Unfortunately, due to hardware failure, 91.5 FM’s over the air HD service is temporarily unavailable on your radio in the Los Angeles and Orange County areas. We are working to bring it back as soon as possible. Until then, HD radio will not be available in cars or HD home radios. Radio “now playing” data will still be presented in most cars and on radios. Our engineers are actively working on the situation and hope to restore HD as soon as possible. In the meantime, you may explore the many ways to listen to KUSC for more streaming options. We sincerely apologize for the inconvenience.