What if you used a balloon or kite to elevate a LONG vertical wire, fed
end-fed zepp fashion. The total height would be one wavelength or
preferably more, with the top half wavelength a single wire, and the rest,
balanced open-wire tuned feeder.
With the bottom end of the vertical half-wave higher off the ground, the
ground loss would be reduced (not totally eliminated). The old pre-WW2
zepplin airships used a similar antenna trailing off the end of the craft.
A modified version has been a popular method for feeding a horizontal
halfwave, used by amateurs for decades.
I have seen descriptions of the antennas used at WWV, which are vertically
oriented, halfwave centre-fed dipoles mounted on wooden utility poles. I
have never seen any mention of what kind of ground plane, if any, is used
with those antennas at WWV. Can anyone enlighten me on this?
Don K4KYV
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