Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.1 9/27/83; site hplabsc.UUCP Path: utzoo!watmath!clyde!burl!ulysses!mhuxr!ihnp4!houxm!whuxl!whuxlm!akgua!sdcsvax!sdcrdcf!hplabsc!labelle 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