Found a VHS tape with the 1984 PBS logo with a red split. Turns out, no one else has recorded it but has recreated it. This VHS dates back to 1988, and I think it was recorded from KETC channel 5, because when they sign off, they use a red split, despite me not living near the KETC area, I somehow got a hold of this. This variant was only used for special programming, I assume, and would be a sign off.
Note: fanmade/fake