no recordings available
look at the PPC from the collection of Lars Lundström (1979)
a QSL-card from 1987, showing
on the front page the details of the time signal transmissions
(rb)
------------------------------------------------------------
Callsigns:
Inca
OBC
OBC3
Frequencies Voice:
6513
10525
18990
Frequencies Morse Telegraphy:
8650
12307
17590
Frequencies Radioteletype:
10525
11252
11272
16093
17521.7
18337
19056
21858
23151.5
Systems used:
50 Bd
75 Bd