CREATE TABLE table_73764 ("Branding" TEXT, "Callsign" TEXT, "Channel" TEXT, "Power  ( kW ) " TEXT, "Coverage" TEXT)

Which city did kpnz-tv provide coverage for?
SELECT "Coverage" FROM table_73764 WHERE "Callsign" = 'KPNZ-TV'
SELECT "Coverage" FROM "table_73764" WHERE "Callsign" = 'KPNZ-TV'