[Amps] Teflon Caps

[Bill Fuqua]

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