| 10/02/61 | WBBY on air, licensed to Madison County Broadcasting Company. |
| 4/15/65 | Call letters changed to WRTH |
| 3/16/69 | Control transferred to Avco Broadcasting |
| 10/77 | Control transferred to King Radio Broadcasting |
| 9/1/88 | Call letters changed to WKLL, owner Adams Communications |
| 11/01/89 | Call letters changed to WCEO |
| 1/29/91 | Call letters change to KEZK |
| 7/09/93 | Call letters changed to KFNS, control transferred to Compass Radio Group |
| 11/95 | Control transferred to Par Broadcasting |
| 4/09/96 | Control transferred to EZ Communications |
| 8/96 | Control transferred to American Radio Systems |
| 1/98 | Control transferred to Missouri Sports Radio |
| 6/01/04 | Control transferred to Big League Broadcasting |
| 8/13/2010 | Control transferred to Grand Slam Sports |
| 10/31/2014 | Went dark. |
| 10/2015 | Control transfer to receivership of Market Radio Group |
| 11/5/2015 | On the air |
Call Letters:
WBBY
WRTH
WKLL
WCEO
KEZK
KFNS
AM/FM:
AM