Just move the 20m tap to about halfway between its original location and the
40m tap. This should have no effect on 80/40 at all.
Vic 4X6GP
> On 6 Oct 2017, at 5:58, jerome schatten <romers@shaw.ca> wrote:
>
> Hi…
>
> On 30m using the 20m band-switch position, I’m able to get about 200w out
> into a dummy load/wattmeter before the grid current rises faster than the
> plate current. On 80/40 I can get over 400w out. Since I’m only interested
> in using the amp on 80/40/30, I thought to improve the 30m situation a bit by
> adding a few turns to the total pi-network inductance in the 20m position.
>
> I’m willing to sacrifice a bit of efficiency on 80/40 to bring up 30 and
> sacrifice 20/15/10 entirely. The goal here would be 300+ watts on 80/40/30
> with ease. I have already taken care of the input matching for 30 in the 20m
> position.
>
> I would appreciate any suggestions.
>
> Jerome - va7vv/ve7ass
> Vancouver
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