CREATE TABLE table_79814 ("Dish" TEXT, "Callsign" TEXT, "Network" TEXT, "Resolution" TEXT, "City of License" TEXT, "Official Website" TEXT)

Name the official website which has dish of and callsign of kvtv
SELECT "Official Website" FROM table_79814 WHERE "Dish" = '•' AND "Callsign" = 'kvtv'
SELECT "Official Website" FROM "table_79814" WHERE "Callsign" = 'kvtv' AND "Dish" = '•'