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Re: [TenTec] Replacing the speaker in a Delta II/Argonaut II

To: tentec@contesting.com
Subject: Re: [TenTec] Replacing the speaker in a Delta II/Argonaut II
From: "Dr. Gerald N. Johnson" <geraldj@storm.weather.net>
Reply-to: geraldj@storm.weather.net, Discussion of Ten-Tec Equipment <tentec@contesting.com>
Date: Mon, 06 Oct 2008 15:02:53 -0600
List-post: <tentec@contesting.com">mailto:tentec@contesting.com>
On Mon, 2008-10-06 at 15:53 -0500, Stuart Rohre wrote:
> The hot audio output stage says to check for partially shorted coupling 
> capacitor, or a by pass capacitor on the speaker output line.   Sometimes 
> there is a resistor in series with a cap, and if the cap shorts you will 
> have hot audio stage.  The leakage of DC thru a bad coupling cap could also 
> cause the distortion.
And your cat may be leaving for other territories because when that
series RC isn't there the amplifier will oscillate at ultrasonic
frequencies. Its a parasitic suppressor.

> Stuart Rohre
> K5KVH 
73, Jerry, K0CQ

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