CREATE TABLE table_13530 ("Frequency" TEXT, "Call sign" TEXT, "Branding" TEXT, "Format" TEXT, "Owner" TEXT, "Language/Rebroadcast" TEXT)

what is the frequency when the format is contemporary christian music?
SELECT "Frequency" FROM table_13530 WHERE "Format" = 'contemporary christian music'
SELECT "Frequency" FROM "table_13530" WHERE "Format" = 'contemporary christian music'