Hi John,
Am 15.12.2010 11:55, schrieb John Rabson:
I am writing a piece on VLF for the Cave Radio &
Electronics Group Journal and would like to include distance records.
Can people please confirm that the following information is correct
(or not)?
Above-ground
antennas
|
Hz
|
ERP mW
|
From
|
To
|
km
|
|
8970
|
58
|
Heidelberg
|
Israel
|
2873
|
|
6470
|
9
|
Heidelberg
|
Breclav
|
904
|
|
5170
|
5
|
Heidelberg
|
Breclav
|
904
|
|
|
|
|
|
|
The QTH of SQ5BPF is Washaw. The rest is correct.
Earth current antennas
|
Hz
|
TX power W
|
Electrode spacing m
|
From
|
To
|
km
|
|
8970
|
250
|
600
|
Heidelberg
|
Roschbach
|
72
|
|
6470
|
250
|
600
|
Heidelberg
|
Roschbach
|
72
|
|
5170
|
250
|
600
|
Heidelberg
|
Roschbach
|
72
|
|
|
|
|
|
|
|
I did successful tests to Roschbach just on 8970 Hz, not on 6470 and
5170. The distance is 49.6 km (since my earth antenna QTH is different
to the kite antenna QTH).
Thanks too.
73, Stefan/DK7FC
|
|
