WPNO signed on October 28, 1955 as WKTQ under the ownership of Oxford Broadcasting Corporation. In its early years, WKTQ's programming included news, music, and sports. The station affiliated with the Mutual Broadcasting System in June 1965, and switched to ABC Radio's Entertainment network in 1972. By this point, WKTQ had a variety format that included 42 hours a week of country music. The call letters were changed to WKTP in 1973. Richard Gleason, owner of WOXO in Norway, bought WKTP for $130,000 in 1976 and changed its call letters to WXIV. The station had a country music format at the time; by 1977, WXIV had changed to a top 40 format, with 80 percent of the programming simulcast on WOXO. WXIV's call letters were changed to WOXO on November 23, 1981; the station continued to simulcast with WOXO-FM, which changed to a country music format that year. Later in the 1980s, the station shifted to religious programming; this programming was simulcast on WTME in Auburn, which Gleason purchased in 1985. The call letters were changed back to WKTQ on January 15, 1986. The simulcast on WTME moved to 1240 AM in Lewiston in 1990, after Gleason acquired that facility and shut down the 1530 AM transmitter. WLLB in Rumford began simulcasting WKTQ and WTME in 2001, following Gleason's purchase of that station; later that year, WLLB took the WTME call letters from 1240 and moved to 780 AM. WKTQ returned to the WOXO call letters on August 1, 2016; at that time, the station began to simulcast on W245CQ and took on the country music format previously heard on WOXO-FM, which changed its call letters to WEZR-FM and began simulcasting WEZR's hot adult contemporary format. WOXO and W245CQ concurrently inherited the existing simulcast of the country format on WTBM in Mexico, which took on the WOXO-FM call sign. In April 2019, WOXO and W245CQ split from the simulcast with WOXO-FM and began simulcasting the hot adult contemporary format of WEZR under the "Z105.5 & 96.9" branding; the country music format concurrently moved back to WEZR-FM. The call sign became WPNO on September 26, 2019. WPNO, along with its sister stations, went off the airMarch 29, 2020, citing financial considerations that included expected reduction in advertising revenue attributed to COVID-19. The stations had been up for sale following the death of owner Dick Gleason in February 2019. A sale of the Gleason Media Group stations to Bennett Radio Group is pending.
