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Total 19 documents matching your query.

1. Topband: radial length (score: 1): Author: "Rudy Severns" <rudys@ordata.com>; Date: Mon, 2 Oct 2006 20:41:24 -0700; Tom and Jim's comments on radials are right on the mark. Some time back I scribbled a few notes on grid ground systems and the sizing of the grid. Although the subject is a grid system, the notes als; /archives//html/Topband/2006-10/msg00019.html (6,943 bytes)
2. Topband: Radial length (score: 1): Author: "Mike(W5UC) & Kathy(K5MWH)" <w5uc@cox.net>; Date: Tue, 3 Oct 2006 16:48:11 -0500; While reading all of the references that many of you kindly provided, a recurring theme kept popping up; that being that a very small number of very long radials essentially are ineffective. However,; /archives//html/Topband/2006-10/msg00023.html (7,128 bytes)
3. Re: Topband: Radial length (score: 1): Author: "Jim Brown" <jim@audiosystemsgroup.com>; Date: Tue, 03 Oct 2006 21:32:06 -0700; Of course not. Long radials do not detract from the performance of shorter ones. Rudy s work simply shows that for a given quantity of wire in the radial system, you get more bang for your buck near; /archives//html/Topband/2006-10/msg00028.html (7,852 bytes)
4. Re: Topband: radial length (score: 1): Author: Bill Tippett <btippett@alum.mit.edu>; Date: Wed, 04 Oct 2006 07:33:19 -0400; Hi Rudy, On page 3 of your ground screen grid article: http://www.antennasbyn6lf.com/files/ground_screen_grid_dimensions.pdf you state: We see that for this ground characteristic and frequency, 24" s; /archives//html/Topband/2006-10/msg00030.html (8,456 bytes)
5. Re: Topband: radial length (score: 1): Author: "Richard (Rick) Karlquist" <richard@karlquist.com>(by way of BillTippett <btippett@alum.mit.edu>); Date: Wed, 04 Oct 2006 13:24:01 -0400; I have a 230 foot diameter ground screen having 3'x3' squares. When I first built it, I put a 40 meter vertical in the middle of it and drove it against the center junction of the grid. The drive imp; /archives//html/Topband/2006-10/msg00035.html (7,706 bytes)
6. Re: Topband: radial length (score: 1): Author: Herb Schoenbohm <herbs@surfvi.com>; Date: Wed, 04 Oct 2006 13:52:12 -0400; Rick, That has been the belief in the broadcast industry for as long as I can remember. Every presentation at NAB and IEEE I have ever listened to or read seem to support the thesis that a 50x50 or 1; /archives//html/Topband/2006-10/msg00036.html (8,680 bytes)
7. Topband: radial length (score: 1): Author: robert briggs <vk3zl@bigpond.com>; Date: Thu, 05 Oct 2006 08:02:44 +1000; Over the years I have probably read most published articles re ground radials.Yes,wouldn't it be great for all of us to be able to install the ideal number of evenly spaced radials at the technically; /archives//html/Topband/2006-10/msg00041.html (8,524 bytes)
8. Re: Topband: radial length (score: 1): Author: "john battin" <jbattin@msn.com>; Date: Wed, 4 Oct 2006 17:59:37 -0500; One of the great things about radials, is that when you get beat-up in a pile-up, you can always go out and add a few more .... It always works, or at least it seems so. John k9dx ___________________; /archives//html/Topband/2006-10/msg00042.html (9,538 bytes)
9. Re: Topband: radial length (score: 1): Author: "Tom Rauch" <w8ji@contesting.com>; Date: Wed, 4 Oct 2006 19:29:53 -0400; That's interesting because Brown Lewis and Epstein concluded a screen does nothing with an adequate field of radials. We always used small screens around the tower base. It was mainly so people coul; /archives//html/Topband/2006-10/msg00043.html (8,752 bytes)
