Search String: Display: Description: Sort:

Results:

References: [ +from:chief@thechief.com: 62 ]

Total 62 documents matching your query.

41. Re: [TowerTalk] Top hat on mobile usefull? (score: 1)
Author: "Dudley Chapman" <chief@thechief.com>
Date: Tue, 27 Sep 2005 13:24:49 -0400
Tom Rauch wrote........ Message: 1 Date: Tue, 27 Sep 2005 11:11:36 -0400 From: "Tom Rauch" <w8ji@contesting.com> Subject: Re: [TowerTalk] Top hat on mobile usefull? To: <towertalk@contesting.com> Mes
/archives//html/Towertalk/2005-09/msg00835.html (11,944 bytes)

42. Re: [TowerTalk] Top hat on mobile usefull? (score: 1)
Author: "Dudley Chapman" <chief@thechief.com>
Date: Tue, 27 Sep 2005 16:08:29 -0400
Gary, Thanks for the clarification. I forgot that when the energy becomes a detached EM wave, that that magnetic and electric fields become "mutually causal". So given that, then, is a few more feet
/archives//html/Towertalk/2005-09/msg00838.html (8,930 bytes)

43. Re: [TowerTalk] Top hat on mobile usefull? (score: 1)
Author: "Dudley Chapman" <chief@thechief.com>
Date: Wed, 28 Sep 2005 01:30:18 -0400
Tom Rauch wrote.... Tom, Yes, the capacity hat was connected to the top of the coil with a wire. The extra delrin rod was merely to put some distance between the coil and the capacity hat in order to
/archives//html/Towertalk/2005-09/msg00850.html (10,982 bytes)

44. Re: [TowerTalk] TowerTalk Digest, Vol 34, Issue 54 (score: 1)
Author: "Dudley Chapman" <chief@thechief.com>
Date: Mon, 10 Oct 2005 11:53:39 -0400
(...) (...) Dave, One comment on your ground rods. Everything I have read says that adjacent ground rods should be no closer than the sum of their lengths. For example, your two adjacent 8' ground r
/archives//html/Towertalk/2005-10/msg00403.html (8,084 bytes)

45. Re: [TowerTalk] TowerTalk Digest, Vol 35, Issue 1 (score: 1)
Author: "Dudley Chapman" <chief@thechief.com>
Date: Tue, 1 Nov 2005 16:34:14 -0500
Jan, Its real like Cold Fusion and Intelligent Design is real. Only in Area 51. But it sure is fun to have it around. Dudley - WA1X _______________________________________________ See: http://www.ms
/archives//html/Towertalk/2005-11/msg00018.html (7,783 bytes)

46. Re: [TowerTalk] TowerTalk Digest, Vol 35, Issue 6 (score: 1)
Author: "Dudley Chapman" <chief@thechief.com>
Date: Wed, 2 Nov 2005 13:08:07 -0500
Bill, I offer my apologies, but I meant nothing theological in my comment. The three ideas mentioned have been offered by their proponents as scientific hypotheses with one or more very unconvention
/archives//html/Towertalk/2005-11/msg00046.html (11,079 bytes)

47. Re: [TowerTalk] Intelligent CFA (score: 1)
Author: "Dudley Chapman" <chief@thechief.com>
Date: Thu, 3 Nov 2005 11:31:43 -0500
(...) Bill, Thanks for your kind response. Yes, it's the fringe science of antennas that interests me. There is enough controversy in that other area that we certainly don't need to bring in somethi
/archives//html/Towertalk/2005-11/msg00107.html (8,193 bytes)

48. Re: [TowerTalk] EH Antenna - or when is a shield not a shield? (score: 1)
Author: "Dudley Chapman" <chief@thechief.com>
Date: Fri, 11 Nov 2005 13:02:16 -0500
Tom wrote... Tom, Yes, these fringe ideas stick around because the theory always looks reasonable, except for an innocuous looking but terribly fatal flaw. In this case: "...the beads affect both the
/archives//html/Towertalk/2005-11/msg00347.html (9,420 bytes)

49. Re: [TowerTalk] TowerTalk Digest, Vol 35, Issue 79 (score: 1)
Author: "Dudley Chapman" <chief@thechief.com>
Date: Mon, 21 Nov 2005 11:46:08 -0500
Jim, Radials for lightning protection have different criteria than radials for rf. So it's best to consider them separately. The reason why AM BC stations can combine the functions is because they h
/archives//html/Towertalk/2005-11/msg00608.html (9,085 bytes)

50. Re: [TowerTalk] Radials (score: 1)
Author: "Dudley Chapman" <chief@thechief.com>
Date: Tue, 22 Nov 2005 12:25:21 -0500
Gary, I am now officially confused. Suppose I built a vertical and ran 40 0.2 wavelength rf radials of insulated #14 wire along the top of the ground. Suppose I had a single ground rod near to and c
/archives//html/Towertalk/2005-11/msg00618.html (9,532 bytes)

