Seriously, I'm curious to know what happened and why today it's junk. Does it have to do with commercialization of TV?
As a note to folks, questions on the History Channel fall under the guideline of historiography and are not subject to the 20-year rule.
Hi, no information on the station's initial quality, but you may be interested in this post which discusses the change of mandate
You may also find this discussion of the BBC vs American public/commercial broadcasting of interest
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