[TowerTalk] Rotor loop coax choices ?

[Jorge Diez - CX6VM]

Hello

BuryFlex by Davis RF is a great choice for rotor loops

73,
Jorge
CX6VM/CW5W

-----Mensaje original-----
De: TowerTalk [mailto:towertalk-bounces at contesting.com] En nombre de
TexasRF--- via TowerTalk
Enviado el: jueves, 11 de junio de 2015 05:54 p.m.
Para: jim at audiosystemsgroup.com; towertalk at contesting.com
Asunto: Re: [TowerTalk] Rotor loop coax choices ?

Hi Jim, it is not widely known but Belden 8214 does not have a
non-contaminating jacket.  I just confirmed it on the 8214 data sheet on
their website to make sure I remembered it correctly.
 
Too bad as it is a very nice coax otherwise.
 
73,
Gerald K5GW
 
 
 
In a message dated 6/11/2015 3:37:18 P.M. Central Daylight Time,
jim at audiosystemsgroup.com writes:

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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