Tallinn Radio (ESA/UAH) :

 

a telegraph recording from 1987, with the wellknown callsign 'UAH' (rb)
loud and clear - a a call in estonian language (by you-know-who-you-are, 2015)
here a nice recording of the 8MHz calling channel by Nils Schiffhauer (2015)

 

see here a handwritten 'telegram' and the PPC from the files of Joop Balneger (1989)
this nice QSL card was received by Dieter Pohlmann in 2001
very colourful and informative verification, sent to Fritz Lehmkühler in 2013
Mauro Giroletti received an interesting eMail, besides the colorful card (2016)

 

here is their website

 

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Callsigns:
ESA (estonian times)
U (NAVTEX)
UAH (soviet times)

 

Frequencies Voice:
1650
2182
2610
3310
4420
8761
13101
17359
22786

 

Frequencies Morse Telegraphy:
445.5
450
500
2359
4220
4285
6281
6405
6485
8476
8570
8650
8710.5
12723
12755
17077
17107
19715.5

 

Frequencies Radioteletype:
518
2795
4210.5
4212
6318
8420
8422
8423.5
12593
12594.5
12600.5
12723
16826
16829.5

 

Systems used:
50 Bd
SITOR