Among my many TM’s on WW-II and later radio sets, I have the Signal Corps Preliminary Instruction Book on the SCR-AO-283.  As far as I have been able to determine, a Final manual with a T.O. number assigned was never done.  One thing missing from the Preliminary is a full parts list. So the one from T,O, 08-10-74 on SCR-AR-283 has been added.

Full size reprint available.

Robert Downs