see also the entry of NBA in the Panama Canal Zone for the time after October 1, 1979
no recording available...
a very detailed verification letter, telling the history of utility
radio of the Panama Canal (rb, 1984)
------------------------------------------------------------
Callsigns:
NBA
Radio Balboa
Frequencies Voice:
4005
4010
4015
4040
4045
4184
4515
4525
4625
4975
5006
5052
5072
5080
5295
5340
5448
5785
5915
6697
6835
6970
7305
7385
7595
7635
7645
7690
7780
7895
7962
7985
8010
8020
8080
8090
8614
9085
9090
9190
9250
9285
9380
9440
10135
10806
11060
11080
11207
11430
11563
11672
12015
12030
12098
12120
12128
12138
12225
12831
13572
15525
15990
16020
16160
16300
16355
17370
17510
17530
17540
17590
17690
17698
18068
18125
18162
18990
19615
19785
19888
20025
20375
20550
20625
20675
22895
23245
23290
23650
24030
24090
24450
24685
24780
24810
24930
25360
26775
26850
Frequencies Morse Telegraphy:
24
5448
11080
11350
17697
17698
Frequencies Radioteletype:
4982
7962.8
9085
11000
11570
12138
12205
13371.5
14452.3
14471
16094
16194
16264.7
17540
17590
18067
18550
19616.5
20350
20675
20682
20741
20850
20894.7
21771
21792
21833
22771
22810
25516
Systems used:
50 Bd
75 Bd