in this recording of *SW-309.5 you
hear several times the callsign, and a long dash for direction
finding (rb, 2013)
see here the very detailed transmission scheme from the german
nautical officer's handbook of 1951
.jpg){kind=small}
these pictures came from
a russian collection on lighthouse pictures, showing lighthouse
with antenna (left) and the transmitter (right)
a PPC from the files of Patrick
Robic (2000)
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Callsigns:
I I
SW
Frequencies Morse Telegraphy:
309.5
318.5