Table: radio_stations_70
Columns: call_sign
frequency_mhz
city_of_license
erp_w
fcc_info

Question: What is average frequency MHZ when is in portales, new mexico?
SQL: SELECT AVG("frequency_mhz") FROM radio_stations_70 WHERE "city_of_license" = 'portales, new mexico'

Question: What is FCC info when ERP W is larger than 92 and call sign has k264ba?
SQL: SELECT "fcc_info" FROM radio_stations_70 WHERE "erp_w" > 92 AND "call_sign" = 'k264ba'

Question: Which call sign has ERP Wlarger than 250, and Frequency MHZ smaller than 99.3?
SQL: SELECT "call_sign" FROM radio_stations_70 WHERE "erp_w" > 250 AND "frequency_mhz" < 99.3