here is a voice transmission,
recorded by Tony Paredes (2011)
an electronic QSL, received
by Fabricio Andrade Silva in 2012
here a more detailed version,
by 'real' mail (Patrick Robic, 2013)
------------------------------------------------------------
Callsigns:
CBM
Frequencies Voice:
2182
2738
4146
4357
4366
4369
4411
4417
4429
5680
6224
6501
6510
6516
8294
8719
8737
8743
8761
8767
8779
13080
13128
13137
13146
Frequencies Morse Telegraphy:
450
500
4247
4322
8677
8694
Frequencies Radioteletype:
518
Frequencies FAX:
4322
8696
Systems used:
SITOR