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Alright Mister Marconi;

What's the possibility of having you model the Imax2000 in free space but with a 108" single counterpoise dropping straight down below it's mounting plate as if it were floating in space 100' above the space shuttle but with a very effective CMC choke in the coax 9' below the Imax2000 mounting plate?

I'd also like to see this model if the bottom tip of the 9' counterpoise were 45' above a good earth ground.

My thoughts are:
I'll grab a 4' piece of 2" diameter military fiberglass pole and install it in my metal push up mast 8' 6" below the top of the mast where it bolts all the way up into the Imax mounting plate.

Then I'll wrap a very effective coaxial CMC choke (5T x 4" form) around the fiberglass so the 9' of coax shield along with the 8' 6" of 2" diameter metal mast would provide right at a 1/4 wave counterpoise directly below the Imax, but fully RF isolated & insulated from the lower 45' of mast, leaving only a resonant 1/4 wave vertical counterpoise directly below the Imax.

I wonder what that would do to the pattern of that sometimes surprisingly good operating though noisy, fiberglass encased, vertically polarized, omni-directional, 27MHz .625 wire aerial?

<blockquote data-quote="Needle Bender" data-source="post: 367264" data-attributes="member: 13339">Alright Mister Marconi;<img src="https://cdn.jsdelivr.net/joypixels/assets/8.0/png/unicode/64/1f44d.png" class="smilie smilie--emoji" loading="lazy" width="64" height="64" alt=":thumbup1:" title="Thumbs Up&nbsp; &nbsp; :thumbup1:"&nbsp; data-smilie="27"data-shortname=":thumbup1:" />&nbsp;What&#039;s the possibility of having you model the Imax2000 in free space but with a 108&quot; single counterpoise dropping straight down below it&#039;s mounting plate as if it were floating in space 100&#039; above the space shuttle but with a very effective CMC choke in the coax 9&#039; below the Imax2000 mounting plate?I&#039;d also like to see this model if the bottom tip of the 9&#039; counterpoise were 45&#039; above a good earth ground.My thoughts are:&nbsp;I&#039;ll grab a 4&#039; piece of 2&quot; diameter military fiberglass pole and install it in my metal push up mast 8&#039; 6&quot; below the top of the mast where it bolts all the way up into the Imax mounting plate.Then I&#039;ll wrap a very effective coaxial CMC choke (5T x 4&quot; form) around the fiberglass so the 9&#039; of coax shield along with the 8&#039; 6&quot; of 2&quot; diameter metal mast would provide right at a 1/4 wave counterpoise directly below the Imax, but fully RF isolated &amp; insulated from the lower 45&#039; of mast, leaving only a resonant 1/4 wave vertical counterpoise directly below the Imax.I wonder what that would do to the pattern of that sometimes surprisingly good operating though noisy, fiberglass encased, vertically polarized, omni-directional, 27MHz .625 wire aerial? <img src="https://cdn.jsdelivr.net/joypixels/assets/8.0/png/unicode/64/1f644.png" class="smilie smilie--emoji" loading="lazy" width="64" height="64" alt=":rolleyes:" title="Roll Eyes&nbsp; &nbsp; :rolleyes:"&nbsp; data-smilie="11"data-shortname=":rolleyes:" /></blockquote>

[QUOTE="Needle Bender, post: 367264, member: 13339"] Alright Mister Marconi; :thumbup1: What's the possibility of having you model the Imax2000 in free space but with a 108" single counterpoise dropping straight down below it's mounting plate as if it were floating in space 100' above the space shuttle but with a very effective CMC choke in the coax 9' below the Imax2000 mounting plate? I'd also like to see this model if the [B]bottom tip[/B] of the 9' counterpoise were 45' above a good earth ground. My thoughts are: I'll grab a 4' piece of 2" diameter military fiberglass pole and install it in my metal push up mast 8' 6" below the top of the mast where it bolts all the way up into the Imax mounting plate. Then I'll wrap a very effective coaxial CMC choke (5T x 4" form) around the fiberglass so the 9' of coax shield along with the 8' 6" of 2" diameter metal mast would provide right at a 1/4 wave counterpoise directly below the Imax, but fully RF isolated & insulated from the lower 45' of mast, leaving only a resonant 1/4 wave vertical counterpoise directly below the Imax. I wonder what that would do to the pattern of that sometimes surprisingly good operating though noisy, fiberglass encased, vertically polarized, omni-directional, 27MHz .625 wire aerial? :rolleyes: [/QUOTE]

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