Aaargh, I meant R19/R20, not 80/81.
Gottlieb, Jonathan wrote:
> I've got k2/100 #4856. I've done the C80, C81 mod. Everything
> checks out great, except I still get Hi Cur on 30 M and it doesn't
> seem very robust on 20 or 17 SSB. 80 and 40 M SSB output is
> fantastic, often peaking right at 100 watts. I get 100 W in CW key
> down on all bands except for 30 M where I get the Hi Cur display.
> Any thoughts or ideas on how to fix the Hi Cur on 30 and the less
> than robust SSB output on 20 and 17?
If you get 10 watts output when the K2 is in QRP mode with a reasonable
current draw (less than 3 amps), then you might have resistors at R80-81
in the KPA100 that are too inductive. In a private email, I was told by
one person who had a similar problem that he got good results by
replacing these resistors with Vishay BC 1.6 ohm, 2W, 5%, metal film
resistors (Mouser Cat No. 594-5083NW1R600J; Vishay P/N
5093NW1R600J12AFX) that are known to have lower inductance. I haven't
tried this personally. I suggest corresponding with Gary at Elecraft
about your problem.
--
73,
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco_______________________________________________
Elecraft mailing list
Post to:
[hidden email]
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
http://mailman.qth.net/mailman/listinfo/elecraftHelp:
http://mailman.qth.net/subscribers.htmElecraft web page:
http://www.elecraft.com_______________________________________________
Elecraft mailing list
Post to:
[hidden email]
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.htmElecraft web page:
http://www.elecraft.com
Locked
