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Old February 11th 09, 09:05 PM posted to rec.radio.amateur.antenna
JB[_3_] JB[_3_] is offline
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First recorded activity by RadioBanter: Apr 2008
Posts: 543
Default Velocity Factor of Coax

The 2m people, most business PLMR and the Cops don't get it so they
complain
about jammers so you get irate service calls. But you can't talk to them
because if you talk technical, they cover their ears, scream LALA LALA!!
accuse you of lying, and they won't pay for the cure anyway (remember, if
you have to think about the answer, you're lying).


Heh. You haven't met the senior hardware guy (Scott N6NXI) on our
2M/220/440 repeater project. He's the staunchest opponent of using
foil/braid cable on a repeater that you're ever likely to meet, and
insisted on all of our stuff being done to solid commercial-grade
standards (circulators, bandpass filters on the auxiliary radios,
etc.). Most of the cables inside the rack are custom-cut/routed .25"
heliax.

It was a lot of work (and more money) but it has paid off in
reliability. We've got 3 repeaters and their duplexers in a single
rack, right next to one another, and no crosstalk or intermod or
desense problems... and we share the site with a powerful
paging-service transmitter and a bunch of public-service radio gear.

Say R56 and it usually covers everything that matters. Check this out. Use
to take care of a bunch of UHF Micors he

http://eecue.com/images_archive/eecu..._Antennas.html
(no i didn't take the picture)