MFA Budapest :

 

in 1986 they were 'easy' to receive, as they used standard-baudot rtty (rb)
later they switched to a self-developed system (HNG-FEC), leaving decoding possibilities to a few only
just in case you have no decoder at hand ;-)

 

Lars Lundström received this PPC in 1984
a QSL sent by telegram, and with lots of details! (Rudy van Dalen, 1987)
when you walk along the streets, this arrangement looks quite impressive (rb, 1993)

 

------------------------------------------------------------

 

Callsigns:
HGX21

 

Frequencies Voice:
10324

 

Frequencies Morse Telegraphy:
5457
5870
6754
6770
10318
10405

 

Frequencies Radioteletype:
2450
3700
3860
4500
4744
4744.4
4745.2
4745.6
5172.8
5450
5470
5477.5
5477.8
5576.4
5576.8
5577.2
5577.6
5578
5584.4
5584.8
5585.6
5640.4
5725
5790
6476.4
6476.8
6477.2
6477.6
6712
6761
6765
6770
6770.4
6770.8
6780.2
6780.4
6780.8
6781
6781.1
6782
6793
6800
6880
7937
8160
8170
8174
8401.7
8853.7
9044
9048
9051
9051.4
9055
9256.4
9257
9257.2
9257.6
9258
9342
10318
10323.5
10396
10400.8
10401.2
10401.3
10401.6
10402
10416
10896
11462
12245
12260
12260.4
12262.5
12263.2
12264
12267
12605
13371
13373
13375
13379
13379.5
13385
13396
13456
13539.5
13875.4
13876.2
14377
14490
14809
14813
14813.2
14813.4
14813.7
14820
14829
14840
14840.4
14841.6
14852
14874
15487
15675.4
15676.6
15720
15724
15988
16060.5
16204
16398
16400
16430
16442
16450
16452.4
16452.8
16453.2
16453.4
16453.8
16454
16454.2
16454.6
16455
17503
18041
18045
18060
18170
18262.8
18392
18398
18399.3
18399.5
18400.4
18412
18420
18585
18810.4
19180.8
19230
19514
19801.2
19809.4
19811.2
20011
20015
20035.3
20035.4
20045
20071.2
20115
20255
20398
20779
20802
20998
21755.2
21784
22926
23254
23260.4
23263.5
23326
23360.4
23363
23370
23385
23904

 

Systems used:
50 Bd
75 Bd
DUP-ARQ-125
HNG-FEC