[BC] The answer...
Bill Brister
bbrister
Mon Dec 26 17:04:51 CST 2005
Ricochet, the wireless ISP, used a system like this. Ricochet went out of
business around 2001. One of their transmitters was on a light pole in my
neighorhood up until about a year ago when a development removed it. I was
on Ricochet and it worked real well. They just could not sustain the
business. Maybe someone changed the frequencies of some of their old
transmitters.
Bill B.
Houston, TX
-----Original Message-----
From: broadcast-bounces at radiolists.net
[mailto:broadcast-bounces at radiolists.net] On Behalf Of WFIFeng at aol.com
Sent: Monday, December 26, 2005 4:54 PM
To: broadcast at radiolists.net
Subject: Re: [BC] The answer...
In a message dated 12/25/2005 10:03:34 PM Eastern Standard Time,
daaugies at juno.com writes:
> Those strange transmitters on the streetlights...
>
> Those might be part of an electric meter reading network. The units on
> the streelights are base stations and use some sort of spread spectrum to
> communicate with the electric meters and with each other. I thought they
> worked at 800 MHz though.
It could have also been an early attempt at a TIS service, employing
multiple
low-power transmitters to cover a given area.
Some time ago, someone provided a link to a company that sells these kinds
of
low-power "repeaters" to permit Part 15 compliant emitters to be placed such
that many miles of road can be covered, or a whole town, etc. The major
drawback of the system (IMHO) is that it uses an ISM freq in the 13Mhz band
(NBFM)
to relay the station audio to the Broadcast-Band repeaters. (AM or FM.) They
were not cheap.
I wonder if these streetlight units we are discussing are remnants of an
operation like this. Apparently, it went belly-up long ago and the
transmitters
were all just left in place to rot.
Willie...
_______________________________________________
This is the BROADCAST mailing list
To send to the list, email: broadcast at radiolists.net
For sub changes, archives and info on this other lists:
http://www.radiolists.net/
More information about the Broadcast
mailing list