Topband: de n7dd

[Mike Waters]

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 at metrocast.net> wrote:

>
>  ... What about an air variable in a wx proof box?
>
>