sep2
One of the problems with the S.E.P.2 was because it was all Magnetic Amplifiers and they tended to "drift "we were always trying to reset the potentiometers to rectify this problem this made the a/c wander in which Mode it was in . I think have my course notes but they were all "techie"[if the mice havent eaten them it was such a long time ago and i could find them] I know an old Vanguard Captain I'll ask him what problems he had.