If I recall correctly when the NJ PBS stations came on the air, some were saying, why? You got WNET (when PBS Channel 13 came on the air in 1962 it was WNDT), again people would say you got WNET & WHYY covering the state pretty well. I think WNET had a 1/2 hour news type program covering NJ News, but others felt the state deserved its own PBS station/s.
Actually, PBS came about in 1969 . . . so Channel 13 was an "educational station" (National Educational Television), until then.
NJ (my home state) was always looked at as "the poor state" without a commercial TV station, after WNTA went PBS in 1962. I heard they got money from many of the NYC commercial stations, to help them in their venture . . . plus the talk was to get rid of a competitor commercial station in the NYC market.
NJ got it own TV station, again - when the Channel 9, NYC license was moved to Secaucus, NJ around 1983 or so, by 1986 WOR-TV Channel 9 moved to new studios in Secaucus, NJ.
This move to Secaucus, was because the FCC was going after RKO's General licenses, RKO owned WOR-TV and may other TV & Radio stations around the country. The move to NJ by WOR kind of helped Channel 9 & RKO in its dealings with the FCC, but not totally - the FCC was still pressuring RKO to sell and they finally did.
With Montclair State taking over the operations, maybe the NJ PBS signals will all be saved.