[Amps] James Millen Variable Capacitor

[Vic Rosenthal]

David C. Hallam wrote:

> I have a James Millen air variable capacitor and the only marking I can find
> on it is 125Y5.  None of my reference catalogs have any listing for Millen
> capacitors.  Can anyone tell me what the capacitance and voltage rating are
> from that number?  Plate spacing is approximately 0.060-0.070" so I am
> assuming the voltage rating is about 2500 volts.

Millen numbers are all numeric, so that number isn't correct.  It MIGHT be 
12515, which is 18-151 pf, 0.077" spacing.  In 1944, the cost was $4.50.

-- 
73,
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco