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21. Re: [TenTec] RF Ground (score: 1): Author: Steve Hunt <steve@karinya.net>; Date: Sun, 05 Apr 2009 13:31:28 +0100; Gary - not sure what point you are making. Say we did have the perfect RF Ground at the radio, impedance zero, voltage zero. That's when the common-mode current is highest and when the radiation from; /archives//html/TenTec/2009-04/msg00084.html (9,927 bytes)
22. Re: [TenTec] RF Ground (score: 1): Author: "Gary Hoffman" <ghoffman@spacetech.com>; Date: Sun, 5 Apr 2009 14:22:49 -0400; My point is different. I don't care if the coax radiates. In fact I accept that it will in virtually all cases, at least to a degree. I was referring to the effect at the input to the radio. If we sh; /archives//html/TenTec/2009-04/msg00093.html (11,625 bytes)
23. Re: [TenTec] RF Ground (score: 1): Author: Jim Brown <k9yc@audiosystemsgroup.com>; Date: Sun, 05 Apr 2009 12:01:49 -0700; I do, for three reasons. RF in the shack, RF in my living room and my neighbor's living room, and, VERY important, noise coupled from reception on the coax to the antenna to the RX. IF the coax is co; /archives//html/TenTec/2009-04/msg00095.html (11,441 bytes)
24. Re: [TenTec] RF Ground (score: 1): Author: "Gary Hoffman" <ghoffman@spacetech.com>; Date: Sun, 5 Apr 2009 18:46:15 -0400; Ok Jim, I quit. Its a nail. 73 de Gary, AA2IZ _______________________________________________ TenTec mailing list TenTec@contesting.com http://lists.contesting.com/mailman/listinfo/tentec; /archives//html/TenTec/2009-04/msg00099.html (12,262 bytes)
25. Re: [TenTec] RF Ground (score: 1): Author: Jim WA9YSD <wa9ysd@yahoo.com>; Date: Sun, 5 Apr 2009 16:34:12 -0700 (PDT); If you were checking grounds in a newly developed project with new houses, what would you use to check the grounding to each house? The fire hydrant. You would run heavy 00 welding cable from the hyd; /archives//html/TenTec/2009-04/msg00102.html (7,414 bytes)
26. Re: [TenTec] RF Ground (score: 1): Author: "Bob McGraw - K4TAX" <RMcGraw@Blomand.net>; Date: Sun, 5 Apr 2009 21:59:36 -0500; Jim and I occasionally agree and then there's times that we don't see eye-to-eye on a topic. Agreed, his tutorial is very good. I suggest that all should read it. One very common item that I've found; /archives//html/TenTec/2009-04/msg00106.html (13,697 bytes)
27. Re: [TenTec] RF Ground (score: 1): Author: "Bob McGraw - K4TAX" <RMcGraw@Blomand.net>; Date: Sun, 5 Apr 2009 22:14:42 -0500; Everything inside the house should reference the ground and neutral at the service entrance or breaker panel. Since there is supposed to be a driven ground at the service entrance, I could care less; /archives//html/TenTec/2009-04/msg00107.html (9,335 bytes)
28. Re: [TenTec] RF Ground (score: 1): Author: "Dr. Gerald N. Johnson" <geraldj@storm.weather.net>; Date: Sun, 05 Apr 2009 21:29:09 -0600; If you really want lightning and RF grounding, those ground sources need to be connected together with wide copper strap. 18" is a nice width. Otherwise the inductance is too much to be totally effec; /archives//html/TenTec/2009-04/msg00109.html (8,648 bytes)
29. Re: [TenTec] RF Ground (score: 1): Author: "Gary Smith" <Gary@doctorgary.net>; Date: Mon, 06 Apr 2009 06:05:22 -0400; Hi Bob, My antennae use the same radial field of 60 or so 130' radials. The radial plate is 360' from the house. The only connection between the house and the radial field is via the coax shield. Are; /archives//html/TenTec/2009-04/msg00110.html (8,251 bytes)
30. Re: [TenTec] RF Ground (score: 1): Author: <waltk8cv4612amos@att.net>; Date: Mon, 6 Apr 2009 06:47:46 -0400; The simple answer is probably YES ! Walt K8CV Royal Oak, MI. _______________________________________________ TenTec mailing list TenTec@contesting.com http://lists.contesting.com/mailman/listinfo/ten; /archives//html/TenTec/2009-04/msg00111.html (8,924 bytes)
