CREATE TABLE table_34050 ("Callsign" TEXT, "Area served" TEXT, "Frequency" TEXT, "Band" TEXT, "On-air ID" TEXT, "Purpose" TEXT)

What is the Frequency of Gosford when the Callsign of 2cfm?
SELECT "Frequency" FROM table_34050 WHERE "Area served" = 'gosford' AND "Callsign" = '2cfm'
SELECT "Frequency" FROM "table_34050" WHERE "Area served" = 'gosford' AND "Callsign" = '2cfm'