They certainly have a lot of contact area, and they seem to be well insulated. I had a
friend who used one for the bandswitch of his 4-1000A amp, which operated at over 4 kV.
Every few years he got someone (me, twice) to replace it for him. He swore that he never
hot-switched it, but the contacts were destroyed. I think there was corona discharge which
little by little ate the contacts and deposited metal on the ceramic. Finally it would arc
and destroy itself.
On 9/12/2013 9:40 AM, Carl wrote:
I believe they were initially unique to the BC-375 (maybe the BC-196
predecessor) and then
used as surplus in a lot of HB and commercial ham gear. Ive not seen them in
any other WW2
or earlier gear.
Ive switched up to 4500VAC/6KV DC with them using an insulated mount and shaft
coupler/extension shaft.
Last available from Multi Tech Industries (Ex Radio Switch Corp) but recently
dropped I
believe.
Carl
KM1H
----- Original Message ----- From: "peter chadwick" <g8on@fsmail.net>
To: "Carl" <km1h@jeremy.mv.com>; <amps@contesting.com>
Sent: Thursday, September 12, 2013 11:40 AM
Subject: Re: [Amps] Clipperton-L question
Carl,
Do you know if those BC375 switches (still available from Fair Radio Sales!)
were a
standard switch that mostly got used in the BC375, or were they manufactured
especially
for the BC375?
73
Peter G3RZP
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Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco/
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