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References: [ +subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*\[TowerTalk\]\s+water\s+in\s+coax\s*$/: 16 ]

Total 16 documents matching your query.

1. [TowerTalk] water in coax (score: 1)
Author: <atrampler@att.net>
Date: Wed, 13 Feb 2008 12:28:03 -0600
OK...I did it...I kept saying, "I'll get some coax seal on that joint when..." Well, the ice storm hit before "when" hit. Does Coax dry? If not, is there a good way to figure out how deep the water h
/archives//html/Towertalk/2008-02/msg00124.html (6,714 bytes)

2. Re: [TowerTalk] water in coax (score: 1)
Author: "Wes Attaway \(N5WA\)" <wesattaway@bellsouth.net>
Date: Wed, 13 Feb 2008 14:24:24 -0600
When water starts dripping out into your shack you will know the answer. -- Wes Attaway (N5WA) -- 1138 Waters Edge Circle, Shreveport, LA 71106 (318)797-4972(office) -- 393-3289(cell) Computer Consul
/archives//html/Towertalk/2008-02/msg00125.html (8,421 bytes)

3. Re: [TowerTalk] water in coax (score: 1)
Author: "Roger (K8RI)" <K8RI-on-TowerTalk@tm.net>
Date: Wed, 13 Feb 2008 16:00:29 -0500
Not usually and it all depends. If the leak is at the top of a run it'll migrate a 100 feet in just a couple of days. If on the level it varies a lot and it depends on the type of coax. Bury flex? No
/archives//html/Towertalk/2008-02/msg00126.html (8,593 bytes)

4. Re: [TowerTalk] water in coax (score: 1)
Author: <john@kk9a.com>
Date: Wed, 13 Feb 2008 20:01:13 -0500
Some coax cables, such as 9913, are more susceptible to water problems than other cables such as 8267 RG-213, so there is no way to answer your question without knowing what cable you have and how ex
/archives//html/Towertalk/2008-02/msg00127.html (7,476 bytes)

5. Re: [TowerTalk] water in coax (score: 1)
Author: Martin Ewing AA6E <aa6e@ewing.homedns.org>
Date: Thu, 14 Feb 2008 09:57:01 -0500
The pros often pressurize their lines, I believe, to keep water out. Have amateurs done this? What would be involved? PL-259's aren't going to help. 73 Martin AA6E ___________________________________
/archives//html/Towertalk/2008-02/msg00136.html (7,690 bytes)

6. Re: [TowerTalk] water in coax (score: 1)
Author: Gene Smar <ersmar@verizon.net>
Date: Thu, 14 Feb 2008 09:19:32 -0600 (CST)
Martin et al: Commercial pressurization systems are pretty complex and cannot be used with just ANY coax. Air dielectric cables, typically used for QRO microwave sysems, require nitrogen under pressu
/archives//html/Towertalk/2008-02/msg00137.html (9,083 bytes)

7. Re: [TowerTalk] water in coax (score: 1)
Author: Gene Smar <ersmar@verizon.net>
Date: Thu, 14 Feb 2008 09:24:40 -0600 (CST)
TT: Sorry - it's dry, pressurized air and not nitrogen that is used in commercial pressurized coax systems. Even more complex when driers are included. My apologies. 73 de Gene Smar AD3F Martin et al
/archives//html/Towertalk/2008-02/msg00138.html (9,900 bytes)

8. Re: [TowerTalk] water in coax (score: 1)
Author: "Daron Wilson" <daron@wilson.org>
Date: Thu, 14 Feb 2008 07:34:39 -0800
Actually it is both. I've installed and serviced both. If you have a short run of not too large heliax such as 7/8 inch, pressurizing the feedline (and often the antenna depending on the design) with
/archives//html/Towertalk/2008-02/msg00140.html (11,146 bytes)

9. Re: [TowerTalk] water in coax (score: 1)
Author: Bob Nielsen <n7xy@clearwire.net>
Date: Thu, 14 Feb 2008 08:35:07 -0800
If you need high breakdown voltage (not usually an issue with 50 ohm systems), sulphur hexafluoride is sometimes used. _______________________________________________ _______________________________
/archives//html/Towertalk/2008-02/msg00144.html (7,673 bytes)

10. Re: [TowerTalk] water in coax (score: 1)
Author: Jim Lux <jimlux@earthlink.net>
Date: Thu, 14 Feb 2008 14:15:15 -0800
We have pressurized hardline at W6VIO, the JPL amateur radio club, but I suspect that we're not exactly amateurs in the sense you mean. In any case, there are fittings made for this kind of thing. I
/archives//html/Towertalk/2008-02/msg00152.html (8,964 bytes)

11. Re: [TowerTalk] water in coax (score: 1)
Author: Jim Lux <jimlux@earthlink.net>
Date: Thu, 14 Feb 2008 14:41:13 -0800
SF6 would probably only be useful if the runs were straight, and the coax large. Otherwise, the small variations in geometry would dominate over the increased dielectric strength of the SF6 (which is
/archives//html/Towertalk/2008-02/msg00154.html (9,407 bytes)

12. Re: [TowerTalk] water in coax (score: 1)
Author: <atrampler@att.net>
Date: Sat, 16 Feb 2008 21:43:14 -0600
Maybe the gods spared me, and maybe it was just more ice on the vertical. SWR back to normal. The reason I suspected water in the coax was that the roughly 5:1 SWR did not vary with frequency, and a
/archives//html/Towertalk/2008-02/msg00188.html (10,418 bytes)

13. [TowerTalk] Water in Coax (score: 1)
Author: Roger Parsons <ve3zi@yahoo.com>
Date: Wed, 25 Nov 2009 17:02:15 -0800 (PST)
I have a 300' run of LMR400 going up a tower - at the top are a 900MHz bi-directional amplifier and antenna. The system stopped working properly a while ago, and I eventually (duh) found that the pro
/archives//html/Towertalk/2009-11/msg00463.html (8,112 bytes)

14. Re: [TowerTalk] Water in Coax (score: 1)
Author: "Roger (K8RI)" <K8RI-on-TowerTalk@tm.net>
Date: Wed, 25 Nov 2009 21:06:47 -0500
Did you start at the bottom and work up? If so the problem should be at or just below the point where the shield turns shiny. It gradually turns gray with water and water *usually* works down the coa
/archives//html/Towertalk/2009-11/msg00464.html (7,595 bytes)

15. Re: [TowerTalk] Water in Coax (score: 1)
Author: Charlie Gallo <Charlie@TheGallos.com>
Date: Thu, 26 Nov 2009 09:39:40 -0500
...snip... This leads to the "dumb questions are the ones not asked" for me I'm having a new tower/antenns etc installed this spring, and the installers usually use LMR-400. I'm seriously thinking of
/archives//html/Towertalk/2009-11/msg00468.html (8,504 bytes)

16. Re: [TowerTalk] Water in Coax (score: 1)
Author: Mike <nf4l@nf4l.com>
Date: Thu, 26 Nov 2009 09:55:36 -0500
I'm using BuryFlex from Davis RF because of the tough, inert jacket(according to the literature). I haven't had it up long enough to tell anything about it yet. It has pretty much the same specs as L
/archives//html/Towertalk/2009-11/msg00469.html (8,505 bytes)

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