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21. Re: [TowerTalk] Single Point Ground (score: 1): Author: "Tom Rauch" <w8ji@contesting.com>; Date: Wed, 13 Jun 2007 15:30:37 -0400; My manhole in the yard is in a low spot and has an open bottom with gravel. The conduits all slope down to it. Where they don't do that, like in the island to the building, I drilled drain holes in; /archives//html/Towertalk/2007-06/msg00374.html (9,307 bytes)
22. Re: [TowerTalk] Single Point Ground (score: 1): Author: "W7CE" <w7ce@curtiss.net>; Date: Thu, 14 Jun 2007 07:58:18 -0700; Thanks for the reply Tom. I'm using 7/8" Heliax (LDF5-50A). Is it considered acceptable to direct bury that coax? I'll probably go with conduit, but direct burial might be a reasonable alternative.; /archives//html/Towertalk/2007-06/msg00410.html (9,407 bytes)
23. Re: [TowerTalk] Single Point Ground (score: 1): Author: "Tom Rauch" <w8ji@contesting.com>; Date: Thu, 14 Jun 2007 15:44:00 -0400; Any of the modern Heliax cables I have seen are closed cell with the dielectric bonded to the center and shield. The shield is also a solid "pipe", and even if it does leak the water has nowhere to; /archives//html/Towertalk/2007-06/msg00429.html (9,609 bytes)
24. [TowerTalk] Single point ground (score: 1): Author: Mike <nf4l@nf4l.com>; Date: Tue, 03 Nov 2009 17:00:11 -0500; I'm trying to balance the ideal and the practical. The electric service (meter) enters one end of my 72' x 38' house. There are two 8' ground rods at the meter. The power runs thru the attic to a bre; /archives//html/Towertalk/2009-11/msg00073.html (7,677 bytes)
25. Re: [TowerTalk] Single point ground (score: 1): Author: Mike <nf4l@nf4l.com>; Date: Tue, 03 Nov 2009 17:48:27 -0500; Thanks, Dave. I could do that fairly easily. I don't have a bulkhead panel for cable entry. I'm under the impression that all the grounds need to be tied together. ___________________________________; /archives//html/Towertalk/2009-11/msg00074.html (9,519 bytes)
26. Re: [TowerTalk] Single point ground (score: 1): Author: "Joe Barnes" <n4jbk@bellsouth.net>; Date: Tue, 3 Nov 2009 19:41:27 -0500; Mike you definitely need longer and more ground rods due to your soil being very sandy. I had a representative of the local power company come to the house and he emphatically stressed that it all ha; /archives//html/Towertalk/2009-11/msg00080.html (7,563 bytes)
27. Re: [TowerTalk] Single point ground (score: 1): Author: "Jim Brown" <jim@audiosystemsgroup.com>; Date: Tue, 03 Nov 2009 20:59:53 -0800; Yes, BUT: Don't use that circuitous route through the attic, because lightning won't follow it. Lighting will take the lowest impedance path, which is usually the shortest one. DO bond everything tog; /archives//html/Towertalk/2009-11/msg00096.html (8,014 bytes)
28. Re: [TowerTalk] Single point ground (score: 1): Author: Pete Smith <n4zr@contesting.com>; Date: Wed, 04 Nov 2009 05:43:25 -0500; It pains me to see hams with imperfect above-ground shack locations thinking about installing hundreds of dollars' worth of Polyphasers in pursuit of the wrong Holy Grail -- 24/7 antenna availability; /archives//html/Towertalk/2009-11/msg00100.html (10,405 bytes)
29. Re: [TowerTalk] Single point ground (score: 1): Author: Mike <nf4l@nf4l.com>; Date: Wed, 04 Nov 2009 05:49:34 -0500; Thanks, Jim - My thinking was that the route through the attic IS the shortest distance. I assume(yeah I know) the house came with a connection between the power entrance ground and the breaker panel; /archives//html/Towertalk/2009-11/msg00101.html (8,567 bytes)
30. Re: [TowerTalk] Single point ground (score: 1): Author: Mike <nf4l@nf4l.com>; Date: Wed, 04 Nov 2009 06:19:00 -0500; Hi Pete - I have given up on the idea of 'perfect safety 24/7' and espouse the disconnect everything philosophy. I'm only 6-10" above ground. 73, Mike NF4L ___________________________________________; /archives//html/Towertalk/2009-11/msg00102.html (11,320 bytes)
