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Total 367 documents matching your query.

141. [TowerTalk] Stacks-grounding-impressions (score: 1): Author: cebik@utkux.utcc.utk.edu (L. B. Cebik); Date: Thu, 30 Apr 1998 07:23:14 -0400 (EDT); Short note (well, short for me), since the beam builders have been silent. Several misconceptions floating on the fringe of the discussion. 1. Stacks give a big blob of energy, that is, a sort of dir; /archives//html/Towertalk/1998-04/msg00965.html (12,370 bytes)
142. [TowerTalk] Staggered Yagis--an update (score: 1): Author: cebik@utkux.utcc.utk.edu (L. B. Cebik); Date: Mon, 9 Mar 1998 12:39:19 -0500 (EST); In my web site notes on staggered Yagis, I looked at monotapered 3-el 20/15 meter Yagis and at versions with tapered elements. The required adjustments were not identical. At the time I only had time; /archives//html/Towertalk/1998-03/msg00137.html (7,790 bytes)
143. [TowerTalk] modeling note (score: 1): Author: cebik@utkux.utcc.utk.edu (L. B. Cebik); Date: Tue, 10 Mar 1998 21:47:51 -0500 (EST); This one is for those interested in modeling programs. Ran into some questions involving convergence testing of models using very fat elements (large diameters). Ran some systematic test models on MI; /archives//html/Towertalk/1998-03/msg00168.html (7,541 bytes)
144. [TowerTalk] How to Become an Antenna Guru (score: 1): Author: cebik@utkux.utcc.utk.edu (L. B. Cebik); Date: Fri, 13 Mar 1998 08:51:05 -0500 (EST); Dan Warren, an Air Force antenna engineer, has produced (and continues to enlarge) one of the very best compact treatment of antenna fundamentals that I have come across. His 3-D color pattern illust; /archives//html/Towertalk/1998-03/msg00235.html (7,810 bytes)
145. [TowerTalk] Half-square antenna question (score: 1): Author: cebik@utkux.utcc.utk.edu (L. B. Cebik); Date: Sat, 14 Mar 1998 06:30:02 -0500 (EST); Steve, The half-square essentially consists of 2 quarter wavelength vertical elements connected by a 1/2 wl phasing line. The feedpoint is at one or the other junction of the phase line with a vertic; /archives//html/Towertalk/1998-03/msg00258.html (8,771 bytes)
146. [TowerTalk] a little more on cloud burners (score: 1): Author: cebik@utkux.utcc.utk.edu (L. B. Cebik); Date: Sun, 15 Mar 1998 07:03:01 -0500 (EST); In answer to a request for some ideas on tilting the cloudburner pattern (straight up) because of a coastal location, I looked into several and discovered that a simple wire Yagi or Moxon (1/8 wl hei; /archives//html/Towertalk/1998-03/msg00272.html (7,585 bytes)
147. [TowerTalk] Drake MN-2000 (score: 1): Author: cebik@utkux.utcc.utk.edu (L. B. Cebik); Date: Tue, 17 Mar 1998 07:29:40 -0500 (EST); In general, it is usually not good practice to simply modify an 80-10 meter coupler for 160 meter operation (unless one wishes to replace everything inside and make a true 160 meter tuner). Although; /archives//html/Towertalk/1998-03/msg00298.html (8,780 bytes)
148. [TowerTalk] 2ele Yagi - driven element & director or reflector? (score: 1): Author: cebik@utkux.utcc.utk.edu (L. B. Cebik); Date: Fri, 20 Mar 1998 06:55:02 -0500 (EST); Con, The reason for the prevalence of DE-Ref 2-element beams is operating bandwidth. At the design center frequency, it is possible to achieve slightly higher gain and 17-20 dB F-B ratios from a DE-D; /archives//html/Towertalk/1998-03/msg00353.html (10,150 bytes)
149. [TowerTalk] Rods: assistance please (score: 1): Author: cebik@utkux.utcc.utk.edu (L. B. Cebik); Date: Sun, 22 Mar 1998 18:04:35 -0500 (EST); I'd like to tap the metal knowledge of the group to locate some satisfactory 1/4 and 3/16 rod material for some portable 10-meter antennas in the works. I have tried the material (T6061) normally ava; /archives//html/Towertalk/1998-03/msg00405.html (8,265 bytes)
150. [TowerTalk] expansion of ATU/Delta item (score: 1): Author: cebik@utkux.utcc.utk.edu (L. B. Cebik); Date: Wed, 25 Mar 1998 17:35:00 -0500 (EST); I have expanded the item at the web site on ATUs, Delta, and Losses to include some further information to clarify the differences between delta (network Q) and component (largely inductor) Q. Hope i; /archives//html/Towertalk/1998-03/msg00495.html (7,358 bytes)
