New Jersey Public Television (NJPTV) started broadcasting on April 5, 1971 on WNJT (channel 52) in Trenton, and would be joined by WNJS (channel 23) in Camden & Atlantic City on October 23, 1972, WNJM (WNJN since 1994) (channel 50) in Montclair & Newark and WNJB (channel 58) in New Brunswick & the Amboys on June 2, 1973.
New Jersey Network
NJPTV rebranded to the New Jersey Network (NJN) in 1981.
The network's name was shortened to NJN in 1986. In 1994, WNJM changed their callsign to WNJN to match the network's initials.
The NJN television stations were sold to a consortium led by New York City-based/Newark-licensed WNET, with the former NJN radio stations acquired by New York Public Radio (four stations) — which owned WNYC and WQXR-FM — and WHYY (five stations, which were turned into WHYY repeaters).