31. Re: [TenTec] RF Ground (score: 1): Author: "Bob McGraw - K4TAX" <RMcGraw@Blomand.net>; Date: Mon, 6 Apr 2009 09:23:14 -0500; Gary: Here's what Jerry had to say and I agree: quote: If you really want lightning and RF grounding, those ground sources need to be connected together with wide copper strap. 18" is a nice width. O; /archives//html/TenTec/2009-04/msg00116.html (10,237 bytes)
32. Re: [TenTec] RF Ground (score: 1): Author: "Ron Castro" <ronc@sonic.net>; Date: Mon, 6 Apr 2009 08:41:18 -0700; I think 18" is overkill. In the broadcast industry we use 4" strap, which considering today's cost of copper is very expensive. Ron N6IE www.N6IE.com _______________________________________________ T; /archives//html/TenTec/2009-04/msg00120.html (11,504 bytes)
33. Re: [TenTec] RF Ground (score: 1): Author: "Bob McGraw - K4TAX" <RMcGraw@Blomand.net>; Date: Mon, 6 Apr 2009 11:08:38 -0500; I agree Ron. I believe that 1/2" copper pipe as a bond conductor is adequate for most situations. The 1/2" refrigeration line is soft and flexible and can be obtained in 100 ft to 250 ft coils more o; /archives//html/TenTec/2009-04/msg00122.html (13,522 bytes)
34. Re: [TenTec] RF Ground (score: 1): Author: "Dr. Gerald N. Johnson" <geraldj@storm.weather.net>; Date: Mon, 06 Apr 2009 10:42:39 -0600; I prefer to isolate the tower from the house wiring during thunderstorms. When lightning hits with a few kilo amps and the house wiring is 12 gauge, even a small fraction of those few kilo amps wipes; /archives//html/TenTec/2009-04/msg00123.html (9,524 bytes)
35. Re: [TenTec] RF Ground (score: 1): Author: "Dr. Gerald N. Johnson" <geraldj@storm.weather.net>; Date: Mon, 06 Apr 2009 10:49:11 -0600; Rural repeater and cell phone sites spend the money for a band of 18" surrounding the building and believe (based on years of survival on Iowa prairies) its worth the price. All cables through the wa; /archives//html/TenTec/2009-04/msg00125.html (8,698 bytes)
36. Re: [TenTec] RF Ground (score: 1): Author: "Bob McGraw - K4TAX" <RMcGraw@Blomand.net>; Date: Mon, 6 Apr 2009 11:59:51 -0500; Oh yes, isolation is best, that is until lest we forget. I also agree that guy wires should have a driven ground outside of the anchor base and a separate #6 connected to all of the guys above the tu; /archives//html/TenTec/2009-04/msg00126.html (10,593 bytes)
37. Re: [TenTec] RF Ground (score: 1): Author: Jim WA9YSD <wa9ysd@yahoo.com>; Date: Mon, 6 Apr 2009 15:21:44 -0700 (PDT); Jim Brown is right. One other current loop is the neutral. I have know a person that eliminated the neutral to eliminate that remaining current loop. He used the station ground as the return. This is; /archives//html/TenTec/2009-04/msg00127.html (8,314 bytes)
38. Re: [TenTec] RF Ground (score: 1): Author: "Bob McGraw - K4TAX" <RMcGraw@Blomand.net>; Date: Mon, 6 Apr 2009 18:21:58 -0500; Lifting the neutral or ground is a sure fire way to increase your funeral directors bank account. 73 Bob, K4TAX _______________________________________________ TenTec mailing list TenTec@contesting.c; /archives//html/TenTec/2009-04/msg00129.html (9,452 bytes)
39. Re: [TenTec] RF Ground (score: 1): Author: "Gary Hoffman" <ghoffman@spacetech.com>; Date: Mon, 6 Apr 2009 19:33:37 -0400; Apropos of this, I use 1 inch OD soft copper refrigeration tubing for my ground connections also. It is quite available and (relatively) inexpensive. I order rolls of it from McMaster Carr, but your; /archives//html/TenTec/2009-04/msg00130.html (14,035 bytes)
40. Re: [TenTec] RF Ground (score: 1): Author: "Bob McGraw - K4TAX" <RMcGraw@Blomand.net>; Date: Mon, 6 Apr 2009 18:44:58 -0500; Great job. Thanks for doing it correctly. I bet your stations performance shows the results of your efforts too. 73 Bob, K4TAX _______________________________________________ TenTec mailing list TenT; /archives//html/TenTec/2009-04/msg00131.html (15,350 bytes)

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