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Bob, here is the I-10K model over Real Earth.

All I did to the Free Space model, posted above, is to add a grounded mast with a 4" space to simulate isolation (ISO) and add back the loss characteristics for the model. It is also set over Average Soil at (0.005, 13).

I also set the pattern to show both horizontal and vertical polarization because IMO this antenna produces some horizontal RF at low angles. IMO this is probably due to the strong RF produced by two of the radials that are in parallel with this very large trombone tuning device, as noted in the antenna view with the currents displayed as a red line along the wires.

[QUOTE="Marconi, post: 615025, member: 903"] Bob, here is the I-10K model over Real Earth. All I did to the Free Space model, posted above, is to add a grounded mast with a 4" space to simulate isolation (ISO) and add back the loss characteristics for the model. It is also set over Average Soil at (0.005, 13). I also set the pattern to show both horizontal and vertical polarization because IMO this antenna produces some horizontal RF at low angles. IMO this is probably due to the strong RF produced by two of the radials that are in parallel with this very large trombone tuning device, as noted in the antenna view with the currents displayed as a red line along the wires. [/QUOTE]

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