[Elecraft] Looking for some more "Punch" on SSB and No Hi Cur on 30 M

[Vic Rosenthal]

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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