[Amps] Teflon Caps

donroden at hiwaay.net donroden at hiwaay.net
Wed Mar 17 13:50:03 PDT 2010


I had  ( have ? ) one of those babies somewhere. Light yellow oil.
Rummaging through the ham shack.

Don WA4NPL

Quoting "Bill Fuqua" <wlfuqu00 at uky.edu>:

>
> This reminds me that some where I have a very strange variable capacitor
> that is oil filled and has a bellows to allow operation at high altitudes.
> It is obviously an RF variable, perhaps a pre-vacuum capacitor type for
> high altitudes and voltages.
> It is neat because it is enclosed in a glass envelope and you can see all
> the insides. It is constructed as a usual capacitor with rotor and stator
> plates. Not like the coaxial ones as in vacuum capacitors.
>      Needless to say a rotary shaft  vacuum connection would be difficult
> but not impossible.
> 73
> Bill wa4lav
>
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