 For more than a century, AM radio has evolved to meet the needs of our community. More than 80 million listeners depend on AM radio each month. AM radio is also the backbone of the emergency alert system, which keeps us safe in dangerous times. It's reliable, free, and public safety depends on it. Text AM to 52886 and tell Congress we need AM radio in cars. Message and data rates may apply. You may receive up to four messages a month, and you may text STOP to STOP.