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121. [TowerTalk] 3EL QUAD ANALYSIS (score: 1): Author: cebik@utkux.utcc.utk.edu (L. B. Cebik); Date: Sat, 13 Jun 1998 22:01:07 -0400 (EDT); ON7NQ, Danny Mees, has done extensive modeling work on the 3-element 5-band Cubex quad, optimizing it for separate feed to avoid some of the problems associated with combined feed. His e-mail address; /archives//html/Towertalk/1998-06/msg00468.html (9,877 bytes)
122. [TowerTalk] Site additions (score: 1): Author: cebik@utkux.utcc.utk.edu (L. B. Cebik); Date: Tue, 16 Jun 1998 11:15:25 -0400 (EDT); In answer to some requests, I have added a new category under the "Miscellaneous" heading called education. It contains the casual pieces I have contributed to the ARRL National Education Workshop pr; /archives//html/Towertalk/1998-06/msg00564.html (7,997 bytes)
123. [TowerTalk] HB9CV (score: 1): Author: cebik@utkux.utcc.utk.edu (L. B. Cebik); Date: Tue, 23 Jun 1998 05:54:14 -0400 (EDT); Feri, The basic information is in Rothammel's Antennenbuch, with formulas for both 300 ohm and 75-ohm phasing lines. The book has been put into a second edition and is available from a German publish; /archives//html/Towertalk/1998-06/msg00794.html (8,009 bytes)
124. [TowerTalk] HB9CV/TET Antennas (score: 1): Author: cebik@utkux.utcc.utk.edu (L. B. Cebik); Date: Tue, 23 Jun 1998 06:06:22 -0400 (EDT); One of the reasons why so little has been done in expanding the HB9CV/ZL Special phased dipole pair into multi-element arrays (with directors for gain) is that so little is gained relative to a Yagi; /archives//html/Towertalk/1998-06/msg00795.html (8,376 bytes)
125. [TowerTalk] Re: is Phosphor Bronze really better? (score: 1): Author: cebik@utkux.utcc.utk.edu (L. B. Cebik); Date: Thu, 25 Jun 1998 21:35:39 -0400 (EDT); Phospher bronze was once easier to obtain than copper and was the ham builder's material of choice for some applications that had to have a degree of self-support. Apparently, it was easy to obtain i; /archives//html/Towertalk/1998-06/msg00928.html (7,530 bytes)
126. [TowerTalk] (Long)MFJ259B & PL-259/SO-239 Pair Losses (score: 1): Author: cebik@utkux.utcc.utk.edu (L. B. Cebik); Date: Sun, 28 Jun 1998 22:06:50 -0400 (EDT); For minimal loss in systems that can effectively replace coax with parallel transmission line (and not all can), I would suggest open-wire 600-ohm line rather than any of the more convenient but sli; /archives//html/Towertalk/1998-06/msg00977.html (8,946 bytes)
127. [TowerTalk] stack notes (a bit long) (score: 1): Author: cebik@utkux.utcc.utk.edu (L. B. Cebik); Date: Fri, 1 May 1998 07:48:14 -0400 (EDT); Jay has added some important notes on the practical side of stacking. In fact, his disclaimer concerning the switches he sells is probably not warranted: for stacks, either his or a comparable switch; /archives//html/Towertalk/1998-05/msg00008.html (13,205 bytes)
128. [TowerTalk] Re: Quads not as good as Yagis (score: 1): Author: cebik@utkux.utcc.utk.edu (L. B. Cebik); Date: Tue, 5 May 1998 06:36:10 -0400 (EDT); In addition, since the quad is, from one perspective, a vertically stacked array, its elevation angle of maximum radiation is equaivalent to a planar antenna at a point about 60% or so up from the b; /archives//html/Towertalk/1998-05/msg00165.html (9,822 bytes)
129. [TowerTalk] Re: Quads not as good as Yagis (score: 1): Author: cebik@utkux.utcc.utk.edu (L. B. Cebik); Date: Tue, 5 May 1998 08:57:20 -0400 (EDT); L. B. Cebik, W4RNL /\ /\ * / / / (Off)(423) 974-7215 1434 High Mesa Drive / \/ \/\ --/\-- (Hm) (423) 938-6335 Knoxville, Tennessee /\ \ \ \ / / || / (FAX)(423) 974-3509 37938-4443 USA / \ \ \ \ || ce; /archives//html/Towertalk/1998-05/msg00173.html (9,670 bytes)
130. [TowerTalk] Hole Alignments (score: 1): Author: cebik@utkux.utcc.utk.edu (L. B. Cebik); Date: Mon, 18 May 1998 12:40:53 -0400 (EDT); To measure half-way around a tube, take a piece of paper and wrap it around the tube, marking the overlap point. Now fold the paper in half between marked points, and make a mark on the fold crease.; /archives//html/Towertalk/1998-05/msg00450.html (9,480 bytes)
