CREATE TABLE table_35111 ("Callsign" CLOB, "Area served" CLOB, "Frequency" CLOB, "Band" CLOB, "Freq currently" CLOB, "Purpose" CLOB)

Which freq currently has 0 684?
SELECT "Freq currently" FROM table_35111 WHERE "Frequency" = '0 684'
SELECT "Freq currently" FROM "table_35111" WHERE "Frequency" = '0 684'