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Total 34 documents matching your query.

21. Re: [TowerTalk] Ground System (score: 1): Author: "Jim Brown" <jim@audiosystemsgroup.com>; Date: Mon, 13 Aug 2007 11:13:07 -0700; One aspect of the lightning protection problem that is often overlooked is the potential difference that can develop between equipment that is interconnected. A lightning event will raise the potenti; /archives//html/Towertalk/2007-08/msg00363.html (8,935 bytes)
22. Re: [TowerTalk] Ground System (score: 1): Author: "Dick Green WC1M" <wc1m@msn.com>; Date: Mon, 13 Aug 2007 23:31:45 -0400; RG-8 style coax shields won't take much current before they melt, but as I mentioned, I have two runs of 1-5/8" heliax running between the tower and shack, connected to the tower ground system at on; /archives//html/Towertalk/2007-08/msg00380.html (9,535 bytes)
23. Re: [TowerTalk] Ground System (score: 1): Author: "Roger (K8RI)" <K8RI-on-TowerTalk@tm.net>; Date: Tue, 14 Aug 2007 00:48:28 -0400; Wellll...Kinda, sorta...almost...maybe. There are a lot of variables, but IF that copper tube represents a low resistance, low impedance, high current capable, insulated from ground, path into the s; /archives//html/Towertalk/2007-08/msg00381.html (11,757 bytes)
24. Re: [TowerTalk] Ground System (score: 1): Author: K4SAV <RadioIR@charter.net>; Date: Tue, 14 Aug 2007 00:50:23 -0500; True, and you are not going to melt this. And your numbers look close. If it is 1/64 thick, then each of these lines would have just slightly less copper than a #00 wire, and lower skin resistance. D; /archives//html/Towertalk/2007-08/msg00382.html (10,701 bytes)
25. Re: [TowerTalk] Ground System (score: 1): Author: "Kenny Young" <ab4gg@mindspring.com>; Date: Mon, 13 Aug 2007 21:49:20 -0400; It is also a requirement of the National Electrical Code to bond the tower ground to the service entrance ground. Improper bonding may give an insurance company an out if a claim was made due to ligh; /archives//html/Towertalk/2007-08/msg00385.html (8,025 bytes)
26. Re: [TowerTalk] Ground System (score: 1): Author: "jeremy-ca" <km1h@jeremy.mv.com>; Date: Tue, 14 Aug 2007 08:50:19 -0400; Most of the used 1 5/8" Ive seen including the many rolls I have here had the jacket removed at regular intervals for bonding to the tower. I am "assuming" that doing similar to Dicks and attaching t; /archives//html/Towertalk/2007-08/msg00388.html (12,347 bytes)
27. Re: [TowerTalk] Ground System (score: 1): Author: "Keith Dutson" <kdutson@sbcglobal.net>; Date: Thu, 16 Aug 2007 20:37:06 -0500; I read somewhere, maybe from Polyphaser's notes, that the purpose of the tower ground system is to spread the charge caused by lightning to as much earth as possible. There is obviously a point of di; /archives//html/Towertalk/2007-08/msg00460.html (11,378 bytes)
28. Re: [TowerTalk] Ground System (score: 1): Author: "Gary Schafer" <garyschafer@comcast.net>; Date: Thu, 16 Aug 2007 20:38:51 -0500; There will be a great amount of capacitive coupling to ground provided by those long cables even being insulated. A great deal of lightning energy is connected to earth by capacitance in any ground; /archives//html/Towertalk/2007-08/msg00461.html (10,627 bytes)
29. Re: [TowerTalk] Ground System (score: 1): Author: "jeremy-ca" <km1h@jeremy.mv.com>; Date: Thu, 16 Aug 2007 21:44:55 -0400; Would it help to run 1/4" copper tubing (as used for refrigerator ice makers) in the trench? Then bond that to several ground rods and also tape the coax to that tubing. Carl KM1H ___________________; /archives//html/Towertalk/2007-08/msg00462.html (11,558 bytes)
30. Re: [TowerTalk] Ground System (score: 1): Author: "Gary Schafer" <garyschafer@comcast.net>; Date: Thu, 16 Aug 2007 21:00:19 -0500; Copper strap is cheaper than tubing for a given amount of surface area verses tubing. If I had a choice of where to run that extra copper I would run it in another direction from the tower and some f; /archives//html/Towertalk/2007-08/msg00463.html (13,512 bytes)
31. Re: [TowerTalk] Ground System (score: 1): Author: "Jim Brown" <jim@audiosystemsgroup.com>; Date: Thu, 16 Aug 2007 19:38:34 -0700; You might want to do some calcs (on the capacitive reactance of a big radial system) before you say that a DC ground is BETTER. Having a DC connection in addition to the capacitive coupling IS better; /archives//html/Towertalk/2007-08/msg00464.html (9,030 bytes)
32. Re: [TowerTalk] Ground System (score: 1): Author: "Gary Schafer" <garyschafer@comcast.net>; Date: Thu, 16 Aug 2007 22:09:32 -0500; I thought that by saying that "a DC (bare wire) connection would be better and help more with the low frequency energy coupling" would be taken to mean that it would be better than just the capaciti; /archives//html/Towertalk/2007-08/msg00465.html (10,131 bytes)
33. Re: [TowerTalk] Ground System (score: 1): Author: "Russell Hill" <rustyhill@earthlink.net>; Date: Fri, 17 Aug 2007 07:50:56 -0500; Is there a convenient sousrce for copper strap or copper plate? Home Depot has the copper tubing I reckon. Thanks, Rusty, na5tr _______________________________________________ _______________________; /archives//html/Towertalk/2007-08/msg00471.html (14,901 bytes)
34. Re: [TowerTalk] Ground System (score: 1): Author: "jeremy-ca" <km1h@jeremy.mv.com>; Date: Fri, 17 Aug 2007 10:13:02 -0400; I dont know of any local source to me that has strap at a reasonable cost, they all have minimum orders. There used to be several scrap dealers that let me poke around but they have all been turned i; /archives//html/Towertalk/2007-08/msg00479.html (16,701 bytes)

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