in early october 2005, wtkl and (bayou 105.3) switched frequencies. on march 23, 2006, the station returned to the air as wtkl with a classic hits format with the "kool" name, formerly of kool 95.7. only three weeks later, it was decided by entercom to discontinue that format and return to the wwl simulcast, citing positive listener response to wwl being able to be heard on fm (and complaint about its removal), along with issues in the new orleans cbd with am reception, though the decline of the 50s/60s oldies formats and new orleans' decline in population among those 55 and older also played a role in the change. the "kool 105.3" format continued as an internet-only webcast for a short time thereafter.