[TowerTalk] Bumps in coax

[Thomas F. Giella NZ4O]

Hi all,

During my regular inspection of my coaxial cables, I noticed 2 or 3 hard
bumps along the length of the cable.  These bumps or pimples, do not break
through the outer jacket, but look as if they are on the verge of doing so.
These bumps, or whatever, are small, about 1/8th inch or so.   Any idea what
they are, or what causes them?

73 Buddy WB4M

Buddy last year I bought 100 feet of allegedly high quality RG-8X coax from 
a reputable manufacturer/supplier. When I unwound it on the ground it had 
allot of the bumps as you described. I cut some of the coax open and found 
that the soft foam insulation around the center conductor had kink like 
twists in it.

73 & GUD DX,
Thomas F. Giella, NZ4O
Lakeland, FL, USA
nz4o at arrl.net

NZ4O Amateur & SWL Radio Autobiography: http://www.nz4o.org