There is FAR less open air space between the outer jacket, shield and
dielectric of 213 than in the center space of 9913. The temp change on 9913
will create quite a vacuum. 213 will not create a vacuum of any consequence.
The shield WILL wick water, tho.
As to the stories from 9913 users who have escaped, fine. Consider yourself
lucky. It's like walking across the street against the light. Not everybody
gets struck by a car. The fact that 100% don't get struck by a car still
doesn't make it a good idea. Still sets you up for the Darwin award.
73, Guy
----- Original Message -----
From: "Paul Christensen" <paulc@mediaone.net>
To: <towertalk@contesting.com>
Sent: Thursday, December 20, 2001 11:59 AM
Subject: Re: [TowerTalk] 9913 Reliability
>
> > I have seen both 9913 and 213 that was discolored due to moisture and I
have
> > seen both look like new after several years. It would seem the water
issue
> > is a problem for either cable.
>
> Yes, the water issue is the same concerning the point(s) of
connectorization. It's what must take place after the cable becomes
> impregnated with water vapor through connector leakage: On RG-213 or
LMR-400, the problem can oftentimes be severed several inches
> from the connector and a new connector attached. On 9913, once moisture
enters, it must purged of all moisture to become effective
> again. Unless you have compressed nitrogen or an automatic dehydration
device lying around, purging long lengths of 9913 can be
> very difficult and time-consuming due to significant back pressure: the
spiral air dialectic impedes the air flow. Take 100-feet
> of 9913 and try blowing into it. On a final note, LMR-400 can be
purchased as a "flooded" version whereby silicon gel effectively
> serves as a protective layer between the jacket and the shield in the
event light severing of the jacket occurs.
>
> -Paul, W9AC
>
>
>
> AN Wireless Self Supporting Towers are now available! Windloading tables,
> foundation diagrams and charts, along with full details are now at the
> AN Wireless Web site: http://www.ANWireless.com
>
> -----
> FAQ on WWW: http://www.contesting.com/FAQ/towertalk
> Submissions: towertalk@contesting.com
> Administrative requests: towertalk-REQUEST@contesting.com
> Problems: owner-towertalk@contesting.com
>
>
AN Wireless Self Supporting Towers are now available! Windloading tables,
foundation diagrams and charts, along with full details are now at the
AN Wireless Web site: http://www.ANWireless.com
-----
FAQ on WWW: http://www.contesting.com/FAQ/towertalk
Submissions: towertalk@contesting.com
Administrative requests: towertalk-REQUEST@contesting.com
Problems: owner-towertalk@contesting.com
|