Horizontal Dipole - zero degrees elevation
Frank wrote:
At 10,000 meters, 3 meters off the ground: E(theta) is maximum off the ends at 3.5E-8 V/m E(phi) is maximum off the sides at 2.6E-7 V/m This agrees with the expected horizontal polarization off the sides, and vertical polarization off the ends. Frank, VE6CB Now what's the result without the surface wave? Roy Lewallen, W7EL Good point: E(theta) off the ends 1.25E-7 V/m E(phi) off the sides 1.04E-7 V/m Frank Ok, how do I get those, and select those, results? I looked for it, but couldn't find it in EZNEC. tom K0TAR |
Horizontal Dipole - zero degrees elevation
"tom" wrote in message . net... Frank wrote: At 10,000 meters, 3 meters off the ground: E(theta) is maximum off the ends at 3.5E-8 V/m E(phi) is maximum off the sides at 2.6E-7 V/m This agrees with the expected horizontal polarization off the sides, and vertical polarization off the ends. Frank, VE6CB Now what's the result without the surface wave? Roy Lewallen, W7EL Good point: E(theta) off the ends 1.25E-7 V/m E(phi) off the sides 1.04E-7 V/m Frank Ok, how do I get those, and select those, results? I looked for it, but couldn't find it in EZNEC. tom K0TAR It comes from the "RP" card; line 8 below. I do not know how to implement this line of code in EZNEC. I am sure there are plenty of people In this group that know how to do it. Frank VE6CB CM Horizontal Dipole CE GW 1 11 0 0 3 0 1.5 3 0.01 GE 1 -1 0 GN 2 0 0 0 13.0000 0.0050 FR 0 1 0 0 100 1 EX 0 1 6 0 1 0 RP 1 1 360 0000 3 0 1.00000 1.00000 10000 EN |
Horizontal Dipole - zero degrees elevation
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Horizontal Dipole - zero degrees elevation
On Sat, 20 Jun 2009 23:19:34 -0700, Richard Clark
wrote: On Sat, 20 Jun 2009 20:50:59 -0400, wrote: So,EZNEC models "very far away" and, in my example, the channel 23 tower is 5.1 miles away (about 10,000 wavelengths) so I need a different model? A different program? I think you are correct in saying that is my main confusion. Hi Pat, You can use the "near field" table to then build a second antenna (representing your own at the proper distance) with a load, and then look at the power developed to that load to see how things perform. This goes beyond the normal use, but for those who will slog through it, there's a way. snip 73's Richard Clark, KB7QHC Thanks again, Richard. I just purchased an EZNEC license so I will try that to further my learning. (I had been using the demo version). 73, Pat |
Horizontal Dipole - zero degrees elevation
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