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From: egb@mitisft.Convergent.COM (E. G. Bradford )
Newsgroups: sci.electronics
Subject: Re: Library Book detectors
Message-ID: <199@mitisft.Convergent.COM>
Date: Thu, 14-May-87 16:30:01 EDT
Article-I.D.: mitisft.199
Posted: Thu May 14 16:30:01 1987
Date-Received: Sat, 16-May-87 12:09:01 EDT
References: <146@illusion.UUCP> <868@oliveb.UUCP> <1726@kitty.UUCP> <667@stride.Stride.COM>
Organization: Convergent Technologies, San Jose, CA
Lines: 12
Summary: Stock quotes over the FM radio frequency


I have looked in various old issues of Radio Electronics
and asked a few friends and no one seems to know
the answer to this question.

What is the technology that systems like Quotrek use for
broadcasting real time stock market quotations over the
FM radio frequency? I assume it a subcarrier of a local
station, but can guess no further. Does anyone know how
this is done?

		Ed Bradford