listen again to the shortwave time signals from JJY, though weak...
(Willi Passmann)
the VLF-signal from the Michael
Oexner NDB Handbook, though it's a time signal instead of a NDB
nice QSL card (Frank Schüttig, 1979)
this card was received in 2012 by Mauro Giroletti for the VLF
signal
------------------------------------------------------------
Callsigns:
JG2AS
JJD
JJY
Frequencies Voice:
2500
5000
8000
10000
15000
Frequencies Morse Telegraphy:
40
8000
10415
15950