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341. [TowerTalk] Vertical vs. Low Beam? (score: 1): Author: cebik@utkux.utcc.utk.edu (L. B. Cebik); Date: Fri, 21 Mar 1997 21:09:30 -0500 (EST); Doug, As a rule of thumb, you can use the following numbers: a horizontal antenna at 1/2 wl height has an elevation angle of maximum radiation (take-off angle) of 25-26 degrees with about a +/-8 - 10; /archives//html/Towertalk/1997-03/msg00346.html (9,608 bytes)
342. [TowerTalk] insulated wire wrapped-back (score: 1): Author: cebik@utkux.utcc.utk.edu (L. B. Cebik); Date: Sat, 22 Mar 1997 20:27:56 -0500 (EST); In some ways the insulated fold and wrap-back of wire is convenient and not a major problem--if the wrap is mechanically sound. The wrap, although a coil, is at the end of the antenna where it does l; /archives//html/Towertalk/1997-03/msg00362.html (9,660 bytes)
343. [TowerTalk] March 24th (score: 1): Author: cebik@utkux.utcc.utk.edu (L. B. Cebik); Date: Mon, 24 Mar 1997 06:42:26 -0500 (EST); With all the talk of the owls, Atlanta dome, and artillary shell adaptations, I am suffering shell shock, gold fever, dummy-itis, and feared my sanity--until I realized that this is the day of the fu; /archives//html/Towertalk/1997-03/msg00425.html (6,981 bytes)
344. [TowerTalk] EZNEC Model Repository (score: 1): Author: cebik@utkux.utcc.utk.edu (L. B. Cebik); Date: Tue, 25 Mar 1997 07:30:54 -0500 (EST); Have followed the interest in having a repository of EZNEC models of both commercial and noncommercial beams. There are, of course, two (now 3, with EZNEC Pro) ways to handle this: 1. UUencoded EZNEC; /archives//html/Towertalk/1997-03/msg00496.html (8,794 bytes)
345. [TowerTalk] EZNEC Model Repository (fwd) (score: 1): Author: cebik@utkux.utcc.utk.edu (L. B. Cebik); Date: Tue, 25 Mar 1997 20:02:25 -0500 (EST); There are already two or three repositories for antenna files with links from the HyGain web page. There just doesn't happen to be one there for the TH6DX. -- Received the above and do not want to re; /archives//html/Towertalk/1997-03/msg00521.html (7,164 bytes)
346. [TowerTalk] antenna element modeling (long, delete if irrelevant) (score: 1): Author: cebik@utkux.utcc.utk.edu (L. B. Cebik); Date: Fri, 28 Mar 1997 11:06:14 -0500 (EST); Having looked at a large number of models, some ftp, some sent directly to me, I thought the following notes might be useful. Delete now if outside your interests. I shall place them at my website, w; /archives//html/Towertalk/1997-03/msg00665.html (15,709 bytes)
347. [TowerTalk] .NEC input files (score: 1): Author: cebik@utkux.utcc.utk.edu (L. B. Cebik); Date: Sat, 29 Mar 1997 06:41:36 -0500 (EST); To EZNEC users, I have had a few questions regarding standard form .NEC input files, which have a quite different appearance than the antenna description file produced by EZNEC. Since these files are; /archives//html/Towertalk/1997-03/msg00685.html (8,158 bytes)
348. [TowerTalk] MARC -- GRAND ANNOUNCEMENT -- a commercial message (score: 1): Author: cebik@utkux.utcc.utk.edu (L. B. Cebik); Date: Sat, 29 Mar 1997 10:01:48 -0500 (EST); I have had the privilege of checking out a beta version of this program and found it very revealing (mostly of my ignorance, but that is a plus for the program). A worthy addition to the utilities yo; /archives//html/Towertalk/1997-03/msg00690.html (7,688 bytes)
349. [TowerTalk] 2 towers/2beams phased (score: 1): Author: cebik@utkux.utcc.utk.edu (L. B. Cebik); Date: Sat, 29 Mar 1997 10:03:21 -0500 (EST); Joe, AO input files should be ASCII and thus can be included in the body of the message or as a readable attachment. Would like a copy of them. I believe a few years ago, but not all that many, K6STI; /archives//html/Towertalk/1997-03/msg00691.html (9,588 bytes)
350. [TowerTalk] Re: .NEC input files (score: 1): Author: cebik@utkux.utcc.utk.edu (L. B. Cebik); Date: Sun, 30 Mar 1997 07:55:56 -0500 (EST); In my notice of information available about reading NEC decks, I was in error about the use of a NEC deck within NEC-2 versions of EZNEC. Roy Lewallen has correct me with the following information: "; /archives//html/Towertalk/1997-03/msg00699.html (7,095 bytes)
