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From: labelle@hplabsc.UUCP (WB6YZZ La Belle)
Newsgroups: net.ham-radio
Subject: Another SCA adapter
Message-ID: <2464@hplabsc.UUCP>
Date: Fri, 8-Mar-85 17:16:23 EST
Article-I.D.: hplabsc.2464
Posted: Fri Mar  8 17:16:23 1985
Date-Received: Sun, 10-Mar-85 07:46:23 EST
Organization: Hewlett Packard Labs, Palo Alto CA
Lines: 9



     Another SCA decoder can be made using the LM3089 or 3189 "fm if
subsystem". It contains IF stages quadrature detector, afc, agc,squelch
and first audio stage. It can accept uV input level signals so low
drive from your tuner is no problem. Simply add a 67kHz tuned input
and quad det. circuit, and it's ready!

                   GEORGE     WB6YZZ