- 1. [antennaware] TH7DXX Beam (score: 1)
- Author: gabnjb@earthlink.net (Gary Breed)
- Date: Tue, 20 Nov 2001 22:00:59 -0500
- Dennis and all, I know Hy-Gain had AO modeling files for most of its antennas when it was owned by Telex, but I don't think MFJ has all the data. The first thing to check is whether you are using the
- /archives//html/Antennaware/2001-11/msg00001.html (7,448 bytes)
- 2. [antennaware] question on ground system for good ground (score: 1)
- Author: Gary Breed" <gabnjb@earthlink.net (Gary Breed)
- Date: Wed, 18 Jul 2001 23:45:16 -0400
- Here in the U.S., the simplest way to get an estimate of regional ground conductivity is from the records of a nearby directional (multi-tower) AM (medium wave) radio station. Their operating paramet
- /archives//html/Antennaware/2001-07/msg00001.html (10,159 bytes)
- 3. [antennaware] question on ground system for good ground (score: 1)
- Author: Gary Breed" <gabnjb@earthlink.net (Gary Breed)
- Date: Thu, 19 Jul 2001 22:44:02 -0400
- NEC-2 should work down to a very low height (inches). If you want to model the antenna on or under the surface, you'll need NEC-4! Eric is right about frequency dependence -- my own trial was at 40M.
- /archives//html/Antennaware/2001-07/msg00003.html (9,412 bytes)
- 4. [antennaware] Modeling an EF-240S (score: 1)
- Author: Gary Breed" <gabnjb@earthlink.net (Gary Breed)
- Date: Sat, 21 Jul 2001 22:54:28 -0400
- Pete I would be wary of substituting lumped inductors for linear loading. You want to represent the harmonic resonances and changing the loading type will very likely make a difference (can't say how
- /archives//html/Antennaware/2001-07/msg00007.html (8,995 bytes)
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