channel 25 is one of the nation's oldest uhf stations. it debuted on april 5, 1953 as wknx-tv on channel 57. it was owned by lake huron broadcasting along with wknx radio (am 1210, now wjmk at am 1250), and was a cbs affiliate. it also shared abc with dumont affiliate wtac-tv and then-nbc affiliate wnem-tv (which later became sister to the former wknx radio). the station first operated from studios located on south washington avenue in downtown saginaw. when wtac-tv shut down in 1954, wknx-tv and wnem-tv shared abc until wjrt-tv signed on in 1958. it moved to the stronger channel 25 on september 14, 1965. the station later relocated its studios to a new facility located on state street in saginaw.