There's a piece of the history missing.  I DJ'ed on both KVET and KHFI at the same time in the late 60's.  (My program director at KVET discovered what I was doing, which was against station policy, but he didn't rat me out.)  The reason I was able to get away with it was because most of the KHFI programming at the time was canned.  There were several machines with open real tape and a rudimentary computer of sorts.  Mostly I just tended the machines.  I only read some live commercials and such on weekdays.  On Saturday or Sunday (I forget which), I did a DJ show that was tepid middle-of-the-road (MOR), like the tapes.  I also recorded the "book" for KHFI television - station promos, etc., while tending the machines.  - Dave Jones