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From: wjc@ll-vlsi (Bill Chiarchiaro)
Newsgroups: net.ham-radio
Subject: Re: Common carrier for remote control
Message-ID: <1103@brl-tgr.ARPA>
Date: Mon, 30-Dec-85 09:59:29 EST
Article-I.D.: brl-tgr.1103
Posted: Mon Dec 30 09:59:29 1985
Date-Received: Wed, 1-Jan-86 04:13:13 EST
Sender: news@brl-tgr.ARPA
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Why not use an amateur band for the link?  The MIT Radio Society (W1MX) has
been considering a project similar to yours.  W1MX is a fantastic transmitting
location for 160 meters, but the noise level is so high in the city that you
can hardly hear anything.

We've been thinking about erecting a Beverage (or two) at MIT Lincoln Laboor-
atory's Millstone Hill site in Westford, MA.  This site is a quiet, wooded
location about 15 miles northwest of Cambridge.  Our plan would be to upconvert
the entire 160 band to either 440 MHz or 1260 MHz and link it back to
Cambridge.  With this plan, no remote control (except possibly for antenna
switching) would be required.  If the the 160 band is FM'ed onto the link,
id'ing could be done by low-level AM (thereby avoiding annoyance for the
operator at the receiving end).  I believe this approach is entirely within
the spirit of the FCC's amateur rules, and would be classified as auxiliary
operation.

An interesting by-product of this scheme is that anyone who could hear the link
could, by building his own down-converter, take advantage of the quiet antenna.

Bill
N1CPK