a recording of a RTTY test
transmission (rb, 1982) 
just in case you have no decoder at
hand ;-)
friendly verification letter, received by Ary Boender in 1991
------------------------------------------------------------
Callsigns:
BAC **
BAE **
BAG **
BAJ **
BAK **
BAM **
BAP **
BAR **
BAT **
BAW **
BAX **
BAY **
BAZ **
BHI **
BLZ **
BPI **
BPJ **
BPL **
BUA **
BZA **
BZB **
BZC **
BZG **
BZK **
BZL **
BZM **
BZP **
BZQ **
BZR **
BZS **
BZT **
BZU **
BZW **
BZZ **
Frequencies Morse Telegraphy:
13479
Frequencies FAX Picture Transmissions:
5815
7636
7656
9324
12362
Frequencies Radioteletype:
4530
4741
4800
4922
4954
5285
5309
5417
5440
5473
5744
5763
5772
5780
5800
5815
5824
5839
5848
5935
6864
6898
6915
7395
7430
7475
7520
7546
7598
7625
7650
7667
7674
7688
7744
7790
7807
7887
7915
7923
7960
8045
8055
8069
8086
8124
8137
8143
8150
9050
9087
9105
9115
9171
9210
9254
9362
9417
9491
9838
9868
9885
9934
9950
9963
10508
10623
10690
10795
10862
10982
11012
11133
11200
11234
11406
11425
11594
11606
11645
11680
11689
11975
12135
12155
12166
12177
12210
12228.4
12247
12265
12329
13210
13264
13467
13506
13530
13607
13770
13791
14305.9
14336
14362
14367
14376
14406
14428
14434
14496
14548
14676
14697
14760
14795.5
14831
14864
14923
14927
14938
15462
15520
15544
15592
15614
15688
15700
15856
15926
16073
16114
16126
16136
16155
16276
16328
16412
16459
17214
17295
17370
17420
17443
17470
17487
17571
17600
18190
18244
18535
18712
18857
18872
19011
19042
19077
19088
19128
19150
19347
19362
19384
19523
19530
19636
19850
19868
19920
20036
20073
20424
20964
Systems used:
120 rpm
50 Bd
50Bd,60/120rpm
75 Bd