Question: what is the city of license for the station with the frequency mhz less than 102.3 abd erp w of 25?
SQL: SELECT "City of license" FROM "2-12840409-2" WHERE "Frequency MHz" < 102.3 AND "ERP W" = 25.0;

Question: \What is the class of the station with the call sign W254AH?
SQL: SELECT "Class" FROM "2-12840409-2" WHERE "Call sign" = 'W254AH';

Question: what is the class of the station with erp w more than 30?
SQL: SELECT "Class" FROM "2-12840409-2" WHERE "ERP W" > 30.0;

Question: what is the highest frequency mhz with the call sign W292CU?
SQL: SELECT MAX("Frequency MHz") FROM "2-12840409-2" WHERE "Call sign" = 'W292CU';