USAF Albrook :
no recording available...
friendly QSL from for Lars Lundström (1980)
this letter from the collection of Maarten van Delft explains clearly the 'Mission Radio Net' of the 'US Military Aids and Advisory Group' (1986)
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Callsigns:
AHF
AHF4
Fox 4
Frequencies Voice:
3137
3144
4724
4725
5710
5711
6683
6730
6738
6739
6753
7775
8967
8968
8992
8993
9019
9020
10935
11126
11175
11176
11179
11217
11244
11260
13200
13201
13214
13242
13244
13245
13247
13248
13722
13950
14408
15015
15016
15065
15675
18018
18019
18021
19500
20600
20885
23325
Frequencies Morse Telegraphy:
13955
Frequencies Radioteletype:
14646.5
19502.3
Systems used:
Packet 300 Bd