In article ,
Sal salmonella@food poisoning.org wrote:

"gareth" wrote in message
...

In another post, those of us from THIS side of the pond were
shown the Texas Bugcatcher antenna (easily googled), and its
extensive website.

And my question is this, why is it called
a capacity hat, because calculation of the capacity between the hat
and the ground will only give, at a guess, a miniscule fraction of a puff.


Others have provided essential theory.

In practice: http://en.wikipedia.org/wiki/KFI
See paragraph entitled "Third Tower" and read
second sentence.

Another interesting "in practice" writeup can be found in the first 50
pages of Ed Laport's excellent "Radio Antenna Engineering", where he
discusses the use of top-loading of low-frequency broadcast antennas.

http://snulbug.mtview.ca.us/books/Ra...naEngineering/