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Total 8 documents matching your query.

1. [TowerTalk] halfwave verticals -Elevated (score: 1): Author: K7GCO@aol.com (K7GCO@aol.com); Date: Thu, 30 Aug 2001 13:16:51 EDT; << I tried to use a halfwave vertical with a parasitic reflector on the beach in Grand Cayman (ZF) two years ago. I fed my vertical in the center as a vertical dipole. I modeled it with AO, but when; /archives//html/Towertalk/2001-08/msg00695.html (11,579 bytes)
2. [TowerTalk] halfwave verticals -Elevated (score: 1): Author: realex@flash.net (Bob Alexander); Date: Thu, 30 Aug 2001 20:28:54 -0500; John, You did not mention it but Im guessing your SWr was around 2:1. I think you will find that a center fed half wave vertical will have a feedpoint Z on the order of 100 Ohms when the feedpoint is; /archives//html/Towertalk/2001-08/msg00712.html (8,810 bytes)
3. [TowerTalk] halfwave verticals -Elevated (score: 1): Author: richard@karlquist.com (Richard Karlquist); Date: Thu, 30 Aug 2001 21:26:41 -0700; anyone I don't know what program you used, but I ran a bunch of simulations on NEC3-GS. The results are fairly discouraging. With 10 WL long radials, you need thousands to be effective. And even then; /archives//html/Towertalk/2001-08/msg00713.html (8,785 bytes)
4. [TowerTalk] halfwave verticals -Elevated (score: 1): Author: i4jmy@iol.it (i4jmy@iol.it); Date: Fri, 31 Aug 2001 12:24:58 +0200; matter where the fed is, has a maximum current density way off the base. The maximum radials density should be in that area where the current is maximum and not close to the base like with a classic; /archives//html/Towertalk/2001-08/msg00720.html (10,508 bytes)
5. [TowerTalk] halfwave verticals -Elevated (score: 1): Author: 2@vc.net (2); Date: Fri, 31 Aug 2001 06:33:14 -0700; // Since the end-feed Z of a half-wave vertical is typically c. 1000-ohms, even one 1/4 wave counterpoise makes a sufficient ground. OTOH, with 1/4 wave verticals, which have a thirty-something ohm; /archives//html/Towertalk/2001-08/msg00726.html (8,365 bytes)
6. [TowerTalk] halfwave verticals -Elevated (score: 1): Author: richard@karlquist.com (Richard Karlquist); Date: Fri, 31 Aug 2001 07:49:39 -0700; shows anyone We're confusing two different issues. One is the ground radials as counterpoise, the other is ground radials to enhance low angle radiation. A half wave vertical requires virtually no ra; /archives//html/Towertalk/2001-08/msg00732.html (9,358 bytes)
7. [TowerTalk] halfwave verticals -Elevated (score: 1): Author: 2@vc.net (2); Date: Fri, 31 Aug 2001 08:04:18 -0700; // Is lower angle radiation better below 20m? - R. L. Measures, 805.386.3734,AG6K, www.vcnet.com/measures. end List Sponsored by AN Wireless: AN Wireless handles Rohn tower systems, Trylon Titan tow; /archives//html/Towertalk/2001-08/msg00735.html (9,180 bytes)
8. [TowerTalk] halfwave verticals -Elevated (score: 1): Author: K7GCO@aol.com (K7GCO@aol.com); Date: Fri, 31 Aug 2001 18:04:39 EDT; shows anyone any experience with this? I don't know what program you used, but I ran a bunch of simulations on NEC3-GS. The results are fairly discouraging. With 10 WL long radials, you need thousand; /archives//html/Towertalk/2001-08/msg00747.html (14,615 bytes)

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