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1. [TowerTalk] Antenna Model collections in .NEC & .EZ format (score: 1): Author: cebik@utkux.utcc.utk.edu (L. B. Cebik); Date: Mon, 1 Nov 1999 06:50:15 -0500 (EST); There has been a need for exemplary models for both newer and experienced antenna modelers. I have gleaned from my accumulation sets of models that may serve as a foundation for modelers to build upo; /archives//html/Towertalk/1999-11/msg00004.html (8,811 bytes)
2. [TowerTalk] Further on the collections (score: 1): Author: cebik@utkux.utcc.utk.edu (L. B. Cebik); Date: Mon, 1 Nov 1999 10:57:48 -0500 (EST); I have had some questions about the collections of .EZ and .NEC files that may be more general in interest. 1. The files are for NEC-2 and other advanced NEC cores. THey are not designed for MININEC; /archives//html/Towertalk/1999-11/msg00013.html (9,694 bytes)
3. [TowerTalk] A program to measure the polar diagram of a beam antenna (fwd) (score: 1): Author: cebik@utkux.utcc.utk.edu (L. B. Cebik); Date: Sun, 7 Nov 1999 21:01:17 -0500 (EST); I am passing along the following message from Bob Greeth, G4HFQ, for general interest. The documentation for the polar plot program can be downloaded from Bob's site, in case anyone would wish to hav; /archives//html/Towertalk/1999-11/msg00140.html (8,258 bytes)
4. [TowerTalk] Vibrating concrete (score: 1): Author: cebik@utkux.utcc.utk.edu (L. B. Cebik); Date: Mon, 8 Nov 1999 17:15:15 -0500 (EST); The process is very much like what happens to soils during an earthquake, but on a micro scale by comparison (thank goodness). -73- LB, W4RNL -- FAQ on WWW: http://www.contesting.com/towertalkfaq.htm; /archives//html/Towertalk/1999-11/msg00156.html (6,835 bytes)
5. [TowerTalk] W4RNL site missing? (score: 1): Author: cebik@utkux.utcc.utk.edu (L. B. Cebik); Date: Mon, 8 Nov 1999 17:59:53 -0500 (EST); -- Kris, Sorry, the site has been down during the day today for an upgrade of server software. It should be back in service by tomorrow AM--or perhaps even by this evening. I regret any inconvenienc; /archives//html/Towertalk/1999-11/msg00159.html (8,013 bytes)
6. [TowerTalk] Metal Roofs and Antennas (score: 1): Author: cebik@utkux.utcc.utk.edu (L. B. Cebik); Date: Wed, 10 Nov 1999 08:21:00 -0500 (EST); A metal garage roof is not likely to affect beam performance with a 60' vertical spacing and the small area involved. However, careful attention to bonding the material into a single sheet (electrica; /archives//html/Towertalk/1999-11/msg00185.html (8,207 bytes)
7. [TowerTalk] network tuner losses (score: 1): Author: cebik@utkux.utcc.utk.edu (L. B. Cebik); Date: Wed, 17 Nov 1999 05:43:56 -0500 (EST); Network tuner losses can be roughly divided into two groups: 1. basic network losses, and 2. inadequate component losses. 1.Every network will show a loss factor (called "delta" by Terman) that is a; /archives//html/Towertalk/1999-11/msg00355.html (10,354 bytes)
8. [TowerTalk] Yagi versus Log Periodic (score: 1): Author: cebik@utkux.utcc.utk.edu (L. B. Cebik); Date: Sat, 2 Oct 1999 09:56:37 -0400 (EDT); I can report what K9LA reported in the modeling graphs he presented in his article in the latest (V. 6) of the Antenna Compendium series. On 20, the gain looks to be 4-4.5 dBi free space. On 18, a bi; /archives//html/Towertalk/1999-10/msg00017.html (11,056 bytes)
9. [TowerTalk] LPDA gain figures (score: 1): Author: cebik@utkux.utcc.utk.edu (L. B. Cebik); Date: Wed, 6 Oct 1999 22:03:39 -0400 (EDT); K9LA was referring to information on gain calculations that appears almost verbatim to his account in the 3rd Edition of the Antenna Engineer's Handbook (known as Johnson and Jasik). The techical so; /archives//html/Towertalk/1999-10/msg00147.html (12,411 bytes)
10. [TowerTalk] Site updates related to LPDA models (score: 1): Author: cebik@utkux.utcc.utk.edu (L. B. Cebik); Date: Thu, 7 Oct 1999 07:36:51 -0400 (EDT); I have updated the item on LPCAD LPDA Designs and NEC Models by adding a further note at the end. In addition, I have recently added 2 other LPDA items to the modeling section of the index: one on sp; /archives//html/Towertalk/1999-10/msg00157.html (7,814 bytes)
