I was scouring Internet Archive for various broadcasting material of all kinds for preservation purposes and while I did find some, I’m wondering: What is the best site to find both old and modern TV broadcasting materials and such?

I’m coming from reddit and due to r/Piracy’s rules (not counting protest-specific rule of only sexy John Oliver artwork allowed) and moderators I cannot say from which channel exactly unless you figure out how to cheat the system, but I’m really curious of this specific channel and the content it broadcast.