The station signed on the air on December 2, 2006 on 104.7 FM,[1] originally on a special events permit issued by Industry Canada.
As a way to comply with the special events license, CJNU operated as a means of spreading awareness for various non-profit organizations and charities in the Winnipeg area.
Businesses or companies also sponsored portions of the broadcast day to assist the station in its mission to keep nostalgia music on the air.
While its air time is no longer restricted, CJNU continues to sponsor a charity on a monthly basis as before.
In 2016, CJNU became the new radio home of the Winnipeg Goldeyes of the American Association of Independent Professional Baseball under an initial 3-year deal, replacing CFJL-FM.