4666
The Voice of Russia DX Club , via BBC monitoring reports that Radio Canada International , and YLE Radio Finland , are conducting test re - broadcasts in St . Petersburg Russia , on 684 KHz medium wave .
 St . Petersburg Russia, Russia, The Voice of Russia DX Club, BBC monitoring, Radio Canada International, YLE Radio Finland
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: geographical social political, organization, person, location, facility, vehicle, weapon 
Text: {0} 
Answer:
 St . Petersburg Russia, Russia, The Voice of Russia DX Club, BBC monitoring, Radio Canada International, YLE Radio Finland