CREATE TABLE table_64208 ("Frequency" TEXT, "Station" TEXT, "Operator" TEXT, "Country of origin" TEXT, "Transmitter location" TEXT, "Format" TEXT)

Where is the transmitter located for the station voice of vietnam
SELECT "Transmitter location" FROM table_64208 WHERE "Station" = 'voice of vietnam'
SELECT "Transmitter location" FROM "table_64208" WHERE "Station" = 'voice of vietnam'