Design Considerations on Line Equipment for 10 800 Voice Channels

This paper outlines the planning fundamentals of a 60-MHz coaxial system and describes the equipment concept for the transmission line. This is followed by design considerations on wideband repeaters; measurement results on transistors and various amplifier circuits are then discussed. The following problems and their solutions are also taken into account: remote power supply, power filters, dropping filters, automatic level control, and fault locating. Progress in transistor technology and in hybrid integrated circuits promises good technical solutions to the problems encountered.