Riga Radio (UDH/YLQ):

 

a recording from 1987 (rb)

 

a PPC from the collection of Frank Schüttig (1993)

 

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Callsigns:
UDH - shortwave frequencies in soviet times
UKB - mediumwave frequencies in soviet times
YLQ - new callsign in latvian times

 

Frequencies Voice:
1855
2182
2460
2605
4149
4357
6522
8294
8725
8752
12356
12365
13086
13089
13161
13179
17311
17329
22786
22849

 

Frequencies Morse Telegraphy:
442
500
524
3185
3202.5
4236
4335
6341.5
6368.5
6386.5
6405
6496
8506
8615
12665
12671.5
12688.5
12840
12889.5
12895
13070
16904
16955
16997
17181
22420
22445
22455
22520
22586.5

 

Frequencies Radioteletype:
2174.5
2460
2535
4177.5
4211.5
4216.5
4218.5
4219.5
4223.2
4335
6268
6316
6325
6336
6341.5
6347.5
8376.5
8421
8429.5
8434.5
8446
12520
12579.5
12590.5
12600
12621.5
12643.5
12651.5
12671.5
12688.5
16695
16807
16816
16824.5
16854
16864.5
16904
16955
17181
19738.5
22376.5
22385.5
22387.5
22395

 

Systems used:
50 Bd
DSC
SITOR