Xref: utzoo rec.ham-radio:16804 sci.electronics:9544
Path: utzoo!utgpu!jarvis.csri.toronto.edu!rutgers!cbmvax!grr
From: grr@cbmvax.commodore.com (George Robbins)
Newsgroups: rec.ham-radio,sci.electronics
Subject: Re: IC Info Needed
Message-ID: <9362@cbmvax.commodore.com>
Date: 17 Jan 90 13:41:42 GMT
References: <3678@cbnewsl.ATT.COM>
Reply-To: grr@cbmvax.commodore.com (George Robbins)
Distribution: usa
Organization: Commodore, West Chester, PA
Lines: 28

In article <3678@cbnewsl.ATT.COM> jim@cbnewsl.ATT.COM (james.a.malcolm) writes:
> 
> I am going to build a PLL based Subsidary Carrier Authorization (SCA)
> detector based on the NE565 PLL.  When I went to buy the IC, all
> the dealer had was an LM565CN.  I don't have, and haven't been able
> to find, the data sheet for this chip.  Could someone look it up
> and tell me if it has the same pinouts as the NE565?  

As the next 100 people will say...it's the same chip, just a different
manufacturers designation (NE=Signetics,LM=National).

> PS. I plan on using the circuit that appears in the Radio Amateurs
> Handbook (Chapter 18 in the latest version).  The alternative is
> the circuit in the Signetics data book.  Has anybody built and
> used either of these circuits?

I've built the Signetics one.  It works, but unless you live in NYC
or somewhere similar, you'll only find a few stations running SCA and
most of them really aren't very intersting...

Also, you need to get into the pre-decode audio in your FM reciever,
which may or may not be easy...unless you have a truely ancient reciever
with a composite out jack...

-- 
George Robbins - now working for,	uucp: {uunet|pyramid|rutgers}!cbmvax!grr
but no way officially representing	arpa: cbmvax!grr@uunet.uu.net
Commodore, Engineering Department	fone: 215-431-9255 (only by moonlite)