listen to DHO78 working an aircraft
on 5 MHz (rb, 2014)
this nice QSL is from the collection of Patrick Robic (2005)
Main site, which includes
German Air Warning Center
TX-Site Uedem
------------------------------------------------------------
Callsigns:
DHO78
UY9C
Frequencies Voice:
3107
3143
4483
4835
5335
5687
5717
6715
6832
8965
Frequencies Morse Telegraphy:
4825