Portable Pulse field-strength measuring equipment for use in the range 20-650 Mc/s
B.G. Pressey (left), W. Allen (in van), A.F.Wilkins (right)
Ditton Park, 1948?
Portable Pulse field-strength measuring equipment for use in the range 20-650 Mc/s
B.G. Pressey (left), W. Allen (in van), A.F.Wilkins (right)
Ditton Park, 1948?