351. [TowerTalk] Modeling traps (score: 1): Author: cebik@utkux.utcc.utk.edu (L. B. Cebik); Date: Mon, 31 Mar 1997 10:52:15 -0500 (EST); A small number of folks have either raised questions to me about modeling trap antennas or have expressed doubts that they could. Actually, modeling traps is a straightforward process, but with a pit; /archives//html/Towertalk/1997-03/msg00719.html (7,493 bytes)
352. Tennadyne log periodics (score: 1): Author: cebik@utkux.utcc.utk.edu (L. B. Cebik); Date: Sat, 8 Feb 1997 21:01:34 -0500 (EST); I understand that there were several postings on Tennadyne log periodics prior to my subscribing to the list. If anyone has saved any copies in file of any of those postings, I would be very apprecia; /archives//html/Towertalk/1997-02/msg00166.html (7,078 bytes)
353. My request for Tennadyne posts (score: 1): Author: cebik@utkux.utcc.utk.edu (L. B. Cebik); Date: Mon, 10 Feb 1997 06:47:07 -0500 (EST); Many thanks to those who have sent me past posts on Tennadyne log periodics. I have what I believe to be a complete set, and I thank the very helpful members of this list who sent them, along with so; /archives//html/Towertalk/1997-02/msg00193.html (7,614 bytes)
354. Stacks and SWR (score: 1): Author: cebik@utkux.utcc.utk.edu (L. B. Cebik); Date: Wed, 12 Feb 1997 08:27:38 -0500 (EST); Some beam stackers have experienced a rise in SWR if the beams are pointed in opposite directions. Others have not. The degree of SWR rise was not specified. To shed some light on this question, I ra; /archives//html/Towertalk/1997-02/msg00265.html (11,453 bytes)
355. Stacks and SWR (score: 1): Author: cebik@utkux.utcc.utk.edu (L. B. Cebik); Date: Wed, 12 Feb 1997 10:50:58 -0500 (EST); Jay's message about the 26.6 dBi, 62 dB F-B beam suggests to me that perhaps some e-mail readers may have skewed my columns. The correct version (for the Free Space) model is TO angle Gain (dBi) F-B; /archives//html/Towertalk/1997-02/msg00268.html (8,487 bytes)
356. Misphasing stacks (score: 1): Author: cebik@utkux.utcc.utk.edu (L. B. Cebik); Date: Wed, 12 Feb 1997 20:56:08 -0500 (EST); Misphasing of stacked beams: There are two questions one can ask. 1. Is something wrong when stacked beams are misphased? 2. Can I do anything useful by reversing the phase of one of a stack of beams; /archives//html/Towertalk/1997-02/msg00283.html (11,919 bytes)
357. Titanix vs. CTSVR vs. Hy-tower (score: 1): Author: cebik@utkux.utcc.utk.edu (L. B. Cebik); Date: Thu, 13 Feb 1997 07:42:47 -0500 (EST); Jim, I do not have data on the particular antennas you are comparing, but a couple of notes relative to some of your considerations might be useful. 1. Elevated feed on a vertical: The idea of elevat; /archives//html/Towertalk/1997-02/msg00291.html (11,913 bytes)
358. stacked beam patterns (score: 1): Author: cebik@utkux.utcc.utk.edu (L. B. Cebik); Date: Thu, 13 Feb 1997 09:41:40 -0500 (EST); The notes I posted on stacked beams are based on NEC-4 data and patterns. Since some of the data is difficult to visualize, I have placed both sets of notes together--along with a number of elevation; /archives//html/Towertalk/1997-02/msg00294.html (7,431 bytes)
359. Phasing in stacks (score: 1): Author: cebik@utkux.utcc.utk.edu (L. B. Cebik); Date: Thu, 13 Feb 1997 11:51:08 -0500 (EST); Fred, Flipping one antenna is no problem (a modeler just sets one up from minus to plus and the other plus to minus). However, that is equivalent to 180 degree phase reversal between the two. Althoug; /archives//html/Towertalk/1997-02/msg00298.html (7,016 bytes)
360. Stack request (score: 1): Author: cebik@utkux.utcc.utk.edu (L. B. Cebik); Date: Sat, 15 Feb 1997 07:46:00 -0500 (EST); The little bit of modeling I did on stacks to satisfy my curiosity about BIP-BOP (which becomes rag mop when more than 2 are involved) has, of course, aroused further curiosity, aided and abetted by; /archives//html/Towertalk/1997-02/msg00334.html (8,504 bytes)

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