Modem-type chips for non-telephone channels

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Article #19270

#19270

From: John B. Nagle
Date: Tue, 14 Jun 1988 03:30

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      What simple chips or modules are available for data transmission
over a good-quality audio channel?  I'd like to get 15Kb or more, and
have an audio channel with about 15KHz bandwidth.  The link is simplex;
it's a telemetry system.  So systems with handshaking, cooperative
equalization, and retransmission are out.  This eliminates some of the
more exotic modem technologies, but then, at 1 baud per hertz, they
should not be necessary.

      Someone mentioned some new Motorola parts here recently, but I don't 
have the reference.  Did anyone catch that go by?

					John Nagle

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Path: arc1-ca.pugleaf.net!utzoo!attcan!uunet!lll-winken!lll-lcc!lll-tis!helios.ee.lbl.gov!pasteur!agate!eos!labrea!glacier!jbn
From: jbn@glacier.STANFORD.EDU (John B. Nagle)
Newsgroups: sci.electronics,rec.ham-radio
Subject: Modem-type chips for non-telephone channels
Keywords: modem demodulator
Message-ID: <17490@glacier.STANFORD.EDU>
Date: 14 Jun 88 03:30:43 GMT
Organization: Stanford University
Lines: 12