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[AMPS] High-SWR protection

To: <amps@contesting.com>
Subject: [AMPS] High-SWR protection
From: ccc@space.mit.edu (Chuck Counselman)
Date: Mon, 30 Oct 2000 10:43:49 -0500
Tom Rauch <w8ji@contesting.com> wrote:
>If the relays in the amp are properly sequenced, dropping the relay
>line won't hurt a thing.

That sounds right.  Thanks.  Sorry -- I was guilty of mindlessly parroting
the advice on RFApplications' website.  Perhaps someone from RFApplications
will chime in to enlighten us?


>I'd be reluctant to use application of ALC voltage as the sole means
>of shutting off the exciter, because ALC lines can be a bit slow and
>you also must depend on an external negative supply. Anything
>gets unplugged or shorted and you have no protection.
>
>If I used ALC, I'd be darned sure I also dropped the antenna relays
>during a fault.

Sensible advice.  Thanks again.

73 de Chuck W1HIS



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