I'm starting to go through a bunch of my old tapes again - so fair warning if you're a subscriber of my channel - you're about to run into a bunch of 1986-89 Houston & Cable TV content.
That said, a more recent upload aside from commercials & movie opens & news stuff focuses on the sequences or segments I've simply just dubbed "legalese" in my uploads. They are the moments where general information about the station, technical data and copyright information is relayed and may or may not be accompanied by the SSB or similar patriotic song or sequence.... but don't necessarily lead to a sign-off or sign-on.
This one is from KRIV, circa April 1986 (I've been able to narrow down to the week based on the episode of Star Search in a commercial compilation I posted), and runs just under 30 seconds. The first image is actually a vantage point from the roof of the former studios on Westheimer Road and Weslayan Street - one that would be recognizable to viewers of the Midday News in the early 90s, as this was often the backdrop for Matt Lavine's weather segment on the roof.