Question: What is the ERP W for K236AM?
SQL: SELECT "ERP W" FROM "2-14993391-1" WHERE "Call sign" = 'K236AM';

Question: What is the average frequency in MHz for stations with an ERP W of 170?
SQL: SELECT AVG("Frequency MHz") FROM "2-14993391-1" WHERE "ERP W" = 170.0;

Question: What is K236AM's lowest frequency in MHz?
SQL: SELECT MIN("Frequency MHz") FROM "2-14993391-1" WHERE "Call sign" = 'K236AM';

Question: What class is assigned to frequencies lower than 90.5?
SQL: SELECT "Class" FROM "2-14993391-1" WHERE "Frequency MHz" < 90.5;

Question: What class is assigned to frequencies larger than 89.3 with an ERP W of 250?
SQL: SELECT "Class" FROM "2-14993391-1" WHERE "Frequency MHz" > 89.3 AND "ERP W" = 250.0;