51. Re: [TowerTalk] TowerTalk Digest, Vol 35, Issue 85 (score: 1)
Author: "Dudley Chapman" <chief@thechief.com>
Date: Wed, 23 Nov 2005 12:46:50 -0500
(...) Mark, Actually, I was aware of those distinctions in the roles of grounds and counterpoises. However, your short treatise was extremely well written and concise. We all should print it out and
/archives//html/Towertalk/2005-11/msg00655.html (9,615 bytes)

52. Re: [TowerTalk] TowerTalk Digest, Vol 36, Issue 54 (score: 1)
Author: "Dudley Chapman" <chief@thechief.com>
Date: Tue, 20 Dec 2005 12:55:08 -0500
Gary, It is a lot of work to accurately set up a model for a given multiband yagi. However, hams do it all the time out of a labor of love for their own antennas. I am guessing that people have alre
/archives//html/Towertalk/2005-12/msg00382.html (7,998 bytes)

53. [TowerTalk] Dipole Centre - Proximity To Metal Mast (score: 1)
Author: "Dudley Chapman" <chief@thechief.com>
Date: Tue, 31 Jan 2006 09:17:12 -0500
Jim, The center of a dipole is quite insensitive to proximity to metal. You could secure the center insulator directly to the metal mast, if you have no other choice. Since your antenna might not be
/archives//html/Towertalk/2006-01/msg00636.html (9,210 bytes)

54. Re: [TowerTalk] TowerTalk Digest, Vol 38, Issue 17 (score: 1)
Author: "Dudley Chapman" <chief@thechief.com>
Date: Fri, 10 Feb 2006 10:13:51 -0500
Bob, The answer to your V question depends on what kind of operating you do on 80m. The height of the center of the antenna is the most important concern. With the center currently at 25 feet, I ima
/archives//html/Towertalk/2006-02/msg00124.html (9,016 bytes)

55. Re: [TowerTalk] Tubular Tower (score: 1)
Author: "Dudley Chapman" <chief@thechief.com>
Date: Tue, 21 Mar 2006 19:20:07 -0500
Message: 1 Date: Sun, 19 Mar 2006 11:29:21 EST From: NPAlex@aol.com Subject: [TowerTalk] Build your own Square Needle To: towertalk@contesting.com, mjweaver@fmtcs.com Message-ID: <2c8.5ab92a2.314ee0e
/archives//html/Towertalk/2006-03/msg00424.html (7,832 bytes)

56. Re: [TowerTalk] TowerTalk Digest, Vol 40, Issue 44 (score: 1)
Author: "Dudley Chapman" <chief@thechief.com>
Date: Mon, 17 Apr 2006 19:23:48 -0400
-- Message: 2 Date: Mon, 17 Apr 2006 10:23:17 -0700 From: "Al Williams" <alwilliams@olywa.net> Subject: [TowerTalk] Vertical Moxon antenna for 40m field day To: <towertalk@contesting.com> Cc: Rich Pa
/archives//html/Towertalk/2006-04/msg00319.html (9,540 bytes)

57. Re: [TowerTalk] TowerTalk Digest, Vol 42, Issue 18 (score: 1)
Author: "Dudley Chapman" <chief@thechief.com>
Date: Thu, 8 Jun 2006 14:08:42 -0400
Gary, You are probably already aware of this but I will offer it anyway just in case. There is a rule of thumb about the minimum distance between ground rods. It has to do with the fact that spacing
/archives//html/Towertalk/2006-06/msg00128.html (9,670 bytes)

58. Re: [TowerTalk] Elevated Vertical with No Radials on Metal Roof (score: 1)
Author: "Dudley Chapman" <chief@thechief.com>
Date: Thu, 17 Aug 2006 16:58:37 -0400
I second the notion that a non-resonant metal roof that is off the ground might be a liability rather than an asset for a quarter wave vertical. The metal roof would be modeled as a large number of n
/archives//html/Towertalk/2006-08/msg00557.html (8,845 bytes)

59. [TowerTalk] HELP, Steve? Anyone? Comcast bouncing TT (score: 1)
Author: "Dudley Chapman" <chief@thechief.com>
Date: Mon, 28 Aug 2006 15:36:21 -0400
JC writes..... Message: 8 Date: Mon, 28 Aug 2006 10:47:22 -0700 From: "JC Smith" <jc-smith@comcast.net> Subject: [TowerTalk] HELP, Steve? Anyone? Comcast bouncing TT messages To: <towertalk@contestin
/archives//html/Towertalk/2006-08/msg01006.html (8,372 bytes)

60. Re: [TowerTalk] TowerTalk Digest, Vol 47, Issue 7 (score: 1)
Author: "Dudley Chapman" <chief@thechief.com>
Date: Fri, 3 Nov 2006 08:58:16 -0500
Message: 2 Date: Thu, 02 Nov 2006 20:49:13 -0600 From: "John Barrett" <ke5crp@verizon.net> Subject: [TowerTalk] Homebrew Tower for 500lbs load help needed To: <towertalk@contesting.com> Message-ID: <
/archives//html/Towertalk/2006-11/msg00058.html (9,190 bytes)


This search system is powered by Namazu