Same experience. In midst of replacing a whole lot of coax that our coast
rain and salt spray got to, with head hung low looks like some dating back
to WWII surplus RG-8/U.
Don W7WLL
-----Original Message-----
From: K Dutson
Sent: Tuesday, March 31, 2015 12:40 PM
To: Markku Oksanen ; towertalk@contesting.com
Subject: Re: [TowerTalk] Loss of wet RG-213
My experience is two-fold.
1. When high power is applied, there is arcing;
2. With low power, swr is so high that the rig folds back to near zero.
73, Keith NM5G
Sent via the Samsung Galaxy Note® 3c, an AT&T 4G LTE smartphone
<div>-------- Original message --------</div><div>From: Markku Oksanen
<ww1c@outlook.com> </div><div>Date:03/31/2015 9:40 AM (GMT-06:00)
</div><div>To: Keith Dutson <kdutson@sbcglobal.net>,
towertalk@contesting.com </div><div>Cc: </div><div>Subject: RE: [TowerTalk]
Loss of wet RG-213 </div><div>
</div>Hi
Interestingly I can't find any figures for the loss!
I can imagine that high F this may be really bad but how about 28 MHz?
Markku
From: kdutson@sbcglobal.net
To: ww1c@outlook.com
Subject: RE: [TowerTalk] Loss of wet RG-213
Date: Tue, 31 Mar 2015 09:29:37 -0500
Water intrusion is a real killer at VHF and UHF, and a severe issue for
legal limit stations on HF. Lots of experience here with coax water
infusion. While somewhat expensive, the use of Heliax, connectors and
installation methods from Andrews is a real solution. Having these
installed by a professional is even better.
I am currently replacing all coax on my tower, and the only non-Andrews
components are RG-213 with silver plated Amphenol connectors,, properly
sealed against water intrusion, mostly for Yagi jumpers to Heliax.
73, Keith NM5G
-----Original Message-----
From: TowerTalk [mailto:towertalk-bounces@contesting.com] On Behalf Of
Markku Oksanen
Sent: Tuesday, March 31, 2015 2:53 AM
To: towertalk@contesting.com
Subject: [TowerTalk] Loss of wet RG-213
All
We had a very rainy fall last year and I noticed a signs of water at an
UHF
connector. The cable runs some 150 feet up the tower and and the water
must have been coming along the cable.NOW I have been trying to find
definitive numbers of estimated loss for a wet RG-213 at, say 28.5 MHZ.
For
some reason, no luck on the internet anyway. Although I intent to change
the cable, I would like to know what this does for the time being.
Thanks for the help!
MarkkuOH2RA/OG2A/WW1C
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