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[TowerTalk] Coax Rating

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Subject: [TowerTalk] Coax Rating
From: (Joe Reisert)
Date: Thu, 01 Mar 2001 10:33:08 -0500
Hi Bob,

Per the ARRL Antenna Book, the approximate power rating of RG8X with 1:1 
VSWR and 40 degrees C. ambient is 1830 Watts on 160 meters, 840 Watts on 40 
Meters and only 360 Watts on 10-meters. Hams are notorious for exceeding 
manufacturers ratings. Given the small size of RG8X, the power ratings seem 
to be in line of what I would expect. Furthermore, given it's rather soft 
foam, I wouldn't want to bend it very much!


Joe, W1JR

At 06:16 AM 3/1/01 -0600, Bob Alexander wrote:
>Hi Ted,
>My RG Cable Guide is so old it does not list RG8X.  However, for RG8 and 8A
>it says to use
>  If weight is a concern, why not use a half wavelength of ladder line from
>the antenna feed point to a place near the ground where you can connect it
>to a coax via a 1:1 balun.  You could also use ladder line all the way to
>the shack and a tuner.
>73, Bob, W5AH
>-----Original Message-----
>Am planning on trying to put up 3  1/2 waves on 40mtrs. and wonder if
>anyone knows the maximum power that RG8X will handle on a relatively
>short run less than 100 feet....I know I would probably be better off
>with something like 213 or the like but am concerned with the weight
>factor....Anyone had any major meltdowns using the lighter feed line.
>Ted    K9HUH
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