NDB Moskva-Vnukovo (*OE/SX):

in about 2009, the callsigns changed from T/W to OE/SX, so that in soviet times only the pair T/W was used

 

here is SX-914, received on a Moscow web receiver (rb, 2012)
listen to OE-949, received while in Poland (rb, 2017)

 

no pictures of QSLs or other info available

 

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Callsigns:
OE
SX
T
W

 

Frequencies Morse Telegraphy:
914
949