Radio in 1929

Radio Record, Volume III, Issue 26, 10 January 1930, Page 8

Radio in 1929

Great Advances — ME. JOHN V. L. HOGAN, radio engineer and inventor, writes of the accomplishments of radio in 1929 in "Popular Science." The growth of radio during 1929 has been not only in the improvement of technical processes and apparatus, but also in the organisation and extension of its servic and in the adaption of radio princip ly to work in various other fields. , Public contact with radio is mainly} through broadcast reception. Her the wide adoption of the A.C. type of screen-grid valve has provided receivers of greater selective ability and of exceptional sensitiveness; and it seems probably that newer developments will reduce the number of valves required in order to obtain the most desirable results. Theve is also a definite trend toward the use of automatic and dis-tant-operated station selecting devices, which further simplify the manipulation of home receiving sets. Efficient transoceanic telephone service has been shown to be adequate for relaying international programmes 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.