31. Re: [TowerTalk] Single point ground (score: 1): Author: "Roger (K8RI)" <K8RI-on-TowerTalk@tm.net>; Date: Wed, 04 Nov 2009 09:14:34 -0500; If disconnecting everything, the leads still need to be well grounded, otherwise it's like Franklin's kite with the other end laying on the floor in the shack where they can start a fire...or worse.; /archives//html/Towertalk/2009-11/msg00106.html (13,068 bytes)
32. Re: [TowerTalk] Single point ground (score: 1): Author: Pete Smith <n4zr@contesting.com>; Date: Wed, 04 Nov 2009 09:43:39 -0500; Well, I dunno - my entry panel is grounded, through about 25 feet of #2 copper, but all the cables simply terminate at it, and I disconnect by pulling the plugs from the inside - never had anything m; /archives//html/Towertalk/2009-11/msg00107.html (8,649 bytes)
33. Re: [TowerTalk] Single point ground (score: 1): Author: Michael Goins <wmgoins@gmail.com>; Date: Wed, 4 Nov 2009 09:19:52 -0600; I disconnect everything and ground it to the same plug connected to ground outside the station. When I operate, I switch them. When finished, I switch back. Lightning is severely limited in how it ca; /archives//html/Towertalk/2009-11/msg00108.html (10,120 bytes)
34. Re: [TowerTalk] Single point ground (score: 1): Author: "Jim Brown" <jim@audiosystemsgroup.com>; Date: Wed, 04 Nov 2009 07:38:02 -0800; The electrician who wired small building that houses my shack here in CA did something almost as dumb, but on a smaller scale. That's one of the things I fixed. 73, Jim K9YC _________________________; /archives//html/Towertalk/2009-11/msg00109.html (8,586 bytes)
35. Re: [TowerTalk] Single point ground (score: 1): Author: "Jim Brown" <jim@audiosystemsgroup.com>; Date: Wed, 04 Nov 2009 07:46:09 -0800; That's the right way to do it! If you simply disconnect on the other side of the panel (leaving the antennas ungrounded), there's always the chance (and a good chance) that a strike will find it's wa; /archives//html/Towertalk/2009-11/msg00110.html (9,329 bytes)
36. Re: [TowerTalk] Single point ground (score: 1): Author: Jim Lux <jimlux@earthlink.net>; Date: Wed, 4 Nov 2009 10:01:03 -0800 (GMT-08:00); do you care about compliance with the electrical code? That might be a starting point..it's going to require a grounding conductor from wherever the coax enters the premises and you have your antenna; /archives//html/Towertalk/2009-11/msg00114.html (10,314 bytes)
37. Re: [TowerTalk] Single point ground (score: 1): Author: Mike <nf4l@nf4l.com>; Date: Wed, 04 Nov 2009 13:19:50 -0500; That's what I thought. My issue was how best to accomplish that. Mike NF4L _______________________________________________ _______________________________________________ TowerTalk mailing list Tower; /archives//html/Towertalk/2009-11/msg00115.html (8,205 bytes)
38. Re: [TowerTalk] Single point ground (score: 1): Author: Rob Atkinson <ranchorobbo@gmail.com>; Date: Wed, 4 Nov 2009 14:59:08 -0600; Correct. I often get the feeling a lot of hams think that broadcasters and other professionals work in this bullet proof utopia of immunity to direct hits. Not true. They do indeed take several good; /archives//html/Towertalk/2009-11/msg00116.html (8,988 bytes)
39. Re: [TowerTalk] Single point ground (score: 1): Author: "Roger (K8RI)" <K8RI-on-TowerTalk@tm.net>; Date: Wed, 04 Nov 2009 20:51:54 -0500; Nothing is bullet proof, BUT my system has taken 17 direct hits to the tower since the ground system was finished. I normally do not bother with disconnecting anything. The reason is not that I consi; /archives//html/Towertalk/2009-11/msg00119.html (10,778 bytes)

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