[4] WZON transmits with 5,000 watts, using a non-directional transmitter by day and a directional pattern at night to protect other stations on 620 kHz.

It also aired a local afternoon talk show, Downtown with Rich Kimball, which featured a national guest list including filmmaker Ken Burns, actors Stephen Tobolowsky, Peri Gilpin, comedians Paula Poundstone and Lewis Black, and musicians like Rosanne Cash, Jimmy Webb, and Peter Asher.

[13] However, in 1944, to help pay off an outstanding note, Guernsey was forced to sell WLBZ at auction to the Rines-controlled Eastland Broadcasting Company.

[14] A television sister station was added in 1958, when the Rines' Maine Broadcasting Company acquired WTWO (channel 2)[15] and renamed it WLBZ-TV.

[18][19] WLBZ returned to its a modified version of its previous format, featuring more "uptempo" songs, on May 16, 1977,[20][19][21] ahead of NBC's closure of NIS; station manager Edward Owen told the Bangor Daily News that Bangor did not have the population density to sustain an all-news format, noting that WCSH in Portland would continue as an all-news station locally.

[35] After reconsidering this plan, on September 1, 1988, the station—still branded "Z-62" and by then focused on rock 'n' roll and blues—was transferred to Bangor Public Communications, headed by King, and began operating on a noncommercial basis.

[38] Tozer, a Bangor dentist,[35] returned WZON to commercial operation that August with a talk and sports format, including CBS Radio Network newscasts and features.

WZON remained unprofitable, and after two years Tozer sold the station to Nancy E. Boyd's NEB Communications.

[43] Some of WZON's talk programs, including Limbaugh and local morning show Leo and Paul, moved to FM station WSNV,[44] which eventually became WVOM.

[46] Stephen King expanded his Bangor-area radio holdings in 1995, when he purchased WKIT-FM and WNSW (the former WGUY) in Brewer from H & L Broadcasting.

[48] In 2001, the Kings purchased WDME-FM in Dover-Foxcroft from Mid-Maine Media;[49] that station began simulcasting WZON by March 2009,[50] and changed its call sign to WZON-FM that August.

[52] The AM station also began carrying the progressive talk lineup on November 1, 2010, replacing ESPN Radio programming.

[55] Outside of drive time, WZON's progressive talk format largely relied on nationally syndicated programs, including Thom Hartmann, Bill Press, Leslie Marshall, Marilu Henner, Clark Howard and Overnight America with Jon Grayson.

On December 2, 2024, King would announce that WZON and its sister stations would shut down at the end of the month, citing continued financial losses and his own old age.

[62] WZON announced that its tower was slated to be dismantled in January 2025 in a DX test broadcast on December 22, 2024, effectively ruling out any uninterrupted transfer of ownership.

[62] In February 2025, the Zone Corporation agreed to sell WZON, WZLO, and W252CT to J Hanson's Mix Maine Media, operator of WBAN and WGUY in Veazie and owner of WFMX and WSKW in Skowhegan and WCTB in Fairfield.

As part of the $125,000 deal, $75,000 will be donated to the Heart of Maine United Way; Hanson will also pay for half the cost of removing the WZON and W252CT towers.