i don't notice anything different going on with how my i-10k responds to horizontal signals from locals using yagi's Eddie,
i don't doubt that the trombone has some radiation, you are not the first person to claim the 10k will have some horizontal radiation,
i remember your model looked to have more horizontal radiation than i can imagine coming from the trombone or the asymmetric radial setup but i would not argue over it,
id say this about the i-10k,
they are sturdy in our weather, put it up on a pole no weaker than scaffold pole and forget about it, we don't get ice like 1-800 toll free,
they don't go open circuit and blow your amplifier, don't snap in wind up to 100mph, won't burn out well below rated power handling,
in my yard it has the edge over other 5/8 its been up against including the gain-master,
that may not be the case if the antennas were well above ground in my dads field like the good old days but that's how it pans out here in the yard,
your sigma model looks the best in that group but the vector does better when its adjusted for best signals,
i can't give you dimensions, i don't think you want the same dimensions at every location/ mast height,
the only way i know is adjusting for maximum signal on the mast/feed-line you will be using,
i still think its likely we are altering takeoff angle, i don't think we are increasing gain much if at all,
nor do i believe gain is as important as which antenna puts the bigger signal at low angles,
thanks for the models.
