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Total 7 documents matching your query.

1. [TowerTalk] lighting "umbrella" (score: 1): Author: "Jim Jarvis" <jimjarvis@comcast.net>; Date: Sat, 26 Feb 2005 12:51:30 -0500; Folks, There's an aspect of this that hasn't been touched on, that has to be considered. Let's assume that you have a really good dissipative ground system from said tower. Multiple rods, multiple ra; /archives//html/Towertalk/2005-02/msg00595.html (8,996 bytes)
2. Re: [TowerTalk] lighting "umbrella" (score: 1): Author: doc <kd4e@verizon.net>; Date: Sat, 26 Feb 2005 13:13:17 -0500; All of my gear operates off a 12vdc battery bank so except when being recharged it will all be isolated from ground. Everything entering the house (grid, antenna feedlines, rotor control cable, tele; /archives//html/Towertalk/2005-02/msg00597.html (9,405 bytes)
3. Re: [TowerTalk] lighting "umbrella" (score: 1): Author: Gary Schafer <garyschafer@comcast.net>; Date: Sat, 26 Feb 2005 13:34:48 -0500; Good points Jim, This is where caution should come in when some advocate a coil in the feed line near the house to act as a "choke" for lightning. It can just as well act as a multi turn transformer; /archives//html/Towertalk/2005-02/msg00598.html (10,623 bytes)
4. Re: [TowerTalk] lighting "umbrella" (score: 1): Author: "Jim Jarvis" <jimjarvis@comcast.net>; Date: Sat, 26 Feb 2005 14:00:17 -0500; Hi Gary, In my case, I use clip on ferrite chokes. Type 73, from radioworks. Coax shields are grounded at the SPG. Ferrites isolate the shield exteriors from RF, so the antennas aren't tied together.; /archives//html/Towertalk/2005-02/msg00599.html (12,657 bytes)
5. Re: [TowerTalk] lighting "umbrella" (score: 1): Author: "Jim Jarvis" <jimjarvis@comcast.net>; Date: Sat, 26 Feb 2005 14:03:35 -0500; Actually, Gary, a SINGLE TURN lightning choke will work quite effectively. They're commonly used on AM bcdst towers, to increase the dV at the tower base, and trigger an arc at the tower base lightni; /archives//html/Towertalk/2005-02/msg00600.html (12,248 bytes)
6. Re: [TowerTalk] lighting "umbrella" (score: 1): Author: "Jerry Keller - K3BZ" <k3bz@arrl.net>; Date: Sat, 26 Feb 2005 14:44:01 -0500; Hi, Jim... Which is it... a lightning GAP at the tower base? Or grounded coax at the tower base? Or didn't I understand you? And did you mean that as little as one loop in the coax between the tower; /archives//html/Towertalk/2005-02/msg00601.html (13,924 bytes)
7. Re: [TowerTalk] lighting "umbrella" (score: 1): Author: "Floyd Sense" <fsense@copper.net>; Date: Sat, 26 Feb 2005 15:00:13 -0500; Jim - I can vouch for the fact that the portion of your post I've included below is very true. I was quite surprised to find that the jacks/sockets on the rear of my Icom 781 and 765 were NOT grounde; /archives//html/Towertalk/2005-02/msg00602.html (9,746 bytes)

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