NDB Ottringham *OTR :
no recordings available a prepared QSL from the files of Rudy van Dalen (1987) ------------------------------------------------------------ Callsigns: OTR Frequencies Morse Telegraphy: 335 398.5 .
no recordings available
a prepared QSL from the files of Rudy van Dalen (1987)
------------------------------------------------------------
Callsigns: OTR
Frequencies Morse Telegraphy: 335 398.5
.