Table: radio_stations_42
Columns: call_sign
frequency_mhz
city_of_license
erp_w
fcc_info

Question: What is the frequency MHz in tremonton, utah with a ERP W larger than 30?
SQL: SELECT "frequency_mhz" FROM radio_stations_42 WHERE "erp_w" > 30 AND "city_of_license" = 'tremonton, utah'

Question: What is k275av call sign's highest erp w?
SQL: SELECT MAX("erp_w") FROM radio_stations_42 WHERE "call_sign" = 'k275av'