Marconi's Poldhu antenna used in 1901

Im simulated the antenna used by Guglielmo Marconi in 1901 for the first transatlantic radio contact on the transmittersite in Poldhu / Cornwall England.

The used frequency was somwhere around 850 kHz.

I assume that Marconi and his helpers used a network of radials as a counterweight for the 
antenna. In the simulation i made each radial-cable 100m long.


3D - model of radiation pattern
I used the program "MMANA-GAL" for this simulation.