Home > California > KOST 103.5 FM KOST 103.5 FM Webmaster Last updated : April 21, 2013 California Tweet Pin It KOST 103.5 FM :: www.kost1035.com So Cal’s Favorite Soft Rock. Soft rock with requests. Includes schedule, live and on-demand audio, video and talent information Related Radio Stations:ALTO suono RockClassic Long Island RadioRadio ALTO suonoBeat Groove FmMichigan Top Hits RadioRadio BinkongohM3 RadioTNT RadioSouth Devon Sound Tweet Pin It Tags:CA, California, KOST 103.5 FM, USA Leave a Reply Cancel reply Your email address will not be published. Required fields are marked *Name* Email* Website Notify me of follow-up comments by email. Notify me of new posts by email.