Fraser, Just checked my K2/100 setup. For 100w it draws 20Amps, so something is wrong. I would check the KPA100 160m low pass filter components. If you have access to an antenna analyser such as a MFJ then use that with the dummy load. If not use a signal generator along with your scope.
73 Stewart G3RXQ On Tue, 01 Mar 2005 14:19:42 +0000, Fraser Robertson wrote: > I've just noticed that our club's K2/100 (#3764) draws excessive current on > > topband. > > Going through the bands my own K2/100 (#4368) draws between approx. 15-19A > at full power setting, (circa 100W o/p). The club rig draws between approx. > 16-20A in the same test, but on topband the current consumption is 27A !! > > I did not build the clubs rig, but the ham who built it has built several > K2's. > > Both rigs have the latest mods/screening/upgrades, including the PA > instability fix for 80m. There does not appear to be any instability on > topband - I've checked on a scope and spectrum analyser. > > It's possible the club's PA missed out on a mod early in it's life? > > Any ideas please? Looks like it's short of some L or C somewhere. > > Thanks, Fraser G4BJM > > _________________________________________________________________ > Express yourself with cool new emoticons http://www.msn.co.uk/specials/myemo > > _______________________________________________ > 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
