WMSJ (89.3 FM; "K-LOVE") is a radio station airing the K-Love contemporary Christian music format, licensed to Freeport, Maine and serving the Portland area. The station is owned by Educational Media Foundation.^[2] WMSJ's programming is also heard on a translator in Lawrence, Massachusetts, W260AS (99.9 FM).

The 89.3 FM facility signed on November 29, 1997.^[3] WMSJ's programming had originated in July 1993 on 91.9 FM in Harpswell;^[3] after 89.3 went on the air, the 91.9 frequency was sold to the Bible Broadcasting Network and became WYFP.^[4] Originally known as "Joy 89.3," the station rebranded to "Positive 89.3" in July 2005.^[5] W260AS in Lawrence signed on in February 2008.^[6]

By September 2010, the station's owner, The Positive Radio Network, shared several board members with Bethesda Christian Broadcasting, another operator of religious radio stations;^[7] the following year, WMSJ was transferred to Bethesda.^[8][9] In January 2015, Bethesda Christian Broadcasting reached a deal to sell WMSJ to Educational Media Foundation; the sale closed on June 10, 2015, at a purchase price of $925,000, at which point the station joined EMF's K-Love network.^[2]