Table: radio_stations_28
Columns: call_sign
frequency_mhz
city_of_license
erp_w
class
fcc_info

Question: What is the name of call sign that uses a Frequency MHz of 91.1 fm?
SQL: SELECT "call_sign" FROM radio_stations_28 WHERE "frequency_mhz" = '91.1 fm'

Question: How much is the total ERP W for an 107.9 fm freqeuncy MHz?
SQL: SELECT COUNT("erp_w") FROM radio_stations_28 WHERE "frequency_mhz" = '107.9 fm'

Question: Can you tell me what is FCC info for harmony township, new jersey?
SQL: SELECT "fcc_info" FROM radio_stations_28 WHERE "city_of_license" = 'harmony township, new jersey'

Question: What is the smallest ERP for allentown, pennsylvania?
SQL: SELECT MIN("erp_w") FROM radio_stations_28 WHERE "city_of_license" = 'allentown, pennsylvania'