied with the K3). I don't need all that length so I cut it in half to reduce the voltage drop. Al N1AL _______________________________________________ Elecraft mailing list Post to: [email protected] 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
