CREATE TABLE table_name_96 (signal_quality VARCHAR, station_call_letters VARCHAR)
SELECT signal_quality FROM table_name_96 WHERE station_call_letters = "kcal-dt"
ช่อง KCAL-DT มีคุณภาพสัญญาณอะไรบ้าง?
What signal quality does the KCAL-DT channel have?