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
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