>
>I have a problem with an SB1000. It works fine on all bands except
>160m.
>I have replaced all the padding caps; the amp draws 350 ma Ip, 70ma Ig,
>and passes thru the drive power of about 30 watts.
>I can get it to deliver about 200w but only if I take out the padder
>capacitor of 170mmf
>in the output section of the pie net, which also is needed on 80m to
>function properly.
Hello, Alex -- 200w out on 80m is too low.
> I am beginning to suspect the toroid L9 but i do
>not understand the function of L9. Can someone explain what L9 does?
>Is it an added l in the pie circuit? I t also appears that 1/2 of L9
>stays in at 80m, which works just fine with the right power, Ip, Ig
>etc.
> ... ...
If max. power out occurs at either limit of the Tune-C or Load C, the
bandswitch may have contact problems. A dental mirror and a flashlight
are useful tools for checking bandswitch contacts.
cheers
- Rich..., 805.386.3734, www.vcnet.com/measures.
end
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