131. [TowerTalk] 40 Meter Wire Beam Opinions?!? (score: 1): Author: cebik@utkux.utcc.utk.edu (L. B. Cebik); Date: Sat, 23 May 1998 19:49:02 -0400 (EDT); Wire beams do indeed work. Inverted Vee versions of the same beams also work, but with reductions in gain and a wider beamwidth than the same design level at the highest point of the Vee. Vees may no; /archives//html/Towertalk/1998-05/msg00610.html (9,099 bytes)
132. [TowerTalk] notes on Yagi matches (score: 1): Author: cebik@utkux.utcc.utk.edu (L. B. Cebik); Date: Sat, 4 Apr 1998 07:18:57 -0500 (EST); Several notes from very different source recently set up a theme question for me. The theme seemed to be something like this: I'll take less gain from my Yagi to be able to have a direct 50-ohm feed; /archives//html/Towertalk/1998-04/msg00097.html (8,992 bytes)
133. [TowerTalk] 12/17m duoband yagi.. (score: 1): Author: cebik@utkux.utcc.utk.edu (L. B. Cebik); Date: Tue, 7 Apr 1998 07:22:28 -0400 (EDT); Another alternative: since 12 and 17 are narrow bands, 2-element Yagis of DE-Dir design are feasible. With their shorter boom requirements, gthey can be placed back-to-back on one boom. If you feed t; /archives//html/Towertalk/1998-04/msg00156.html (8,225 bytes)
134. [TowerTalk] Old Mosely Antenna (fwd) (score: 1): Author: cebik@utkux.utcc.utk.edu (L. B. Cebik); Date: Wed, 8 Apr 1998 04:43:06 -0400 (EDT); I am forwarding the following, in case anyone is familiar with the antenna in question. Please send any replies directly to Don Tucker--he will appreciate any help you can give. -73- LB, W4RNL I have; /archives//html/Towertalk/1998-04/msg00195.html (7,823 bytes)
135. [TowerTalk] Natual "V" Dipole (score: 1): Author: cebik@utkux.utcc.utk.edu (L. B. Cebik); Date: Sun, 12 Apr 1998 09:11:55 -0400 (EDT); Actually, the pattern for a Vee is an oval, with some few dB down off the ends, but less down than a dipole. For any given peak height, the Vee will be more circular than a dipole, but even at a quar; /archives//html/Towertalk/1998-04/msg00312.html (9,758 bytes)
136. [TowerTalk] Vertical vs. horizontal Yagis (score: 1): Author: cebik@utkux.utcc.utk.edu (L. B. Cebik); Date: Sat, 18 Apr 1998 20:47:32 -0400 (EDT); Because I have had a number of inquiries related to differences between orienting a Yagi vertically as opposed to orienting it horizontally--and because it is a bit hard to explain some of the differ; /archives//html/Towertalk/1998-04/msg00504.html (7,567 bytes)
137. [TowerTalk] junk search--but special junk (score: 1): Author: cebik@utkux.utcc.utk.edu (L. B. Cebik); Date: Sun, 19 Apr 1998 06:48:01 -0400 (EDT); A while back, I requested help on searching out some junked ground plane rod assemblies. Thanks to Henry Pollock, K4TMC, I now know the specific item I used and could use more of. They are the two pi; /archives//html/Towertalk/1998-04/msg00512.html (9,029 bytes)
138. [TowerTalk] Chokes on Dipoles (score: 1): Author: cebik@utkux.utcc.utk.edu (L. B. Cebik); Date: Wed, 29 Apr 1998 10:13:01 -0400 (EDT); Lee, Chokes at the feedpoint of dipoles and other simple antennas reduce the level of common mode currents that a. get into gear or on their surfaces and b. radiate from the feedline, thus distiring; /archives//html/Towertalk/1998-04/msg00894.html (8,809 bytes)
139. [TowerTalk] dipole bandwidth (score: 1): Author: cebik@utkux.utcc.utk.edu (L. B. Cebik); Date: Wed, 29 Apr 1998 12:25:33 -0400 (EDT); Pete, Dave Leeson ran this by the list in a post, and subsequently, I did some mdeling on the idea, with the results at my web site. Actually, Dave's broadbanding system ran 1/2 wl of 50 ohm and inse; /archives//html/Towertalk/1998-04/msg00911.html (7,812 bytes)
140. [TowerTalk] C-3 & TH7 comparison - a revision (score: 1): Author: cebik@utkux.utcc.utk.edu (L. B. Cebik); Date: Wed, 29 Apr 1998 17:21:58 -0400 (EDT); If all someone needs is a better take-off angle, that is, lower, then a stack is detrimental, since the antenna pair actually raise the TO angle relative to the TO angle of the upper antenna alone.; /archives//html/Towertalk/1998-04/msg00931.html (9,548 bytes)

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