Ah, the #1970s and #1980s! That was when Corona / Los Angeles station KBSC-TV52 became "ON Subscription Television" and scrambled their signal. No more could one watch reruns of Speed Racer and Yuusha Raideen, because it was now a pay movie channel. I saw my first and only Friday the 13th movie on On-TV one weekend at the twins' house. (Wealthy friends ... their family also had…