RADIO ADVANCES 1929

by JOHN V. L. HOGAN

Radio Engineer and Inventor

THE growth of radio during 1929 has been not only in the improvement of technical processes and apparatus, but also in the organization and extension of its services and in the adaptation of radio principles to work in various other fields.

Public contact with radio is mainly through broadcast reception. Here the wide adoption of the A. C. type of screen-grid tube has provided receivers of greater selective ability and of exceptional sensitiveness; and it seems prob-able that newer developments will reduce the number of tubes required in order to obtain the most desirable results. There is also a definite trend toward the use of automatic and distant-operated station selecting devices, which further simplify the manipulation of home receiving sets.

Efficient transoceanic telephone service has been shown to be adequate for the relaying of international programs, and international radio telegraph service has been expanded. On the American continent there is growing a network of point-to-point telegraphic service by radio. Even television has now been shown to be capable of simpler and more dependable practical applications than many had thought feasible.

Popular Science Monthly – January 1930