[5] At night, while increasing its power to 5,000 watts, it also switches to a separate transmitter using a directional antenna with a six-tower array.

That tower site is off East 142nd Street near South Manistee Avenue in Burnham, Illinois.

[7][1] The station broadcast live coverage of the fire until smoke and heat forced them to leave the building.

[20] Personalities heard on the station during its jazz years included Marty Faye, Daddy-O Daylie, Olympic gold medalist Jesse Owens, and Dick Buckley.

[24] Daddy-O Daylie continued as a DJ on WGRT, hosting a morning jazz program.

[25][26] In 1971, the station's transmitter was moved to the Midland Warehouses on Western Avenue in Chicago.

[31][30] In 1980, the station began nighttime operations, running 5,000 watts using a directional array.

[35][36] In 1994, Johnson Publishing sold the station, along with 106.3 WJPC-FM, to Broadcasting Partners for $8 million.

[27][37] In June 1994, the station became "106 Jamz", airing an urban contemporary format as a simulcast of WJPC-FM.

[27][41][42] In June 1997, its FM sister station left the simulcast, adopting an urban gospel format as 106.3 WYBA.

[49] In May 1999, the station began airing a Spanish-language news-talk format as Radio Unica.

[2] Personalities heard on Radio Unica included Paul Bouche and Dra.

[57] Program hosts included Al Franken, Randi Rhodes, Janeane Garofalo, Rachel Maddow, Lizz Winstead and Chuck D.[57] The network launched on March 31, 2004.

[65] From August 2009, until August 14, 2010, WNTD carried "Avenue 950", programmed by Sovereign City Radio Services, which featured an eclectic mix of jazz, blues, standards, and adult contemporary from 6 p.m. to 5 a.m.[66][67] Relevant Radio continued to air during the remainder of the station's schedule.

[67] On August 15, 2010, the station began airing Relevant Radio full time.