this regional station used a radioteletype
link for flight data exchange with Aden -(rb)-(mc-911-1-5).jpg){kind=small}
just in case you have no decoder
at hand ;-)
no pictures of QSLs or other info available
for more details from after 1990, look here
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Callsigns:
7OR
ODAR
Frequencies Voice:
7595
11300
Frequencies Radioteletype:
8855
11222
Systems used:
50 Bd