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Path: utzoo!watmath!clyde!bonnie!akgua!whuxlm!harpo!decvax!genrad!mit-eddie!think!harvard!seismo!brl-tgr!ron
From: ron@brl-tgr.ARPA (Ron Natalie )
Newsgroups: net.ham-radio
Subject: Re: PL, DTMF, etc  comments
Message-ID: <11514@brl-tgr.ARPA>
Date: Thu, 11-Jul-85 17:50:22 EDT
Article-I.D.: brl-tgr.11514
Posted: Thu Jul 11 17:50:22 1985
Date-Received: Wed, 17-Jul-85 03:41:44 EDT
References: <18736@mgweed.UUCP>
Organization: Ballistic Research Lab
Lines: 10

> Remember one thing that MOST commercial stations using tone activated
> receivers forget: DISABLE THE TONE CIRCUITRY BEFORE TRANSMITTING.
> That is, except on the 440 MHz ham band, it is illegal to transmit on
> a frequency before monitoring it. You can't do this unless you revert
> to carrier squelch!
> 
This is why the mike "hook" switch disables PL when you pick up the
mike.

-Ron