Radio Digest (Oct 1923-July 1924)

>* A> \T OC1B613401 New Two-Tube Reflex Crystal Neutrodyne Set; 58 Advance Programs; A-B-C Lessons for Radio Beginners; How to Operate and Locate Troubles I EVERY i = m f^SSEAtl^ ^ a TEN CENTS REG. U. S. PAT. OFF. & DOM. OF CANADA Vol. VIII Copyright 1924 By Radio Digest Publishing Co. SATURDAY, APRIL 5, 1924 No. 13 SIMPLIFIES "SUPER-HET" POPE PIUS TUNES IN HIS GIFT SET AERIAL POLE RIGGED ON TOP OF VATICAN Pontiff, Now Able to Keep in Closer Touch with World, Enjoys Broadcast Reception LONDON. — Pope Pius has joined the great crowd of listeners in. A British Radio firm has presented him with a Radio receiving set and the recent rearing of a slender aerial pole on top of the Vatican has become a striking si^n of changing limes. The Pontiff blessed the installation after appropriate ceremonies and then heard the first call from London. Cardinal Gasparri, Papal Secretary of State, and several domestic prelates were present. Pope Pius has expressed great pleasure over the gift, which has put him in touch with the entire world without an intermediary. The importance of the installation is enhanced by the fact that though the Pontiff enjoys diplomatic immunity like every other sovereign, his mails and cables must pass through Rome's central offices. From Saturday on, however, he can dispense with these when he desires. One of the grievances which all pontiffs from Pope Pius XI down have had against separation laws is that the Vatican has been unable to communicate with the outer world directly. This objection is row partially removed. WPAL Received in Argentine COLUMBUS, O. — WPAL, Superior Radio Company, here, has been received with absolute clearness at Tunuyan, Argentine Republic, 6000 miles away. ARMSTRONG BRINGS OUT NEW SCHEME Does Away with at Least One Tube on "Rolls Royce" Receiving Set Tells of Second Harmonic Novel Idea Unfolded Before I.R.E. May Make Set Within Reach of All Fans NEW YORK.— Elimination of one tube from the well-known super-heterodyne receiver by its inventor, E. H. Armstrong, is hailed with delight and import by Radio engineers. At the recent meeting here of the Institute of Radio Engineers, the man who once owned the regenerative receiver patent, showed technicians he still had several tricks to perform when he, by what is known as the "second harmonic." caused the first detector tube to "double" for the oscillator tube. The secret of Mr. Armstrong's improvement lies in the second harmonic, a mysterious term which will be explained. But to the practical mind the improvement has but one meaning. One less tube! Inasmuch as the "super-net" usually de(Continued on page 7) When Station WJAX, Union Trust Co., Cleveland, inaugurated their series of morning half-hours for women, they were fortunate in having the series opened with a talk on "Art in the Home," by Miss Elaine Ivans (left), the winsome "Rosemary" of the "Abie's Irish Rose" company." "Abie" can hardly be blamed for loving his "Rosemary" if she looked anything like Miss Ivans. Ethel Bell (above), singer of popular classics, recently sang at Station WOR, Newark. Miss Bell appeared on the same program with Jimmy Clark and his White Way Entertainers. Mrs. Samuel Payne Reed (right), who recently gave a violin and soprano concert from KPO