Ulysses Jenkins’ work has long made prescient use of technology. Theorist Gene Youngblood is seen giving a lecture in a still from Ulysses Jenkins’ “Televiews and Cable Radio,” 1981. “Televiews and Cable Radio” is now on view at the Hammer Museum as part of the artist’s ongoing retrospective, “Ulysses Jenkins: Without Your Interpretation.” The show was organized by Hammer associate …