a recording of a RTTY test with 75 Bd (rb, 1985)
this PPC reception verification is from 1986 (rb)
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Callsigns:
Ava Guarani
ZPK
Frequencies Voice:
12138
18990
Frequencies Morse Telegraphy:
4301
4307
4328
4337
6390
6397
6481
8534
8614
8674
12813
12903
12921
12984
13011
17084
17204
17228
22629
22635
Frequencies Radioteletype:
9082
11107
12276
12282.2
12288.8
12350
17532
17590
17597.3
19555
19561
23692
Systems used:
75 Bd