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1. [TowerTalk] Site Grounding (score: 1): Author: WarrenWolff@aol.com; Date: Mon, 20 Oct 2003 01:24:28 EDT; Where is the best place (price) to find 1/2" - 3/4" copper braid for extensive grounding (250 feet or so)? Appreciate any help/advice. Warren, W5KKW; WarrenWolff@aol.com _____________________________; /archives//html/Towertalk/2003-10/msg00421.html (6,453 bytes)
2. RE: [TowerTalk] Site Grounding (score: 1): Author: Eric Scace K3NA <eric@k3na.org>; Date: Mon, 20 Oct 2003 08:44:15 -0400; It seems unusual to need that much braid. Braid is not always the best material to use in grounding as it can develop very high impedances. Could you explain the application in a bit more detail? --O; /archives//html/Towertalk/2003-10/msg00425.html (8,233 bytes)
3. Re: [TowerTalk] Site Grounding (score: 1): Author: "Jerry Keller" <k3bz@arrl.net>; Date: Mon, 20 Oct 2003 09:27:53 -0400; Warren... I strip the braid out of old coax that I buy cheap at hamfests. It lies pretty flat once you get it out. The remaining center conductor can be used for radials and a host of other things. I; /archives//html/Towertalk/2003-10/msg00429.html (8,127 bytes)
4. Re: [TowerTalk] Site Grounding (score: 1): Author: "Mike Warnock" <k7xn@cox.net>; Date: Mon, 20 Oct 2003 17:10:21 -0700; Warren... I strip the braid out of old coax that I buy cheap at hamfests. It lies pretty flat once you get it out. The remaining center conductor can be used for radials and a host of other things. I; /archives//html/Towertalk/2003-10/msg00445.html (9,411 bytes)
5. Re: [TowerTalk] Site Grounding (score: 1): Author: "Jim Wilcox" <jim.wil@cox.net>; Date: Mon, 20 Oct 2003 22:39:35 -0400; Someone asked this earlier, but I still haven't seen the answer: What is the _purpose_ of the ground? If it's for power-line/safety, the braid probably will be fine. But if one wants an RF ground, br; /archives//html/Towertalk/2003-10/msg00452.html (10,310 bytes)
6. RE: [TowerTalk] Site Grounding (score: 1): Author: Eric Scace K3NA <eric@k3na.org>; Date: Tue, 21 Oct 2003 09:57:09 -0400; Hi Warren -- I would not bury braid for this application. Braid corrodes quickly when exposed. As others have pointed out, corroded braid develops a significant impedance at RF, which is not what one; /archives//html/Towertalk/2003-10/msg00460.html (10,496 bytes)
7. RE: [TowerTalk] Site Grounding (score: 1): Author: "N2TK, Tony" <tony.kaz@verizon.net>; Date: Tue, 21 Oct 2003 10:17:11 -0400; Hi Eric. If possible I would like to expand on this subject somewhat. Here in NY the corrosiveness of the soil ate through my cadwelded #4 stranded copper wire where it was attached to the copper cla; /archives//html/Towertalk/2003-10/msg00461.html (11,943 bytes)
8. RE: [TowerTalk] Site Grounding (score: 1): Author: Tony King - W4ZT <towertalk@w4zt.com>; Date: Tue, 21 Oct 2003 10:19:41 -0400; If you have but one chance to bury in the ditches and you're pressed for time, go get some copper plumbing pipe. Brazing the joints would be best. 73, Tony At 09:57 AM 10/21/2003, Eric Scace K3NA wro; /archives//html/Towertalk/2003-10/msg00462.html (11,605 bytes)
9. RE: [TowerTalk] Site Grounding (score: 1): Author: kb9cry@comcast.net; Date: Tue, 21 Oct 2003 14:31:38 +0000; I'm no expert but an avid learner and listener. We all must remember that RF grounding and lightning grounding are two different things. I use #18 insulated stranded wire for my RF ground radials. I; /archives//html/Towertalk/2003-10/msg00463.html (8,836 bytes)
10. RE: [TowerTalk] Site Grounding (score: 1): Author: kb9cry@comcast.net; Date: Tue, 21 Oct 2003 14:33:02 +0000; I believe a brazed joint will pop open if hit with a lightning induced surge. Phil KB9CRY _______________________________________________ See: http://www.mscomputer.com for "Self Supporting Towers",; /archives//html/Towertalk/2003-10/msg00464.html (12,871 bytes)
