listen again to OMP here
in the recording of Andy Stumpf (1987)
from the files of Dieter
Pohlmann: see this prepared card from 1990
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Callsigns:
OLP* (used in czech republic, 1993 and later)
OMP* (used in czechoslovakian times, until the
end of 1992)
Frequencies Morse Telegraphy:
4241
4292.5
4329
4344.5
6440
8482
8544
8627.5
12818
13007
16977
17024
22460
22486
25143
Frequencies Radioteletype:
8544
13007
16977
22486
Systems used:
PACTOR
SITOR