By E. I. GREEN Values of the primary transmission constants R, L, G, and C for open-wire telephone lines are presented, and the factors which affect these constants in practise are discussed.
N T H E design of a new telephone transmission system a knowledge of the characteristics of the medium over which the waves are to pass is, of course, a prerequisite.
By now the results originally obtained by Shannon 1 relating reliability and channel capacity are well known.
T HE problem of directly transmitting drawings, figures and photographs from one point to another by means of electricity has long attracted the attention and curiosity of scientists and engineers.
The Bell System toll network consists of a hierarchy of toll offices interconnected by transmission paths called intertoll trunks.
The Bell System telephone network consists of a hierarchy of transmission facilities available for connecting one subscriber to another.
Consideration is given to the method of determining and expressing the transmission efficiencies of telephone circuits and apparatus, and of the desirable qualifications for a unit in which to expr
Because a traveling-wave tube can provide substantial, stable, microwave power output at high levels of gain with very little noise or distortion, it is used as the transmitting amplifier for the T
Aimed at answering important questions about the energy demand of current telecom infrastructure and the design of sustainable and energy-efficient future networks, the research of a number of Euro
N the beginnings of the telephone, the outstanding marvel was that the devices used as transmitters and receivers could perform the necessary conversions between speech sound waves and electrical w