11. [TowerTalk] Site update and book release (score: 1): Author: cebik@utkux.utcc.utk.edu (L. B. Cebik); Date: Wed, 13 Oct 1999 10:03:43 -0400 (EDT); I have updated the main page of my site to reflect the announcement of the new book, Basic Antenna Modeling: A Hands-On Tutorial, which will be available from Nittany Scientific after October 31. The; /archives//html/Towertalk/1999-10/msg00366.html (8,111 bytes)
12. [TowerTalk] Lexan and element linkage (score: 1): Author: cebik@utkux.utcc.utk.edu (L. B. Cebik); Date: Tue, 19 Oct 1999 22:33:29 -0400 (EDT); On a home improvement show, I saw/heard reference to the use of Lexan as a window pane material in Florida as a shatter-resistant material for hurricane-prone areas. 1. I wonder if this application o; /archives//html/Towertalk/1999-10/msg00586.html (8,797 bytes)
13. [TowerTalk] More LPDA stuff (score: 1): Author: cebik@utkux.utcc.utk.edu (L. B. Cebik); Date: Fri, 22 Oct 1999 10:26:12 -0400 (EDT); I have added to the site, under the LPDA collection, some notes comparing Vee-element and straight element LPDA designs and on the effect of element diameter, comparing #14 wire and 0.5" tubing eleme; /archives//html/Towertalk/1999-10/msg00643.html (7,271 bytes)
14. [TowerTalk] site updates (score: 1): Author: cebik@utkux.utcc.utk.edu (L. B. Cebik); Date: Fri, 17 Sep 1999 09:59:33 -0400 (EDT); Since Sept 1 (official retirement date) I have updated a few things at the site, including the latest columns in the An-Ten-Ten-nas, Antennas Also, I have updated the "Phased Yagi" VHF entry to inclu; /archives//html/Towertalk/1999-09/msg00394.html (7,896 bytes)
15. [TowerTalk] Modeling LPDAs from LPCAD (score: 1): Author: cebik@utkux.utcc.utk.edu (L. B. Cebik); Date: Sun, 26 Sep 1999 10:01:25 -0400 (EDT); I have just added a note (in the modeling section of the index) on translating LPDA designs from LPCAD (Roger Cox's very popular program) into NEC models. From some correpondence and reading over the; /archives//html/Towertalk/1999-09/msg00599.html (7,491 bytes)
16. [TowerTalk] Small Beam Series updated (score: 1): Author: cebik@utkux.utcc.utk.edu (L. B. Cebik); Date: Sun, 1 Aug 1999 10:33:06 -0400 (EDT); The small beams series that I initially scanned has now been replaced with HTML texts for easier reading and faster downloading. I have had to use scanned figures, so they will not be as crisp as oth; /archives//html/Towertalk/1999-08/msg00001.html (7,797 bytes)
17. [TowerTalk] Multi-banding Moxon Rectangles (score: 1): Author: cebik@utkux.utcc.utk.edu (L. B. Cebik); Date: Fri, 13 Aug 1999 16:44:39 -0400 (EDT); I have had a number of inquiries about possibilities for developing a multi-band antenna from a core Moxon rectangle. There is now a note--in the Moxon index page listed on the main page--on a couple; /archives//html/Towertalk/1999-08/msg00233.html (7,378 bytes)
18. [TowerTalk] Dual-Rhomboid Modeling (score: 1): Author: cebik@utkux.utcc.utk.edu (L. B. Cebik); Date: Sat, 14 Aug 1999 10:50:01 -0400 (EDT); I have placed some initial notes on modeling the dual rhomboid (the Laport rhombic) at my site. Part 1 restricts itself to modeling issues and the version of the antenna from QST, Mar, 1997. I hope t; /archives//html/Towertalk/1999-08/msg00242.html (7,446 bytes)
19. [TowerTalk] dual rhomboid update (score: 1): Author: cebik@utkux.utcc.utk.edu (L. B. Cebik); Date: Sun, 15 Aug 1999 20:29:05 -0400 (EDT); I have added two additional notes to the dual rhomboid collection--one on versions "closer" to the Laport dimensions and the other on standard of comparison for the dual rhomboid. I hope they are use; /archives//html/Towertalk/1999-08/msg00250.html (7,330 bytes)
20. [TowerTalk] Thanks (score: 1): Author: cebik@utkux.utcc.utk.edu (L. B. Cebik); Date: Fri, 20 Aug 1999 10:10:35 -0400 (EDT); This is Aug. 20, the second anniversary of adding the counter to my site. Year 1 brought about 30,000 visits to the site. Right now, the counter reads 89,600+, meaning another 59,000 visits to the si; /archives//html/Towertalk/1999-08/msg00339.html (7,369 bytes)

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