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That is sure something to consider, because you'll note that my model for the Imax w/GPK shows a marked advantage in max gain 4.36 @ 31* over the GM's 2.15 @ 34* and the Imax w/o GPK 3.48 @ 31*.

Here are the same antennas at 40' with no mast, and we see the GM a bit ahead at low angles, but the Imax w/GPK really ahead at the higher angles. This is what makes all this stuff of comparing antennas so difficult. I never know if the antennas are responding to higher reflected signals or to line of sight type signals at low angles.

What does this suggest about the Imax with GPK? It doesn't look good to me, whether mounted high or low, unless high angle reflections dominate. But, I don't know anybody with an Imax w/GPK, so I'm not sure what the word on the street says.

[ATTACH]5506[/ATTACH]

BTW, I guess you mentioned 6' foot radials for the Imax because your Buddie used a regular GPK. My model does show 6' feet in the Wires View, but the radials are really 8.5'. This is due to the wires hanging out in space and being slanted down. Any element out of the X,Y,Z coordinates makes the perspective skewed, but the software adjust this skewed length back to the proper length. That really cornfused me in the beginning.

<blockquote data-quote="Marconi" data-source="post: 310654" data-attributes="member: 903">That is sure something to consider, because you&#039;ll note that my model for the Imax w/GPK shows a marked advantage in max gain 4.36 @ 31* over the GM&#039;s 2.15 @ 34* and the Imax w/o GPK 3.48 @ 31*.&nbsp;Here are the same antennas at 40&#039; with no mast, and we see the GM a bit ahead at low angles, but the Imax w/GPK really ahead at the higher angles. This is what makes all this stuff of comparing antennas so difficult. I never know if the antennas are responding to higher reflected signals or to line of sight type signals at low angles.&nbsp;What does this suggest about the Imax with GPK? It doesn&#039;t look good to me, whether mounted high or low, unless high angle reflections dominate. But, I don&#039;t know anybody with an Imax w/GPK, so I&#039;m not sure what the word on the street says.&nbsp;[ATTACH]5506[/ATTACH]&nbsp;BTW, I guess you mentioned 6&#039; foot radials for the Imax because your Buddie used a regular GPK. My model does show 6&#039; feet in the Wires View, but the radials are really 8.5&#039;. This is due to the wires hanging out in space and being slanted down. Any element out of the X,Y,Z coordinates makes the perspective skewed, but the software adjust this skewed length back to the proper length. That really cornfused me in the beginning.</blockquote>

[QUOTE="Marconi, post: 310654, member: 903"] That is sure something to consider, because you'll note that my model for the Imax w/GPK shows a marked advantage in max gain 4.36 @ 31* over the GM's 2.15 @ 34* and the Imax w/o GPK 3.48 @ 31*. Here are the same antennas at 40' with no mast, and we see the GM a bit ahead at low angles, but the Imax w/GPK really ahead at the higher angles. This is what makes all this stuff of comparing antennas so difficult. I never know if the antennas are responding to higher reflected signals or to line of sight type signals at low angles. What does this suggest about the Imax with GPK? It doesn't look good to me, whether mounted high or low, unless high angle reflections dominate. But, I don't know anybody with an Imax w/GPK, so I'm not sure what the word on the street says. [ATTACH]5506.vB[/ATTACH] BTW, I guess you mentioned 6' foot radials for the Imax because your Buddie used a regular GPK. My model does show 6' feet in the Wires View, but the radials are really 8.5'. This is due to the wires hanging out in space and being slanted down. Any element out of the X,Y,Z coordinates makes the perspective skewed, but the software adjust this skewed length back to the proper length. That really cornfused me in the beginning. [/QUOTE]

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