Responders to my previous thread about the first Independent stations got me thinking about the early days of Educational TV.
I'm really not certain about how Educational TV stations started, later to be part of PBS. I know that in NYC, Channel 13 was struggling as an Independent, broadcasting in Italian several hours a day. It also signed on late and was off the air earlier than other NYC stations. So I suppose when a non-commercial group was formed, it figured it could buy Channel 13 rather than having to put an inferior signal UHF station on the air, which is what happened in many cities, the largest of which was Los Angeles.
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I was too young to remember first hand when Channel 13 in NYC went non-commercial. But I remember some early shows aimed at kids on 13: Misteroger's Neighborhood (at the time, Misteroger's was all one word), What's New (a science show for kids, similar to Mr. Wizard) and The Friendly Giant, a 15 minute import from Canada.
I remember even now that production values for Channel 13 were primitive. Sometimes they'd just have a clock with the call letters and channel number show you how long it would be before the next program would air. And it included the NET Owl. The early forerunner to PBS, called NET, National Educational Television, used a line drawing of an owl as its symbol. No doubt because owls are supposed to be wise.