I'm testing an amp, and it puts out 1.5kW+ 160-10M, but the power drifts, on
160 and 80.
Searched the archives for fixes, and (from 9 years ago) found posts indicating
that the padders in the loading portion of the tank circuit heat up from r-f
current, and change value.
Checking RF Parts for doorknob-style capacitors, I see only N750 temp coeffs in
suitably-valued (150 pF to 1500pF) components.
The plate tuning capacitor also has this same style padder switched in on 160M.
Are these N750 capacitors suitable as padders in this r-f application?
What's to do?
Thanks in advance.
Brgds,
Dave Windisch, W8FGX
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