[TowerTalk] Coax Resiliency

[Steven Gehring]

Hi Michael,

You could cut off a couple of feet from each end and still be ok, I believe.
You could also check the cable with a megger, a piece of test equipment that
measures feed line insulation resistance.  If the insulation resistance
stays pegged (max megohms) on one of these while you crank it's built in
high voltage generator, your cable is good (indicating that water and
contaminant intrusion hadn't taken place).  Oh, you'd connect the megger to
the center conductor and the shield and then test it.

I'd imagine some amateur in your local ham club or vicinity has a military
surplus megger they would let you use.

GL,  

Steven J. Gehring, KZ9G
Bothell, WA  98012
E-mail: kz9g at arrl.net


-----Original Message-----
From: towertalk-bounces at contesting.com
[mailto:towertalk-bounces at contesting.com] On Behalf Of Michael Hatzakis, Jr
Sent: Tuesday, September 16, 2003 5:07 PM
To: towertalk at contesting.com
Subject: [TowerTalk] Coax Resiliency



Cut off 10 foot sections of LMR-400 Ultraflex after putting up tower.  I
left them outside for two weeks during which time there was a heavy rain.  I
want to use the peices to make 3-5 foot patch cords.  Should I use them or
will water have degraded them or is the length so short that it doesnt
matter?  

Michael  K3MH



Michael Hatzakis, Jr MD 
Physiatrist, Treating Individuals with Neuromuscular Disabilities 
Consultant, Information Technology Based Health Care Solutions

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