| I've worked for the same radio shop for 22
years. The big picture above is my main work station, and the smaller ones
are of the service monitors I use. These units cost much as much as the
average new car. The one on the left is a CT Systems 5100S, and is about
$21,000 new.
After building major systems like the State of Oregon
Emergency Alert System, rewiring a classic truck or a hotrod is fun stuff.
I was destined to be a radio man... my birthday is on
October 4th. That's 10-4!!
We've also done quite a bit of wind and solar powered
systems on radio sites. I've also converted a couple of generators to run
on propane fuel. It's interesting stuff to play with! The unique thing
about remote radio sites, is dealing with giant Black Widow spiders. I've
always looked for the 'Widow who seems to be hanging above the entry door,
ready to drop on my neck. We've also noticed that there's usually only
one "queen" of the site. Any other rival spiders just get eaten, we suppose.
Some job links from our radio Service
Company website:
The City of
Kennewick Traffic Light Telemetry System
Each traffic light control box has a UHF radio which "talks" to the
main radio site on top of a mountain. The control signals are then beamed
down a T-1 microwave link into a main frame computer at City hall. The
computer coordinates all the lights at once. There are also cameras above
some intersections, and software looks for moving vehicles (otherwise known
as pixelated "blobs") and adjusts the timing cycles accordingly. This system
is still being installed, and we've been working on it for months. There's
well over 60 intersections in this system.
The Oregon State
Emergency Alert System (TAR stands for Tone Alert Radio)
Ever been listening to music, then hear a funny sounding buzzing on
the radio followed by a loud tone, then: "This is a test of the emergency
broadcast system..." The buzzing is a set of FSK (Frequency Shift Key)
tones called a FIPS code that opens weather monitors in certain areas,
and other alert radios such as schools and hospitals have for emergencies.
The obnoxious tone that follows the buzzing noise is 1,000 hz and 1,400
hz mixed together, and is designed to be noticed even if your radio or
TV is turned down. This system has several radio site which all link together
via microwave and UHF. Four dispatch centers in Oregon state are able to
take over control of the NOAA weather radio system and Emergency Broadcast
System in the event of "an actual emergency." At least we can hope all
we ever hear are tests!
The Emergency Dispatch
Center in Pendleton Oregon
The little "shed" at the base of the tower, is actually made of 3/4"
thick steel plating. It's about the size of a typical garden/lawnmower
shed, but weights over 30,000 lbs.! That big battery with the orange top,
would run your boat's trolling motor for about 6 months! It's 40 inches
long, and weights over 600 lbs. This new jail/sheriff station/dispatch
center is at the West end of Pendleton, Oregon.
Benton and
Franklin County Transit System
A fleet of city transit buses that have data terminals. Each driver
chooses a "canned" message from a selection in the data terminal. The dispatchers
can keep track of each bus on big 21" monitors. A printer logs all incoming
messages from buses. If the driver needs to talk to the dispatcher, he/she
pushes a "voice request" and when it's granted, picks up and uses a telephone
handset. Route information is also sent to each bus via the data terminals.
This system all but eliminates voice use on the radio channel. Dial-A-Ride
units are used mostly for handicapped people, and are sent directly to
homes and places people need to go, much like a taxi service. Click on
the 'Installations' button for pictures of the buses and installed data
radios. |