VADIM MANASSEWITSCH graduated from Columbia University in 1959. Since 1981, he has worked independently as a consultant, teaching frequency synthesis and designing state-of-the-art synthesizers--his specialty for twenty-seven years. Previously, he served as an electrical engineer with Manson Laboratories, Inc., as a project engineer with Westrex Company--a division of Litton Industries--and as a member of the technical staff of RCA's Surface Communications Systems Laboratory. He worked as a project engineer for Polarad Electronic Instruments, as a senior member of the technical staff of ITT's