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. 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. Thanks fer help.
By the way i cured the parasitics with a Measures kit which cured the
problem.
Reply here. alex w2ox
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