[TowerTalk] Coax...braid "coverage" at HF.
jim at audiosystemsgroup.com
Tue Jan 11 11:28:06 EST 2005
On Tue, 11 Jan 2005 08:41:13 -0500, john.brewer at us.schneider-
>There's frequently reference to "braid coverage" in regards coax
Unless I'm missing something, the primary issue with braid coverage
is leakage at VHF and UHF. Example: you've got an MATV or CATV
system -- when operating close to VHF and UHF transmitters, you
don't want the transmitters getting in, and everywhere, you don't
want your cable signal leaking out. This requires VERY well shielded
cable, and careful attention to every single connection point.
There are, of course, other issues with the shield of coax -- power
handling, what happens at baseband (video wants copper braid), does
it need to be flexed in use, etc.
Jim Brown K9YC
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