Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!zaphod.mps.ohio-state.edu!swrinde!elroy.jpl.nasa.gov!lll-winken!hpuplca!jeff
From: jeff@hpuplca.nsr.hp.com (   Jeff Gruszynski  )
Newsgroups: sci.electronics
Subject: Re: SCA Tuner
Message-ID: <12780002@hpuplca.nsr.hp.com>
Date: 13 Apr 91 00:10:14 GMT
References: <1991Apr12.195637.25132@uncecs.edu>
Organization: Hewlett-Packard Pleasanton Ca. Sales
Lines: 24

/ hpuplca:sci.electronics / crisp@uncecs.edu (Russ Crisp) / 12:56 pm  Apr 12, 1991 /

* Hello all.
* 
* I'm interested in building an SCA tuner to browse through this
* service on FM broadcast stations in my area.  Anyone know of
* a kit or an article that would get me going on this?  
* 
* Thanks!
* Russ Crisp  KA4UXZ
* Western Carolina University
* ----------

	Primary SCA is an FM signal @ 67KHz w/ 15KHz Max Deviation sitting 
above (frequency wise) the 38KHz L-R DSB signal.  I seem to remember *old* 
National Semiconductor Linear databooks having an SCA application example 
on the LM565 entry.  I also seem to remember SCA being covered by the ECPA.
(i.e. You're not supposed to listen).  Anyone with a better memory out
there?


Jeff Gruszynski
Santa Clara Sales
Hewlett-Packard