i need to get used to interpreting these antenna models, but it looks to me like the 89" vertical example reduced some high angle radiation, but also raised the angle of the maximum signal a slight bit.
did i get that right?
also, how did you arrive at 89"?
here is the part of the patent sheet that has always intrigued me with regard to take-off angle:
"It has been found, however, that the flare affects not only the impedance, but also influences the takeoff angle at maximum signal strength."
to me, this says that playing with the flare at the bottom will raise or lower the take off angle.
another quote:
" When the flare was omitted and the conductors 16 and 18 were tested parallel to the first conductor 14 it was found that the takeoff angle at maximum signal strength was as much as to below the horizontal."
so that would mean that reducing the flare (smaller diameter hoop) can aim the take off angle lower on the horizon.
have you ever played with that aspect in your models?
I realize it would also change the impedance, but have no idea to what degree and therefore what the optimum hoop diameter might be for an astroplane purposed for long distance DX contacts.
thanks for the charts, i will look more at them so that i will understand your responses better.
LC
