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Re: [TenTec] Orion AM ALC

To: tentec@contesting.com
Subject: Re: [TenTec] Orion AM ALC
From: Rob Atkinson <ranchorobbo@gmail.com>
Reply-to: Discussion of Ten-Tec Equipment <tentec@contesting.com>
Date: Sun, 13 Jun 2010 08:10:31 -0500
List-post: <tentec@contesting.com">mailto:tentec@contesting.com>
Hi Jerry,

Kindly expand upon your statement re "DC offset."  You lost me with that one.

I think what you are writing below has to do with vacuum tube plate
modulated rigs?  A number of asymmetric peak limiter processors for AM
have come to market since the early 1970s.  Yes, some of the older
broadcast rigs had a hard time with them.

Merle:  Too bad Ten Tec assumes everyone wants to be limited to 100%
positive and negative.   The power is in the audio.

73

Rob
K5UJ

>Now you are delivering distorted audio to the modulator, probably with
>some DC offset that isn't supported by capacitor or transformer coupled
>audio stages.

>To get asymmetrical modulation without over modulating going negative,
>you have to introduce the asymmetry AT the modulator, not before and the
>modulator has to be DC coupled at audio.
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