Topband: Deep earth rod vs radials - FS measurement beyond the nearfield zone

[K9AY]

> Any comments/ ideas as to what other 'sense' antenna could be used for the
> low angle radiation field strength measurement at the far field zone which
> would only 'see' desired range of radiation angles?
>
> 73 de VK2CCC
> Tomas


Antennas are reciprocal, so an external signal source might provide the 
solution. A small battery-powered signal source could easily be raised by a 
baloon. Its antenna could be a short vertical that is part of the tether. 
The only drawback is waiting for calm weather whenever you want to do 
accurate measurements.

Flying measurements are not new. Many years a ago, the radiation profile of 
the sectionalized (collinear) antenna of station WHO in Des Moines, IA was 
measured using a helicopter.

73, Gary
K9AY