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From: rjr@mgweed.UUCP (Bob Roehrig)
Newsgroups: net.ham-radio
Subject: squelch comments
Message-ID: <18922@mgweed.UUCP>
Date: Tue, 16-Jul-85 15:20:09 EDT
Article-I.D.: mgweed.18922
Posted: Tue Jul 16 15:20:09 1985
Date-Received: Thu, 18-Jul-85 05:03:34 EDT
Organization: AT&T Information Systems - Montgomery Illinois
Lines: 12


Most squelch circuits in FM receivers operate from detected noise, not AGC.
Most FM receivers do not even have AGC since limiting is necessary.
I do remember a few tube-type receivers that had some AGC applied to the
RF amplifier (like the Motorola "SENSICON").

Why try to eliminate the squelch tail anyway? It does serve as an audible
"over" signal. My only objection is to real long tails such as in a receiver
with a very loosely adjusted squelch.

Bob K9EUI