[TowerTalk] Identify Hardline

Dan Hearn dhearn at air-pipe.com
Wed Jun 18 20:20:01 EDT 2008


Tnx Gene: That all makes sense. Radiax for radiating coax which,  I suspect, has openings in the metal outer and I bet the waxy stuff is to keep moisture from penetrating the dielectric from outside. Fortunately I only gave $50 for it and it is probably worth something near that for scrap. 
73, Dan, N5AR 

-----Original Message-----
From: Gene Smar [mailto:ersmar at verizon.net]
Sent: Wednesday, June 18, 2008 4:55 PM
To: Dan Hearn; T talk
Subject: Re: [TowerTalk] Identify Hardline

Dan:

     Radiax is Andrew's version of leaky coax.  It is designed to radiate deliberately throughout its entire length.  It is used in such places as transportation tunnels and ceiling cavities in buildings to bathe the area in RF that would otherwise not penetrate from outside.

BOTTOM LINE:  Not a good material for usual and customary Amateur use.


73 de
Gene Smar  AD3F



From: Dan Hearn <dhearn at air-pipe.com>
Date: 2008/06/18 Wed PM 07:30:51 EDT
To: T talk <towertalk at contesting.com>
Subject: [TowerTalk] Identify Hardline

I picked up a roll of hardline  with the following label.  84147 Andrew
Radiax TMRX5-1R Coaxial Cable.  It appears to be 7/8 stuff. There appears to
be some sort of waxy material between the OD of the copper outer and the
plastic covering. At least, that is what I find at the ends of the 250 ft
piece. I plan to try a 50 ohm termination and measure the loss soon.  Any
ideas?
73, Dan, N5AR
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