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Re: [TowerTalk] Resistance of RG-8 cable?

Subject: Re: [TowerTalk] Resistance of RG-8 cable?
Date: Fri, 11 Dec 2009 10:19:41 EST
List-post: <">>
Also, having a non-contaminating jacket is important for long life.   Cheap 
CB type cables don't usually have a ncv jacket and the loss begins  
deteriorating the day it is installed and exposed to uv light from the  sun.
One famous cable, Belden 8214, has wonderful low loss when new but does not 
 have a ncv jacket. It suffers the same fate as cheap cable in a few years. 
 (personally been there, done that)
73, Gerald K5GW
GM, Texas Towers
In a message dated 12/11/2009 7:09:09 A.M. Central Standard Time, writes:

As long  as the coax is not waterlogged and the braid is not corroded there 
will be  little to no change in loss factor for old coax - especially the 
solid  polyethylene center insulator...  It may shrink slightly in diameter  
dropping the surge impedance a couple of ohms (you won't even notice) and it 
 will get stiff... I had a couple of jumpers still in use in the shack from 
 nearly 50 years ago that were like a piece of board...   Usually a new  
set of PL-259's and they are good for another 50 years... I tossed them out  
just recently because they were too stiff to move around, but they still took 
 1500 watts without complaint...

denny / k8do


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