this recording of a telegraph marker was made by Andy Stumpf
(1987)
nice QSL letter from the telecommunications agency of Poland
(Ary Boender, 1993)
this QSL letter from 2001 confirms not only the report, but also
the end of shortwave transmissions (Vladimir Rozhkov, 2001)
------------------------------------------------------------
Callsigns:
SPW **
Frequencies Voice:
4932
5041
7404
7562
7694
7865
7894
7975
8728
8728.2
8734
9164
11425
11624
13101
13161
13458
13604
13793
14551.5
14656
14874
14914
16136
17260
18720
18995
20288
22738
22789
Frequencies Morse Telegraphy:
7403
8001
8650
10694
11535
13602
13616
14362
Frequencies Radioteletype:
4390.5
4630.5
4633.5
4930.5
5038.5
7560.5
7692.5
7724
7863.5
7892.5
7973.5
7975
8648.5
9162.5
10763.8
11423.5
11494
11621.5
12148
12654.5
13324
13490.5
13496.5
13541.5
13602.5
13791.5
14362
14424
14550
14594.5
14597
14597.2
14654.5
14872.5
14912.5
16128
16454.5
18461.7
18648.5
18651.5
18993.5
19051.5
20286.5
20933.5
22378
23405
23408
26677.5
Systems used:
100 Bd
50 Bd
SITOR