Table: tv_station_data_2
Columns: translator_call_letters
b_mountain_channel
laurel_mountain_channel
psip
station_call_letters
network_affiliation_id
original_channel
signal_quality

Question: What signal quality does the KCAL-DT channel have?
SQL: SELECT "signal_quality" FROM tv_station_data_2 WHERE "station_call_letters" = 'kcal-dt'

Question: What original channel is associated with B Mountain Channel 9?
SQL: SELECT "original_channel" FROM tv_station_data_2 WHERE "b_mountain_channel" = '9'

Question: What B Mountain Channel has station call letters of k41go?
SQL: SELECT "b_mountain_channel" FROM tv_station_data_2 WHERE "station_call_letters" = 'k41go'

Question: What Laurel Mountain Channel is associated with B Mountain Channel of 7?
SQL: SELECT "laurel_mountain_channel" FROM tv_station_data_2 WHERE "b_mountain_channel" = '7'

Question: What are the translator call letters for station call letters of KCOP-DT?
SQL: SELECT "translator_call_letters" FROM tv_station_data_2 WHERE "station_call_letters" = 'kcop-dt'