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From: Zieres.wbst@XEROX.COM (Gary)
Newsgroups: mod.telecom
Subject: Connecting a phone line to a stereo
Message-ID: <8611250934.AA27195@ucbvax.Berkeley.EDU>
Date: Tue, 18-Nov-86 11:27:40 EST
Article-I.D.: ucbvax.8611250934.AA27195
Posted: Tue Nov 18 11:27:40 1986
Date-Received: Tue, 25-Nov-86 20:42:40 EST
Sender: daemon@ucbvax.BERKELEY.EDU
Organization: The ARPA Internet
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Approved: telecom@xx.lcs.mit.edu

Can anyone give me a circuit for connecting a phone line to broadcast
over a stereo system?  I only want to use the stereo to amplify and play
over the stereo in a "one way" mode.  I know radio shack has a device
for recording into a tape player (costing over $20, which probably
consists of a 50 cent isolation transformer), but I would like to build
one cheaper.  I think that simply an isolation transformer would work,
but I don't know the ratio (or input impedance).  Any of you telephone
jocks out there that could give me a suggestion?

- Gary