CREATE TABLE table_66627 ("City of license" TEXT, "Identifier" TEXT, "Frequency" TEXT, "Power" TEXT, "Class" TEXT, "RECNet" TEXT)

What Frequency has the Identifier of CBFX-FM-6?
SELECT "Frequency" FROM table_66627 WHERE "Identifier" = 'cbfx-fm-6'
SELECT "Frequency" FROM "table_66627" WHERE "Identifier" = 'cbfx-fm-6'