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Re: [Amps] SB-200 QSK mod info

To: <amps@contesting.com>
Subject: Re: [Amps] SB-200 QSK mod info
From: "Paul Christensen" <w9ac@arrl.net>
Date: Wed, 27 Mar 2013 09:37:09 -0400
List-post: <amps@contesting.com">mailto:amps@contesting.com>
From past measurements, transceivers like the Icom 7700/7800, and K3 all supply RF > 9 ms after amp key line closure.

That should have read "...supply RF > 9 ms after the transceiver's *input* key line closure." The time delay between RF output and the *amp* key line on these three transceivers measures between 6-8 ms. Still, Vasily's measured switch times are well more than fast enough even if the timing sequence is not optimum. Just to be clear, this is not a fault of the W7RY board, but is due to each relay's inherent electromechanical delay.

Paul, W9AC
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