Hello Roelof

You said:

One of the tests I did was on the second floor of a large concrete

community

building.
I have performed some height test as well and found the following figures:

height               rel. dB
=================
1.2 m / 4 ft            0 dB
2.4 m / 8 ft         + 4 dB
3.6 m / 12 ft       + 6 dB
4.8 m / 16 ft       + 8 dB

Shielding by bushes in my garden has also been noted. I had to raise it
above these to restore a good s/n ratio. On the other hand, at an open

field

near a lake it worked first class 2 metre high and raising it improved
signal strength but not the signal to noise ratio.

These results are in line with tests done by G3GRO a couple of years ago
with a short electrostatic whip antenna.

I have the amplifier and coax voltage supply board for a electrostatic
antenna used at the Decca transmitter sites. The original antenna  was a
copper cylinder fixed only a metre or so above ground. I am not sure what
they were used for - I guess Walter would know.

Peter, G3LDO