WPSV-FM

{{Infobox radio station|image1=WPSV.svg|city={{W|Joliet, Illinois}}|broadcast_area={{W|Chicago metropolitan area}}|frequency=91.7 MHz|branding=Praise 740-91.7|slogan=Chicago's Inspiration Station|format=Urban gospel|subchannels=HD2: Majic 101.5 (Urban AC) HD3: K-Love ({{W|WCKL (FM)|WCKL}})|translators=101.5 W552AG ({{W|Hammond, Indiana|Hammond}}}, relays HD2)|owner=|licensee=Radio One Licenses, LLC|first_air_date=March 16, 1956|former_callsigns=WJCN (1956-1976) WKOK (1976-1993) WCMX-FM (1993-1998) WJMJ-FM (1998-2006) WROI (2006-2017)|callsign_meaning=Originated from sister station WPSV}}

WPSV-FM (91.7 FM) s a commercial radio station in Joliet, Illinois that serves the Chicago metropolitan area. The station is owned by Urban One and carries an urban gospel format as a fulltime simulcast of WPSV. WPSV's studios are located at the 16th floor of 303 East Wacker Drive in the Chicago Loop, with transmitters being located atop the Willis Tower in the Loop.

As WJCN
On March 16, 1956, WJCN would launch on the radio airwaves. The station was originally owned by The Concert Network and carried a classical music format, much like other TCN owned stations. At the time, FM stations were usually co-owned by an AM station, and that was usually because FM stations weren't as popular as they were now. However, The Concert Network never owned an AM station throughout their history, as a result of this, all of TCN's FM stations are separately ran.

In 1971, The Concert Network would sell WJCN to Multimedia Broadcasting. From their, the station would flip to a news talk format under the branding "All-Talk 92 WJCN".

92K/Soft Rock 91.7
On August 23, 1976, WJCN would change its call letters to WKOK and would to an progressive rock branded as "92K". 92K proved to be a modest success and because of that, the station would expand its music catalogue becoming an mainstream rock station. 92K was a popular rock station during its launch until its downfall in 1986.

On July 7, 1986, 92K's ratings started to fall, in response the station would flip to an adult contemporary format branded as Soft Rock 91.7, still retaining its WKOK call-letters. Under the AC format, it rivals WLIT-FM.

Chicago's Mix 91.7
On February 24, 1993, WKOK would change its format again, this time to a hot adult contemporary format branded as "Chicago's Mix 91.7" and with the call-letters WCMX-FM. The first song to play on Chicago's Mix 91.7 was "You Could Be Mine" by Guns N' Roses.

In 1995, Multimedia would merge with Gannett. Gannett would then sell WCMX-FM to American Radio Systems. In 1998, ARS would merge with Infinity Radio. However during the merger, Infinity was over the limits and thus sold ARS' Chicago cluster including WNTY-FM, WYCU, WAPM, WCMX-FM, WPTX to the African-American controlled Radio One (later known as Urban One).

Majic 91.7
Soon after WCMX's sale to Radio One, the company would change the station's format to an urban adult contemporary format branded Majic 91.7 with the call-letters WJMJ-FM. The last song to play on Chicago's Mix 91.7 was "Look Into My Eyes" by Bone Thugs-n-Harmony, while the first song to play on Majic 91.7 was "I Belong to You (Every Time I See Your Face)" by Rome. The "Majic" branding was also used by Radio One for its other Urban AC stations.

The format was meant to compliment WNTY-FM's younger audience, as WJMJ-FM aims at an older audience.

WROI Sports Radio
In an attempt to extended to sports radio, Radio One would drop WJMJ-FM's urban AC format on July 7, 2006, with the last song played on Majic 91.7 being "Come to Me" by Sean Combs. The station would adopt an all sports format on the very same day branded "WROI Sports Radio 91.7". The station would change its call-letters to WROI on August 1, 2006.

On June 18, 2008, sister station WRMB would drop its Regional Mexican format and switched to a simulcast of WROI as WROQ, and both stations would change their brandings to "WROI Sports Radio 91.7/106.9".

Boom
On November 13, 2014, WROI and WROQ would their sports radio format and switched to a classic hip hop format branded as "Boom 91.7/106.9". This was in response to the popularity of KROI's classic hip hop format. The first song to play on Boom 91.7/105.7 was "Hypnotize" by The Notorious B.I.G.

On February 2, 2014, WROQ would split from its simulcast of WROI and adopted an adult hits format using the "Jack FM" brand. As a result of this, WROI's branding was changed to "Boom 91.7".

While the format started out successful, much like other Boom branded stations owned by Urban One, ratings started to plummet at a uncontrollable rate.

Simulcast of WPSV
On July 18, 2017, WROI would flip to a simulcast of WPSV, and as a result WPSV would change its branding to "Praise 740-91.7". Shortly after this, WROI changed its call-letters to WPSV-FM.