10. Re: Topband: radial length (score: 1): Author: herbs@surfvi.com; Date: Wed, 4 Oct 2006 20:42:23 -0400; Quoting Tom Rauch <w8ji@contesting.com>: over good ground, burying wires in every direction does little to change the near field FSM. I was a international sales type for Gates Radio (Gates-Harris-In; /archives//html/Topband/2006-10/msg00047.html (10,719 bytes)
11. Topband: Radial length (score: 1): Author: Peter Dougherty <w2irt@comcast.net>; Date: Wed, 29 Nov 2006 17:17:03 -0500; Hi all, My L goes up tomorrow (hopefully!), followed shortly by my radial "field." Other than putting my chiropractor on speed-dial, this afternoon I bought a 500' roll of #14 THHN at Home Despot. Wh; /archives//html/Topband/2006-11/msg00207.html (7,412 bytes)
12. Re: Topband: Radial length (score: 1): Author: Telegrapher9@aol.com; Date: Thu, 30 Nov 2006 10:29:06 EST; Peter, one long radial running under the horizontal section appears to be quite beneficial, at least in simulation. The other radials should be as about long as the vertical section is tall. The ques; /archives//html/Topband/2006-11/msg00216.html (7,253 bytes)
13. Re: Topband: Radial length (score: 1): Author: Peter Dougherty <w2irt@comcast.net>; Date: Thu, 30 Nov 2006 10:38:09 -0500; Actually, I will be running more than 500'. I have about 800 or 900' on hand (with the new spool) and I hope to get most of that down by the weekend. If I can get 1000' of #20 or 22 at a fair price I; /archives//html/Topband/2006-11/msg00217.html (8,522 bytes)
14. Re: Topband: Radial length (score: 1): Author: "EP Swynar" <gswynar@durham.net>; Date: Thu, 30 Nov 2006 16:07:51 -0500; On Thursday 30th November Peter wrote... 'round the back of the garage, then spread their ends out on the other side, would that be effective or a waste of copper? Hi Peter et al, Back in December 19; /archives//html/Topband/2006-11/msg00224.html (8,701 bytes)
15. Topband: Radial length (score: 1): Author: "Jim Monahan" <K1PX@msn.com>; Date: Thu, 30 Nov 2006 17:59:27 -0500; Al Christman, K3LC wrote a comprehensive article in the March/April 2004 issue of NCJ entitled: "Maximum-Gain Radial Ground Systems for Vertical Antennas" Data was derived from using NEC4 with #16 wi; /archives//html/Topband/2006-11/msg00228.html (8,969 bytes)
16. Topband: Radial length (score: 1): Author: Buzz Jehle <buzz@logi.us>; Date: Thu, 25 Oct 2018 21:58:59 +0000; I have an inverted L with 30 existing radials and I just acquired 1500 of 14 gauge copper insulated wire to add some more. SOme people say 1/8 wave is best bang for the buck versus 1/4 wave and now I; /archives//html/Topband/2018-10/msg00210.html (7,086 bytes)
17. Re: Topband: Radial length (score: 1): Author: donovanf@starpower.net; Date: Thu, 25 Oct 2018 18:47:59 -0400 (EDT); Hi Buzz, This topic has been examined in detail over the years, such as: http://www.w0btu.com/Optimum_number_of_ground_radials_vs_radial_length.html http://ncjweb.com/bonus-content/k3lcmaxgainradials; /archives//html/Topband/2018-10/msg00211.html (8,112 bytes)
18. Re: Topband: Radial length (score: 1): Author: Dan Maguire via Topband <topband@contesting.com>; Date: Fri, 26 Oct 2018 03:11:06 +0000 (UTC); Also see this 2004 NCJ article by Al Christman, K3LC. http://ncjweb.com/bonus-content/k3lcmaxgainradials.pdf Dan, AC6LA _________________ Searchable Archives: http://www.contesting.com/_topband - Top; /archives//html/Topband/2018-10/msg00212.html (7,225 bytes)
19. Re: Topband: Radial length (score: 1): Author: Raymond Benny <rayn6vr@gmail.com>; Date: Fri, 26 Oct 2018 10:35:53 -0700; Hello Buzz, I have a 72 ft irrigation pipe vertical, plus a 67 ft insulated drop wire 5 ft, spaced 18 in. away from the top for 80m. Both antennas are fed at the bottom with their own matching device; /archives//html/Topband/2018-10/msg00215.html (7,820 bytes)

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