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WWDT signed on in October 1946 as a DuMont primary, with NBC as a secondary affiliation. By March 1947, the situation had flipped at WWJ. The station was now NBC primary with secondary DuMont affiliation. CBS and ABC were also secondary affiliations until WJBK (CBS) and WXYZ (ABC) went on the air in late 1948. WJBK took the DuMont affiliation in 1948, leaving WWJ with just NBC.
In 1955, CKLW in Windsor took the DuMont affiliation until the network shutdown in August 1956. Nobody knows for sure how much DuMont programming CKLW actually carried in this period. Network operations at DuMont seem to have ground to a halt with the exception of the occasional sporting event after mid-1955.
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