>
>Hi All:
>Can anyone tell me what would be the proper procedure for adjusting the
>input coils on an amp like the SB-200 or SB-220? Tried adjusting a SB-200
>last night by tuning the coil slugs while driving the amp to close to full
>output into a dummy load with a TS-440. Turning the coil slugs all the way
>in to all the way out made absolutely no improvement in the 3:1 SWR
>presented to the transmitter. Any help greatly appreciated.
>
The basic problem is not enough Q. see "Circuit Improvements for the
Heath SB-220 Amplifier" Nov/Dec 1990 QST.
later, Tom
- Rich..., 805.386.3734, www.vcnet.com/measures.
end
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