By the start of 1963 Fred had designed and built his own prototype synthesizer - a simple voltage controlled, keyboard-operated unit for generating, shaping and switching electronic sounds - a small but significant development in the history of the synthesizer, as it predates the Synket, Moog and Buchla instruments.
Broadcast in 1963 on the ITV network, the sci-fi puppet show Space Patrol, is the first on British television to feature a specially composed electronic music soundtrack running throughout the whole series.