From: utzoo!decvax!harpo!eagle!mhuxt!mhuxj!cbosgd!npois!houxi!houxr!ehwest
Newsgroups: net.general
Title: sightless navigation
Article-I.D.: houxr.127
Posted: Thu Oct  7 14:09:28 1982
Received: Tue Oct 12 00:24:45 1982


Infrared transmitters could be placed in trees or lightposts
and could easily transmit say CVSD encoded speech over and
over again to announce where you are, etc.  Such a terminal
would cost less than $500 if the speech message could be kept
to less than 15 seconds. Power requirements would be less than 
a watt.  Receivers could also be made cheap because of the
simple (3 ics) techniques available to amplify the signal and
decode CVSD speech. ( See my article in Oct issue on CVSD).
Electronics Design Magazine.

But, who would pay for it all?

Earle West BTL (201) 561-7100