Re SB 200

[Mark Graalman WB8JKR]

  John, when you reduce drive you also need to retune,
and if your grid current is low could be your loaded too
heavy and that would also cause the plate current to be
a bit high. Do what you want, but changing caps isn't
going to fix it.

73,  Mark  WB8JKR


On Thu, 4 Apr 2002 11:38:06 EST John Barkow <KD6PT at AOL.COM> writes:
> Hi Gang.  Thanks for all the replys. Harbachs lists several sources
> for he
> doorknob capacitors but they are very expensive now...about $14.00.
> The idle
> current is steady at 90 mils and when fullly loaded, grid current
> remains low
> but plate current is about 700mils with the new tubes. This is true
> on all
> bands.  Decreasing the drive does reduce the plate current, however,
> when the
> plate current is reduced to around 500 mils, the output power drops
> to about
> 300 watts CW. I have the Harbach power supply and soft-key modules
> installed.
>  The old Citron tubes ran 500mils fully loaded with 100W drive and
> about 400W
> output.
> Any other suggestions?
> John kd6pt
>
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