Newsgroups: comp.robotics
Path: cantaloupe.srv.cs.cmu.edu!rochester!udel!news.mathworks.com!newshost.marcam.com!charnel.ecst.csuchico.edu!waldorf.csc.calpoly.edu!zeus!csheel
From: csheel@harp.aix.calpoly.edu (Catherine Anne Sheel)
Subject: Re: Digital Communication
Message-ID: <1995Mar01.153403.153244@zeus.aix.calpoly.edu>
Sender: news@zeus.calpoly.edu
Organization: California Polytechnic State University, San Luis Obispo
References: <1995Feb28.234122.24620@tcel.com>
Date: Wed, 01 Mar 1995 15:34:03 GMT
Lines: 13

In article <1995Feb28.234122.24620@tcel.com> buff@internode.net (Mark Leonard) writes:
>-Are there commertial products availiable for digital radio communication
>over 500 feet, from one RS-232 on one computer (386 based) to another
>RS-232 on another.
>-Are there any frequency broadcasting limitations?  Is it illegal to
>transmit on certain frequencies?

There are commercially available radio modems, but I don't think they're
cheap.  Also, the FCC is quite specific about what frequencies you 
and signal strength you use to intentionally (or unintentionally) broadcast.
Have you considered using standard Radio Control equipment--that's digital
radio communication and can be interpreted quite easily by computer.

