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Total 11 documents matching your query.

1. [TenTec] Zepp (score: 1): Author: Marty Hartwell <mhartwe@gmail.com>; Date: Mon, 15 Sep 2014 10:49:54 -0500; Hi I was reading the posts concerning the Zeppelin antenna. I did a search on the web and got some picture drawings showing what I am familiar with. Also someone said it was a trailing wire antenna,; /archives//html/TenTec/2014-09/msg00199.html (7,780 bytes)
2. Re: [TenTec] Zepp (score: 1): Author: "Bob McGraw - K4TAX" <RMcGraw@Blomand.net>; Date: Mon, 15 Sep 2014 14:04:14 -0500; In review of the ARRL Handbook, Ed. 2014, Chapter 21.7, there are clearly two distinct examples of Zepp antennas. One being 1/2 wavelength and end fed with open wire line and the 2nd being a center f; /archives//html/TenTec/2014-09/msg00201.html (11,601 bytes)
3. Re: [TenTec] Zepp (score: 1): Author: k6jek <k6jek@comcast.net>; Date: Mon, 15 Sep 2014 12:40:35 -0700; The latest QST has an interesting EDZ beam. It has a discontinuous reflector, actually two reflectors, one for each half. William Alsup, N6XMW, modeled it with EZNEC. The model predicts 6 dBd. That i; /archives//html/TenTec/2014-09/msg00202.html (12,276 bytes)
4. Re: [TenTec] Zepp (score: 1): Author: "Rick - DJ0IP / NJ0IP" <Rick@DJ0IP.de>; Date: Mon, 15 Sep 2014 22:39:11 +0200; Bob, I want to modify slightly: 468/f gives us the APPROXIMATE resonant length. NEVER CUT FOR THIS LENGTH. Always cut a little longer, fold back the ends to adjust to this calculated length - then me; /archives//html/TenTec/2014-09/msg00203.html (12,606 bytes)
5. Re: [TenTec] Zepp (score: 1): Author: "Bob McGraw - K4TAX" <RMcGraw@Blomand.net>; Date: Mon, 15 Sep 2014 16:11:05 -0500; Yes Rick. There are a couple of factors not clearly stated. In using the 468 number it does account for K factor which is the ratio of conductor diameter to wavelength. However, the 468 does also pre; /archives//html/TenTec/2014-09/msg00205.html (15,243 bytes)
6. Re: [TenTec] Zepp (score: 1): Author: "Rick - DJ0IP / NJ0IP" <Rick@DJ0IP.de>; Date: Tue, 16 Sep 2014 06:35:07 +0200; BOB, we were in sync until your last paragraph! You said, move it up or down until you get lowest SWR. If you meant for the purpose of a scientific experiment, OK. Otherwise, the height should be cho; /archives//html/TenTec/2014-09/msg00215.html (18,088 bytes)
7. Re: [TenTec] Zepp (score: 1): Author: Ken Brown <ken.d.brown@hawaiiantel.net>; Date: Mon, 15 Sep 2014 18:43:31 -1000; Any center fed straight wire is a dipole, regardless of how it's length compares the the wavelength you are using it on. If I build a dipole to be a half wavelength on 7 MHz, and then use it on 10.1; /archives//html/TenTec/2014-09/msg00216.html (8,055 bytes)
8. Re: [TenTec] Zepp (score: 1): Author: Steve Hunt <steve@karinya.net>; Date: Tue, 16 Sep 2014 18:53:40 +0100; From IEEE Standard Definitions of Terms for Antennas: "2.102 dipole antenna. Any one of a class of antennas producing a radiation pattern approximating that of an elementary electric dipole. Syn: dou; /archives//html/TenTec/2014-09/msg00220.html (9,221 bytes)
9. Re: [TenTec] Zepp (score: 1): Author: Ken Brown <ken.d.brown@hawaiiantel.net>; Date: Tue, 16 Sep 2014 18:03:06 -1000; By that definition, since they used the word "approximating" the length could vary over a very wide range, and still fit the definition. When you make a dipole very short the radiation pattern does n; /archives//html/TenTec/2014-09/msg00228.html (10,589 bytes)
10. Re: [TenTec] Zepp (score: 1): Author: Steve Hunt <steve@karinya.net>; Date: Wed, 17 Sep 2014 08:48:33 +0100; Agreed! It also discredits the notion that: "Any center fed straight wire is a dipole, regardless of how it's length compares the the wavelength you are using it on." Steve G3TXQ N6KB _______________; /archives//html/TenTec/2014-09/msg00229.html (8,349 bytes)
11. Re: [TenTec] Zepp (score: 1): Author: Ken Brown <ken.d.brown@hawaiiantel.net>; Date: Wed, 17 Sep 2014 19:49:48 -1000; Touche'! Agreed! It also discredits the notion that: "Any center fed straight wire is a dipole, regardless of how it's length compares the the wavelength you are using it on." Steve G3TXQ That pretty; /archives//html/TenTec/2014-09/msg00237.html (8,666 bytes)

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