CREATE TABLE table_19053 ("Call sign" TEXT, "Frequency MHz" TEXT, "City of license" TEXT, "ERP W" FLOAT, "Height m  (  ft  ) " TEXT, "FCC info" TEXT, "Notes" TEXT)

what's the frequency mhz with city of license being chattanooga, tennessee
SELECT "Frequency MHz" FROM table_19053 WHERE "City of license" = 'Chattanooga, Tennessee'
SELECT "Frequency MHz" FROM "table_19053" WHERE "City of license" = 'Chattanooga, Tennessee'