[TowerTalk] Rotor loop coax choices ?

Jim Brown jim at audiosystemsgroup.com
Thu Jun 11 16:36:50 EDT 2015


On Thu,6/11/2015 1:16 PM, Mark Spencer wrote:
> I have nagging doubts about using cables with a solid foil shield for a rotor loop.

I would share your concern.

> I do like the idea of double shielded cables so RG213, RG 8 etc are off the table for now.

I wouldn't worry about "double-shielding," but rather the quality of the 
shield. Look through the Belden catalog for an RG8 or RG213 with a 
robust copper braid shield and stranded center. Look at 8237, 8268, 
8214. or 9251. All are 97% shield coverage. Check out vendors like 
Markertek. 9251 has non-contaminating jacket.  8214 is #11 center; the 
others are #13.

You don't need a lot of coax for the rotor loop, so cost is hardly a 
factor -- I'd be more concerned about finding someone to sell you short 
lengths. :)

73, Jim K9YC


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