The station-number of a soviet utility station consists of the prefix "URS-", that 
is the ITU-country-code, and a following 4-digit number. In such a large country, I 
used this number to designate the geographical area of the station. Using the list 
below, a station number "URS-2371" decodes as being in Latvia (LVA), and "URS-7244" 
is a station located in Uzbekistan (UZB).  

 URS-...     ( 1000 ... 1999 )  stations of no specified location; statewide working channels
 URS-EST     ( 2000 ... 2199 )  Estonia                                
 URS-LVA     ( 2200 ... 2399 )  Latvia                                
 URS-LTU     ( 2400 ... 2599 )  Lithuania                                
 URS-KAL     ( 2600 ... 2799 )  Kaliningrad                                
 URS-BLR     ( 2800 ... 2999 )  Belarus                                
 URS-UKR     ( 3000 ... 3799 )  Ukraine                                
 URS-MDA     ( 3800 ... 3999 )  Moldova                                
 URS-RUS(EU) ( 4000 ... 5999 )  Russia (Europe, west of Ural mountains, ~060°E)                                
 URS-GEO     ( 6000 ... 6299 )  Georgia                                
 URS-ARM     ( 6300 ... 6599 )  Armenia                                
 URS-NAK     ( 6600 ... 6699 )  Nakhichevan (Azerbaijanian exclave between Armenia and Iran)                               
 URS-AZE     ( 6700 ... 6999 )  Azerbaijan                                
 URS-KAZ     ( 7000 ... 7199 )  Kazakhstan                                
 URS-UZB     ( 7200 ... 7399 )  Uzbekistan                                
 URS-TKM     ( 7400 ... 7599 )  Turkmenistan                                
 URS-TJK     ( 7600 ... 7799 )  Tajikistan                                
 URS-KGZ     ( 7800 ... 7999 )  Kirgistan                                
 URS-RUS(AS) ( 8000 ... 9999 )  Russia (Asia, east of Ural mountains, ~060°E)