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Re: [Amps] Vacuum Relay Question

To: amps@contesting.com
Subject: Re: [Amps] Vacuum Relay Question
From: Jim Brown <jim@audiosystemsgroup.com>
Reply-to: jim@audiosystemsgroup.com
Date: Mon, 26 Jul 2021 10:59:00 -0700
List-post: <mailto:amps@contesting.com>
I don't understand this concern. Vacuum relays have been widely used for decades for antenna switching in power amps, where the impedance, and thus voltage and current, are the same as for this application.

What am I missing?

73, Jim K9YC

On 7/26/2021 3:08 AM, Rob Atkinson wrote:
I would not use a vacuum relay in a matching network for a 1/4 w.
antenna.   That's a low v. high current setup calling for open frame
contactors or at least large open relays.  Perhaps this information
will render your question moot.


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