151. [TowerTalk] K1TTT Web site (score: 1): Author: cebik@utkux.utcc.utk.edu (L. B. Cebik); Date: Sun, 1 Feb 1998 08:32:15 -0500 (EST); I have added a link to David Robbins' website, specifically to his technical notes, from my own site. Not having a link has been an unforgivable oversight, since David has gathered together a combina; /archives//html/Towertalk/1998-02/msg00003.html (8,202 bytes)
152. [TowerTalk] Correction on K1TTT site URL (score: 1): Author: cebik@utkux.utcc.utk.edu (L. B. Cebik); Date: Sun, 1 Feb 1998 09:47:02 -0500 (EST); Thanks to Bob, N8YGG, and Alan, 8P9BM, for pointing out my typo in the URL for the K1TTT resource site. Make that http://www.berkshire.net/~robbins/technote/techref.html "Technote" is singular in th; /archives//html/Towertalk/1998-02/msg00006.html (8,074 bytes)
153. [TowerTalk] K1TTT site (score: 1): Author: cebik@utkux.utcc.utk.edu (L. B. Cebik); Date: Sun, 1 Feb 1998 21:34:51 -0500 (EST); I had a few notes from folks who thought everyone knew of David Robbins' web site; by far more numerous were notes thanking me for pointing it out. Now do not thank me (although I appreciated the not; /archives//html/Towertalk/1998-02/msg00025.html (7,114 bytes)
154. [TowerTalk] A couple of minor site updates (score: 1): Author: cebik@utkux.utcc.utk.edu (L. B. Cebik); Date: Wed, 4 Feb 1998 10:02:12 -0500 (EST); I have placed a slightly expanded version of the note on "Don't Be Phased by Phasing," which appeared in the January, 98, QQ, at the site. It is not a how-to on phasing lines or networks, but a backg; /archives//html/Towertalk/1998-02/msg00127.html (7,873 bytes)
155. [TowerTalk] Balan tech lit - free (score: 1): Author: cebik@utkux.utcc.utk.edu (L. B. Cebik); Date: Thu, 5 Feb 1998 20:19:58 -0500 (EST); Jerry Sevick has two books on transmission line transformers, on published some years ago by ARRL, the other more recently by CQ Publications. Both are--or should be--required reading for understand; /archives//html/Towertalk/1998-02/msg00185.html (7,880 bytes)
156. [TowerTalk] Butterfly Beams (score: 1): Author: cebik@utkux.utcc.utk.edu (L. B. Cebik); Date: Fri, 6 Feb 1998 06:21:21 -0500 (EST); The other side of the coin on the HF5B. I have used one for over 10 years. In that time, I have changed local QTHs. I disassembled the elements from the boom and (thanks to a considerate mover) reass; /archives//html/Towertalk/1998-02/msg00194.html (10,561 bytes)
157. [TowerTalk] HB9CV update (score: 1): Author: cebik@utkux.utcc.utk.edu (L. B. Cebik); Date: Sun, 8 Feb 1998 10:10:35 -0500 (EST); I had never been completely satisfied with the models used to obtain anticipated results from the HB9CV design of a phased 2-element horizontal array. since the original posting, I have developed som; /archives//html/Towertalk/1998-02/msg00248.html (8,009 bytes)
158. [TowerTalk] The dumb kid returns. (score: 1): Author: cebik@utkux.utcc.utk.edu (L. B. Cebik); Date: Sun, 22 Feb 1998 07:01:25 -0500 (EST); Mike, At a certain point, you will have to balance all the advice you receive and add in some factors that are unique to your situation. Try the following for an example. 1. How much money are you wi; /archives//html/Towertalk/1998-02/msg00493.html (12,721 bytes)
159. [TowerTalk] Antenna Modeling (score: 1): Author: cebik@utkux.utcc.utk.edu (L. B. Cebik); Date: Thu, 26 Feb 1998 06:49:45 -0500 (EST); George, Steve, and all, You can find a collection of EZNEC models at Ray Anderson's NEC site. There is also a collection of NEC-Win format files at their site. Both sites are linked from mine--check; /archives//html/Towertalk/1998-02/msg00531.html (8,498 bytes)
160. [TowerTalk] Triband Evaluation Query (score: 1): Author: cebik@utkux.utcc.utk.edu (L. B. Cebik); Date: Mon, 5 Jan 1998 07:39:04 -0500 (EST); Mike, With three monobanders on different bands, you can use one of the antenna modeling programs to derive some initial estimates of the interactions (or lack of them). For each test set-up, model t; /archives//html/Towertalk/1998-01/msg00043.html (9,659 bytes)

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