WJMY-TV is a defunct television station based in Allen Park, Michigan

Allen Park, Michigan

Allen Park is a city in Wayne County in the U.S. state of Michigan. As of the 2010 census, the population was 28,210. The suburb of Detroit was recognized in Money Magazine's list of America's Best Small Cities. Allen Park is part of the collection of communities known as DownriverFord Motor...

 assigned to channel 20 for the Detroit

Detroit, Michigan

Detroit is the major city among the primary cultural, financial, and transportation centers in the Metro Detroit area, a region of 5.2 million people. As the seat of Wayne County, the city of Detroit is the largest city in the U.S. state of Michigan and serves as a major port on the Detroit River...

 market following WPAG-TV

WPAG-TV

WPAG-TV was a television station in Ann Arbor, Michigan assigned to Channel 20 from 1953-1957.WPAG, Washtenaw County's first TV station, first signed on in April 1953; it was also one of the first UHF stations in Michigan, with Saginaw's WKNX-TV signing on the same month.WPAG-TV was owned by the...

 going off the air in December 1957.

In 1967, WJMY-TV was awarded a construction permit

Construction permit

A construction permit or building permit is a permit required in most jurisdictions for new construction, or adding on to pre-existing structures, and in some cases for major renovations. Generally, the new construction must be inspected during construction and after completion to ensure compliance...

 for channel 20, but never made it to the air except for a brief test signal for at least two weeks in 1968, consisting merely of a card displaying its calls and city-of-license.

Finally, in November 1972 WXON

WMYD

WMYD is the MyNetworkTV-affiliated television station for Southeast Michigan licensed to Detroit. It broadcasts a high definition digital signal on UHF channel 21 from a transmitter on Eight Mile Road in Oak Park along the Oakland and Wayne County line. The station can also be seen on Comcast...

purchased WJMY's construction permit and shifted to channel 20 for good.