- 1. [TowerTalk] BLACKENED BRAID? (score: 1)
- Author: "K0DAN" <k0dan@comcast.net>
- Date: Mon, 13 Jun 2011 11:39:26 -0500
- Seems I saw a post here within the last year that diagnosed the cause of blackened copper shield? My case: I have a buried run of Cable Experts RG213/U Mil Spec, supposedly good for direct burial. It
- /archives//html/Towertalk/2011-06/msg00083.html (8,628 bytes)
- 2. Re: [TowerTalk] BLACKENED BRAID? (score: 1)
- Author: K8RI on TT <k8ri-on-towertalk@tm.net>
- Date: Mon, 13 Jun 2011 12:56:10 -0400
- IIRC Copper Oxide is black. Sulfide (fertilizers and atmospheric crap are *usually*green). Water varies depending on what's in it. Cut the jacket back until the braid is clean and shiny copper. Oxide
- /archives//html/Towertalk/2011-06/msg00086.html (9,620 bytes)
- 3. Re: [TowerTalk] BLACKENED BRAID? (score: 1)
- Author: "K0DAN" <k0dan@comcast.net>
- Date: Mon, 13 Jun 2011 19:01:15 -0500
- Thanks...will see what we have. I have a vision of peeling the braid all the way back to the hamshack! Could be this "direct burial" stuff really wasn't, and the jacket allowed moisture to get into t
- /archives//html/Towertalk/2011-06/msg00093.html (11,948 bytes)
- 4. Re: [TowerTalk] BLACKENED BRAID? (score: 1)
- Author: Al Kozakiewicz <akozak@hourglass.com>
- Date: Mon, 13 Jun 2011 20:27:22 -0400
- FWIW, we've always had one of those invisible dog fences. The antenna system for those is basically a loop of insulated #14 AWG wire shoved into a slit in the lawn cut with an edger. Early in their l
- /archives//html/Towertalk/2011-06/msg00094.html (13,189 bytes)
- 5. Re: [TowerTalk] BLACKENED BRAID? (score: 1)
- Author: "K0DAN" <k0dan@comcast.net>
- Date: Mon, 13 Jun 2011 19:37:38 -0500
- Hmmm...interesting. We too have the invisible dog fence, and I have something like 100' of 14 or 16 gauge insulated household wiring as the buried loop. Have not had any occasions to dig it up or spl
- /archives//html/Towertalk/2011-06/msg00095.html (14,045 bytes)
- 6. Re: [TowerTalk] BLACKENED BRAID? (score: 1)
- Author: Al Kozakiewicz <akozak@hourglass.com>
- Date: Mon, 13 Jun 2011 20:46:31 -0400
- Maybe it's the soil ph or something... I've taken to using black PVC water pipe. It's cheap and is almost as easily buried as coax. I jump on a flat bladed shovel to sink it full depth; yank the shov
- /archives//html/Towertalk/2011-06/msg00096.html (14,632 bytes)
- 7. Re: [TowerTalk] BLACKENED BRAID? (score: 1)
- Author: "Jim W7RY" <w7ry@inbox.com>
- Date: Mon, 13 Jun 2011 19:19:38 -0700
- It's most likely the jacket. I've had some old cheap coax that did the same thing. RG-213 with the non contaminating jacket was to keep the shield from decaying. As well as the center dielectric. 73
- /archives//html/Towertalk/2011-06/msg00097.html (17,563 bytes)
- 8. Re: [TowerTalk] BLACKENED BRAID? (score: 1)
- Author: "K0DAN" <k0dan@comcast.net>
- Date: Mon, 13 Jun 2011 21:42:45 -0500
- So you think the "black hair" I see might be contamination from the jacket versus oxidation? This could be significant, as I might have a chance to use a solvent to clean contamination, but cleaning
- /archives//html/Towertalk/2011-06/msg00098.html (19,626 bytes)
- 9. Re: [TowerTalk] BLACKENED BRAID? (score: 1)
- Author: K8RI on TT <k8ri-on-towertalk@tm.net>
- Date: Tue, 14 Jun 2011 00:01:15 -0400
- It all depends on if the deterioration is due to the lawn mower cut, or was there before the lawn mower got at it. A check with an analyzer showing loss might be worthwhile. There are two types of di
- /archives//html/Towertalk/2011-06/msg00100.html (13,921 bytes)
- 10. Re: [TowerTalk] BLACKENED BRAID? (score: 1)
- Author: Michael Tope <W4EF@dellroy.com>
- Date: Tue, 14 Jun 2011 01:39:41 -0700
- Dan, If you can get the end of the cable cleaned up well enough to make a reliable connection, check the loss of the run at the highest frequency where you can make an accurate measurement. If the sh
- /archives//html/Towertalk/2011-06/msg00103.html (18,792 bytes)
- 11. Re: [TowerTalk] BLACKENED BRAID? (score: 1)
- Author: K7LXC@aol.com
- Date: Tue, 14 Jun 2011 11:55:16 EDT
- Here's what it says in the Coax chapter (page 140) in my UP THE TOWER book (_www.championradio.com_ (http://www.championradio.com) ). from non-contaminating PVC unlike regular RG-8/U. Any cable used
- /archives//html/Towertalk/2011-06/msg00107.html (7,522 bytes)
- 12. Re: [TowerTalk] BLACKENED BRAID? (score: 1)
- Author: "K0DAN" <k0dan@comcast.net>
- Date: Tue, 14 Jun 2011 12:56:37 -0500
- Thanks for your input Steve...this is good info, and could be the issue here, as the severed coax was above ground level (barely), however most of the run is underground and I expect the same deterio
- /archives//html/Towertalk/2011-06/msg00110.html (9,064 bytes)
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