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Re: [TenTec] Corsair II Amplifier Relay

To: tentec@contesting.com
Subject: Re: [TenTec] Corsair II Amplifier Relay
From: "Dr. Gerald N. Johnson" <geraldj@weather.net>
Reply-to: geraldj@weather.net, Discussion of Ten-Tec Equipment <tentec@contesting.com>
Date: Tue, 05 Oct 2010 23:15:51 -0500
List-post: <tentec@contesting.com">mailto:tentec@contesting.com>
Why would you want a PIN diode? That relay doesn't handle RF, its to KEY 
the PA control circuit. You could replace it with a transistor, either 
bipolar or FET providing the PA keying circuit was at a compatible 
voltage (including polarity) and current. The relay has some versatility 
that way being polarity insensitive and at least one amp, the Collins 
30L-1 has a negative keying voltage with significant current. Negative 
like -120 volts DC.

73, Jerry, K0CQ

On 10/5/2010 10:06 PM, Patrick wrote:
> I thought this had probably been covered already but I cannot find
> anything about it in the archives or by Googling. Has anyone replaced
> the amplifier relay in the Corsair II with a PIN diode? I read the
> different ways to silence the relay but nothing about replacing it with
> something else.
>
> Thanks,
> Patrick
> KA4ZNU
>
>
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