The CH751 key is a generic cabinet key used by many manufacturers including
Square D, Soundolier, and other non-radio manufacturers. The 2135 and 2553 are
pure Motorola, reserved by Chicago Lock (the manufacturer) for only Motorola.
The BF-10A key is pure GE as is the GE1000 key. THere are
Just to clarify what was said before about AGM batteries, when an AGM battery
vents, it's because something is wrong. Either it was charged too fast or
discharged too fast or it is in a condition called thermal runaway, which
occurs
when a battery is overheated. In an ordinary scenario, it is
border zone (north of line A).
If you are a unit of the local government, then you need to have that local
government agency apply for the channel you use. Who is the sponsoring entity?
In any case, get with me off-line and I will be happy to point you in the right
direction for licensing.
Doug
east they have over 6 feet in the
mountains.
I could use some sun for a while!
Doug Dickinson
KC0SDQ
There were two basic repeat modes used in the Medical Telemetry systems. The
Med 1 through 8 and the two dispatch channels (now known as Med 9 and 10) are
duplex channels. The Orange Box and the Apcor (both Motorola) and some others
were duplex hand carried units. I will focus first on the
I do remember a little about the radios they used on the series. The Orange
Box duplex paramedic radio was the original Motorola adventure into the medical
telemetry function. It consisted of (all inside the orange box case) an HT220
used as an exciter, and a PA out of a micor mobile low power
I do remember a little about the radios they used on the series. The Orange
Box duplex radio was the original Motorola adventure into the medical telemetry
function. It consisted of an HT220 used as an exciter, and a PA out of a micor
mobile low power unit. The receiver was straight out of the
That appears to be a Mocom 70 dash mount radio. They did manufacture some and
they were often found in things like Cement Trucks and other large heavy
machinery with space to put a big radio up front. They had to have everything
torqued down inside very tightly as the shaking in that
I too saw the show and a couple of comments:
1) Hard Hats are required by OSHA - no way around that.
2) $14/hr is common for non-union climbers. Double that for Union. Also, these
small contractors (and most of them are ) do not provide health insurance and
often they don't even keep up with
I still don't understand why people object to two repeaters - properly designed
- cannot share the same channel? With separate PL tones and limited hand time,
they can complement each other.
The use of a coordinator that assigns a channel based on antiquated
criteria is still providing
I like the idea of using some of the old brick outhouse type radios. The
MasterII and Micor are about as bulletproof as a radio can get.
Another idea that I saw on the web is to use a couple of portable radios
(i.e. MT1000 or P200 Motorola) radios as the Receiver and the exciter and then
I vote for doing either - whatever works for you!
The Micos is a fine radio - no doubt. It is also a
very old radio. The only way to get parts is to scrap
an old micor. Just about the same for the SRA series
syntor. Both have mechanical frontends and can do a
great job, but the syntors DO require
You CAN run a Micor base station on 12VDC, but you
have to arrange a switchover from the 12V supply to
the regulator board in the Micor power supply. As was
said, you need 9.7 or so volts to run much of the
control and logic functions and the power supply
derives that from 12V. You need to make
Try this link:
http://www.westmountainradio.com/SuperPWRgate.htm
Doug
The best arrangement I have seen so far is the Powergate PW40S which has the
built-in 3 stage charger. I have used them and they are really good with a zero
time switchover so none of the little electrons in the controller get confused
and reset or worse, lockup the controller. It also charges
You know, there is no requirement to kil code from the airways. Some people are
talking like this is the end of things. NOTHING says there won't be any more
code, it is just relegated to the other obsolete and dusty vestages of the
amateur radio world. I know there are a lot of folks that enjoy
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