Special transmission components

Abstract

Summary form only given. Talking once again of P.C.M transmission, we must mention the multiples of order higher than 32, whose signals are obtained by successive concatenation of P.C.M. (base) signals. The analog multiplex transmission required the development of high performance components, such as transistors used in multiplex analog links at 60 MHz (10.800 channels), having very low noise figure and transition frequency higher than 3 GHz.