11. RE: [TowerTalk] Site Grounding (score: 1): Author: Tony King - W4ZT <towertalk@w4zt.com>; Date: Tue, 21 Oct 2003 10:39:24 -0400; Not if it is done properly... when properly brazed, it's a sweat joint with a much higher strength material. Now if it's just glopped on like so many do their solder joints, it's not worth the time d; /archives//html/Towertalk/2003-10/msg00465.html (13,260 bytes)
12. RE: [TowerTalk] Site Grounding (score: 1): Author: kb9cry@comcast.net; Date: Tue, 21 Oct 2003 15:00:45 +0000; I don't think strength has anything to do with the potential problem. I may be wrong, I'd defer to the experts, but it may not have the current carrying capacity of a mechanical or bonded (Cadweld) j; /archives//html/Towertalk/2003-10/msg00467.html (15,281 bytes)
13. Re: [TowerTalk] Site Grounding (score: 1): Author: "Mark Beckwith" <mark@concertart.com>; Date: Tue, 21 Oct 2003 10:41:59 -0500; expensive. Does it make sense to bury some length of flashing instead of driving a rod, then? Is depth an Mark, N5OT when exposed. As others have pointed out, corroded braid grounding system. that u; /archives//html/Towertalk/2003-10/msg00476.html (12,406 bytes)
14. Re: [TowerTalk] Site Grounding (score: 1): Author: "Mark Beckwith" <mark@concertart.com>; Date: Tue, 21 Oct 2003 10:44:07 -0500; ...uh, "issue?" This one got away before I finished typing. I hate it when that Mark, N5OT _______________________________________________ See: http://www.mscomputer.com for "Self Supporting Towers",; /archives//html/Towertalk/2003-10/msg00477.html (8,340 bytes)
15. Re: [TowerTalk] Site Grounding (score: 1): Author: Tony King - W4ZT <towertalk@w4zt.com>; Date: Tue, 21 Oct 2003 11:55:46 -0400; Brazing is a different process than the soldering done in domestic water systems (http://www.geocities.com/CapeCanaveral/Lab/3495/Temp/basic.htm). If you look at MIL-HDBK-419A, Grounding, Bonding, an; /archives//html/Towertalk/2003-10/msg00480.html (9,384 bytes)
16. RE: [TowerTalk] Site Grounding (score: 1): Author: Jim Lux <jimlux@earthlink.net>; Date: Tue, 21 Oct 2003 09:38:59 -0700; Hard to imagine a scenario where that would happen. It would require that the IR losses in the joint be high enough to melt the braze material. By the way, I'm not sure what you really want here is a; /archives//html/Towertalk/2003-10/msg00483.html (10,875 bytes)
17. Re: [TowerTalk] Site Grounding (score: 1): Author: Jim Lux <jimlux@earthlink.net>; Date: Tue, 21 Oct 2003 09:49:17 -0700; ...uh, "issue?" This one got away before I finished typing. I hate it when that Mark, N5OT Indeed, it's more of a surface area in contact with the soil than a depth of penetration issue. Burying the; /archives//html/Towertalk/2003-10/msg00484.html (9,558 bytes)
18. RE: [TowerTalk] Site Grounding (score: 1): Author: Tony King - W4ZT <towertalk@w4zt.com>; Date: Tue, 21 Oct 2003 12:55:40 -0400; At 12:38 PM 10/21/2003, Jim Lux wrote: <snip> By the way, I'm not sure what you really want here is a brazed copper/copper joint. Brazing is usually used to refer to a joint using brass or copper to; /archives//html/Towertalk/2003-10/msg00485.html (9,822 bytes)
19. RE: [TowerTalk] Site Grounding (score: 1): Author: Jim Lux <jimlux@earthlink.net>; Date: Tue, 21 Oct 2003 10:20:19 -0700; At 12:55 PM 10/21/2003 -0400, Tony King - W4ZT wrote: At 12:38 PM 10/21/2003, Jim Lux wrote: <snip> By the way, I'm not sure what you really want here is a brazed copper/copper joint. Brazing is usua; /archives//html/Towertalk/2003-10/msg00486.html (11,792 bytes)
20. RE: [TowerTalk] Site Grounding (score: 1): Author: kb9cry@comcast.net; Date: Tue, 21 Oct 2003 17:40:06 +0000; Using brass or copper to join copper would require getting the bond metal Yes it is and it's called CadWeld. Their "OneShot" products are awesome. Go to erico.com click on the Cadweld button and then; /archives//html/Towertalk/2003-10/msg00491.html (8,964 bytes)

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