WLTI is a radio station licensed to New Castle, Indiana which serves the Muncie-Marion, Indiana, radio market. It is a Real Country affiliate, which is a 24/7 format distributed by Cumulus Media Networks, a subsidiary of WLTI's owner, Cumulus Media. This station operates at an effective radiated power of 250 watts on AM frequency 1550. Originally known for many years as WCTW airing traditional middle of the road programming, the station changed call letters to WMDH in 1991 to match up with its FM sister station. For many years, WMDH featured a news/talk format followed by a long stint as Adult standards with programming supplied by The Music of Your Life 24/7 satellite format and later with Citadel Media's Timeless Classics.
In early 2010 Timeless ceased operations, forcing WMDH to change format. In early 2010, WMDH flipped to a gold-heavy country format to complement its sister station, WMDH-FM, utilizing Citadel Media's Real Country format. In 2010, Citadel Broadcasting opted to retain the call letters of a station that changed format in Syracuse, NY to keep for future use. The FCC does not allow stations to retain call letters that are not on a station's licensed, Citadel decided to 'park' them temporarily on WMDH. As a result, on March 19, 2010, 1550 AM became WLTI. The existing classic country format remained in place. Citadel merged with Cumulus Media on September 16, 2011.
The WCTW call letters are now used at an FM station in Hudson, New York. The WMDH-FM call letters continue to be used on WLTI's sister station in New Castle.