[TowerTalk] Coax...braid "coverage" at HF.

Jim Brown 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-
electric.com wrote:

>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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