An air variable is exactly what I was thinking, Dave.
My 160m inverted-L tuner uses just two air variables. I padded the HV
variable with a small 100 pf N1500 (or two) doorknob with no problem.
I use those same doorknobs as padders in my HB legal-limit amplifier, but
they do cause the tuning to drift. :-(
I have also seen fixed-value HV vacuum capacitors at hamfests.
73 Mike
W0BTU
On Thu, Jan 9, 2020, 3:15 PM David Olean <k1whs@metrocast.net> wrote:
>
> ... What about an air variable in a wx proof box?
>
>
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