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 <k1...@metrocast.net> wrote: > > ... What about an air variable in a wx proof box? > > _________________ Searchable Archives: http://www.contesting.com/_topband - Topband Reflector
