[Amps] Clipperton-L question

[Vic K2VCO]

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 at fsmail.net>
> To: "Carl" <km1h at jeremy.mv.com>; <amps at 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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>
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-- 
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco/