![Former KOST-FM host Mark Wallengren says he's doing just fine one year after going off the air – Orange County Register Former KOST-FM host Mark Wallengren says he's doing just fine one year after going off the air – Orange County Register](https://www.ocregister.com/wp-content/uploads/2021/03/OCR-L-KOSTXMAS-1109-04-1.jpg?w=978)
Former KOST-FM host Mark Wallengren says he's doing just fine one year after going off the air – Orange County Register
![KOST 103.5 on Twitter: "Tune in a 'Best of the '80s Weekend' happening now on KOST 103.5! Lots of great '80s songs, you haven't heard in a while, mixed with today's biggest KOST 103.5 on Twitter: "Tune in a 'Best of the '80s Weekend' happening now on KOST 103.5! Lots of great '80s songs, you haven't heard in a while, mixed with today's biggest](https://pbs.twimg.com/media/FUbGg0ZWIAA5WaS.jpg)
KOST 103.5 on Twitter: "Tune in a 'Best of the '80s Weekend' happening now on KOST 103.5! Lots of great '80s songs, you haven't heard in a while, mixed with today's biggest
![KOST 103.5, with help from Gwen Stefani and Santa Claus, turns on Christmas and holiday music format – Orange County Register KOST 103.5, with help from Gwen Stefani and Santa Claus, turns on Christmas and holiday music format – Orange County Register](https://www.ocregister.com/wp-content/uploads/2019/11/OCR-L-KOSTXMAS-1109-01-1.jpg?w=1024)
KOST 103.5, with help from Gwen Stefani and Santa Claus, turns on Christmas and holiday music format – Orange County Register
![Radio personality Ellen K talks about her life in radio from small-town Indiana to host of the KOST-FM morning show – Daily News Radio personality Ellen K talks about her life in radio from small-town Indiana to host of the KOST-FM morning show – Daily News](https://www.dailynews.com/wp-content/uploads/2019/08/LDN-L-ELLENK-005-0804-1.jpg?w=978)
Radio personality Ellen K talks about her life in radio from small-town Indiana to host of the KOST-FM morning show – Daily News
![KOST 103.5 on Twitter: "LAST CHANCE! Contest ends at midnight tonight! For a chance to win a a 4-pack of tix, show us you're listening to KOST by tweeting or instagramming a KOST 103.5 on Twitter: "LAST CHANCE! Contest ends at midnight tonight! For a chance to win a a 4-pack of tix, show us you're listening to KOST by tweeting or instagramming a](https://pbs.twimg.com/media/DQU-j7qUIAAX5tc.jpg)