dear dell and ma330
i am agree with j-p Comments.
I saw a big flaw in the circuit Fitzgerald.8038 is a signal generator from 0 to 300 kHz.ok?
Fitzgerald then strengthen it by telescopic antenna plays.Normally 5 kHz frequency antenna for 3750 meters is required

no 50cm.This circuit does not play virtually no power and no signal from the telescopic antenna.
Telescopic antenna is a good way to close a Flag

dear j-p A Question:
How does Fitzgerald by a probe signal transmitted to Earth?
This method can show the schematic?