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Re: [TowerTalk] RG-8X

Subject: Re: [TowerTalk] RG-8X
From: K8RI <>
Date: Tue, 17 Apr 2012 01:59:53 -0400
List-post: <">>
On 4/16/2012 11:40 PM, Gene Fuller wrote:
> Has anyone had experience with "Browning BR-240 LOW LOSS 50 ohm" cable ?

I would guess that BR-240 is a knock off of CNT-240 and LMR-240 and the 
only relation to 8X would be size.  8X is very flexible and that is one 
of its primary attributes.
CNT-240 and LMR-240 have a solid center conductor, thin braid over foil 
shield, foam dielectric, and are very stiff. The braid is very fragile 
requiring care when installing connectors. I've used the LMR and CNT 240 
cables to feed a 40 meter dipole with the legal limit and a very low SWR 
(max of 1.3:1)  The center conductor broke often with the coax swinging 
in the breeze between the sloper and the tower.  RG-8X with single or 
double braid over foil worked well with no breaking. Bandwidth was very 
limited on 75 at the legal limit with 8X. I did not try any of the 240 
versions.  Myself, I'd stick with a couple hundred watts and put a tuner 
out by the feed point for that coax of 75.

>   Wondering how much power it will take on 75/80m with 3:1 SWR and coming up 
> with very little online.

Check with Davis RF  I doubt it will handle 
much with 3:1, but have never tried.  I'm not even going hazard a guess 
as to its limits.  I much prefer the double braid over foil on 8X over 
either of the 240s I tried.  I think you will find the small cables have 
a lot of resistive loss on 75 and 160.


Roger (K8RI)

>   I've got a bit of it and at this point I conclude that it's relatively 
> inexpensive stuff, probably from  China - appears to be solid copper center 
> conductor, minimal copper braid with aluminum foil, quite heavy, stiff 
> jacket,...........
> Thanks for any input,
> Gene / W2LU
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