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[TowerTalk] Fwd: Life expectancy of RG-213

Subject: [TowerTalk] Fwd: Life expectancy of RG-213
Date: Fri, 27 Aug 2010 13:59:25 -0400
List-post: <">>
 The conductor and shield are silver plated. Silver reach with sulfur that 
eventually reaches the inside. Silver-sulfide is black.

Hans - N2JFS




-----Original Message-----
From: Tom Osborne <>
To: Towertalk <>
Sent: Fri, Aug 27, 2010 11:31 am
Subject: Re: [TowerTalk] Life expectancy of RG-213

Hi Don

What makes coax turn black anyway??

I was checking some feedlines here and some off-brand RG8X I have and the 

center conductor and the sheild turned both black.  It was not just at the 

ends but a long way back from the end.

It doesn't look like it was wet.

 Looks like I'll have to get rid of a bunch of it.  73



Beg, borrow, buy a TDR and look at it that way.

Most coax will last many more years than people believe.

Problems occur from moisture ingress, but, if trimmed when necessary,

will do just fine.

My rule of thumb is:  If the shield is shiny, it's OK.

I have 100's of feet of it ready to put into use this Fall/Winter season.

Now all I need to do is get the towers/antennas up!

Good luck






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