CREATE TABLE table_21748 ("Branding" CLOB, "Callsign" CLOB, "Frequency" CLOB, "Power  ( kW ) " CLOB, "Location" CLOB)

How many locations have the call signs dxjp-fm?
SELECT COUNT("Location") FROM table_21748 WHERE "Callsign" = 'DXJP-FM'
SELECT COUNT("Location") FROM "table_21748" WHERE "Callsign" = 'DXJP-FM'