CREATE TABLE table_54868 ("Call Letters" CLOB, "Market" CLOB, "Frequency" CLOB, "AOR Years" CLOB, "Current Format" CLOB)

What is the frequency of WMAD?
SELECT "Frequency" FROM table_54868 WHERE "Call Letters" = 'wmad'
SELECT "Frequency" FROM "table_54868" WHERE "Call Letters" = 'wmad'