USCG GANTSEC San Juan :

 

a CQ call as received on shortwave in 1973 (rb)
here a short excerpt from a voice transmission, picked up on the 2 MHz channel (rb, 1984)
again, NMR crossing the atlantic on 2 MHz (Rudy van Dalen, 1990)

 

friendy letter verifying the reception (rb, 1973)
QSL letter from the collection of Frank Schüttig (1974)
here is a very detailed letter, received by Rudy van Dalen in 1982

 

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Callsigns:
NMR
NMR1

 

Frequencies Voice:
2182
2670
2706
3022
3122
3253
4050
4785
5422
5692
5696
6501
7507
7529
8084
8764
8983
8984
9126
10137
11201
11202
11435
11515
12150
12429.2
18722

 

Frequencies Morse Telegraphy:
8470
12700
17002.4

 

Frequencies Radioteletype:
518

 

Systems used:
SITOR