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Old July 16th 07, 07:22 PM posted to sci.electronics.basics,rec.radio.shortwave,rec.radio.amateur.antenna,alt.cellular.cingular,alt.internet.wireless
Jeff Liebermann[_2_] Jeff Liebermann[_2_] is offline
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First recorded activity by RadioBanter: Jun 2007
Posts: 1,336
Default How I would like to change the cell phone industry [was AM electromagnetic waves: 20 KHz modulation frequency on an astronomically-low carrier frequency]

DTC hath wroth:

Jeff Liebermann wrote:
Egads. I'm cleaning house and found a large box of 40 year old
Motrash control heads and cables. Want some junk?


Slacker...I tossed out all my old Moto stuff years ago. Last time I played
with the Motorola line was around the Micors came out. i used a few of them
for tower top UHF repeaters


The local hams still have ancient junk pretending to be repeaters and
such.
http://www.LearnByDestroying.com/k6bj/
I built most of it out of Micor mobiles and base stations. Since the
Micor stake pin connectors are chronically intermittent, there's a
large rubber hammer in each rack to bang on each radio to reseat the
connectors.

Since no sane person keeps such old parts around, I get to stock old
radios and pieces at my house. When the local comm shop cleaned out
their ancient Motorola parts pile, I ended up with most of their old
parts. I think it's time for a general purge, which means either eBay
or the scrap metal recyclers.

What I find amusing is that many police and fire departments rebuild
antique or vintage police cars and engines. They eventually want a
genuine Motorola twin coffin or 80D radio for the vehicle. I've
supplied about 4 of these radios (working) for various projects. The
first step is to spray the crumbling rubber insulated wiring with
clear acrylic to prevent further deterioration. Getting the radios
working is fairly easy as I have all the old test sets and some docs.
The fun part for me is watching the current crop of comm techs trying
to install the monster case in the vehicle. What do I do with all
this big fat cable is usually the first question.

--
Jeff Liebermann
150 Felker St #D
http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558