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1. [antennaware] question on ground system for good ground (score: 1): Author: k2av@contesting.com (Guy Olinger, K2AV); Date: Wed, 18 Jul 2001 23:00:23 -0400; Following forwarded. Original bounced due to invalid format. Send any direct replies to hremijn@zeelandnet.nl - - . . . . . . - - . . . . - - . . - . . 73, Guy k2av@contesting.com Apex, NC, USA == Fr; /archives//html/Antennaware/2001-07/msg00000.html (8,139 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: eric@k3na.org (Eric Scace K3NA); Date: Thu, 19 Jul 2001 20:35:31 -0400; The choice of elevations to make measurements is frequency dependent. Pick a "low" and "high" height that are appropriate to the frequency band being considered. I'm not personally familiar with the; /archives//html/Antennaware/2001-07/msg00002.html (11,297 bytes)
4. [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)
5. [antennaware] question on ground system for good ground (score: 1): Author: i4jmy@iol.it (i4jmy@iol.it); Date: Fri, 20 Jul 2001 13:20:26 +0200; Just a series of thoughts ... In case of horizontally polarized antennas placed at a reasonable height, the ground costants have a neglegible impact on the radiation pattern and efficiency, while the; /archives//html/Antennaware/2001-07/msg00004.html (11,742 bytes)
6. [antennaware] question on ground system for good ground (score: 1): Author: eric@k3na.org (Eric Scace K3NA); Date: Fri, 20 Jul 2001 12:25:11 -0400; Hello Mauri -- Your message brings up two points: 1. Using antennas at various heights to measure ground conditions at the installation site will help to more accurately model the impedances of anten; /archives//html/Antennaware/2001-07/msg00005.html (13,379 bytes)
7. [antennaware] question on ground system for good ground (score: 1): Author: n4zr@contesting.com (Pete Smith); Date: Sun, 22 Jul 2001 01:51:32 -0400; Are these FCC graphs web-available somewhere? I would be intrigued to know what the local geology (karst - limestone holy and cracked like swiss cheese, under soil of varying depth) produces in the w; /archives//html/Antennaware/2001-07/msg00008.html (8,510 bytes)

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