Indianapolis Times, Volume 36, Number 282, Indianapolis, Marion County, 9 April 1925 — Page 19

PRISMATIC RING TO AID SEEING Inventor Claims We Can See by Wireless. Bv United Ureas BALTIMORE, Mil., April 9.—The radio fan of the future may sit in his home and watch the ball game he is hearing announced; see the president as he hears him speak; or follow the class room demonstration as he listens to the protestor's lecture. That prediction was made before the meeting of the American Chemial Society here by C. Francis Jenkins, of Washington, D. C., as he explained the “prismatic ring” which he has developed.’ The ring picks up the delicate rays of light from the ether, just as the radio receiver picks up the sound waves. Its development to a point of general use, Dr. Jenkins predicted, is not far distant. He pictured it not only of use in radio, but of military value, when carried aloft by airplane. It would permit, he said, a general watch of all that transpire on the battlefield, or behind the enemies lines. KELLET HEARS ORATORIO GIVEN ‘Pilgrim's Progress' Broad- ' cast From London. Dr. Edgar Stillman Kelley, holder of a creative fellowship at Western College, Oxford, Ohio, has just returned from London, where he was invited to be present at the broadcasting of his “Pilgrim’s Progress” from Covent Garden, London. Early In January Kenneth Curwen, manager of the conceits under the auspices of the English government, made arrangements with Dr. Kelley for ‘he production, March 12, of Pilgrim’s Progress by the Wolverhampton Musical Society, at the Covent Garden broadcasting station. London. Dr. Kelley, accompanied by Mrs. Kelley, sailed for England, Feb. 21. Dr. Kelley’s "Pilgrim’s Progress” was the first of a series of American compositions to be broadcast. It was heal'd in England and by 50,00(1,000 persons, it is said, on the continent. TUNE IN FOR QUALITY' Radio fans were advised to seek quality rather than distance, especially during the summer months, by L. R. Carver, former electrical research engineer of Fairbanks, Morse and Company, addressing Broadcast Listeners’ Association at Hotel Severin Wednesday night.. Improper tuning of sets was ascribed as of much static ard owners were advised to obtain a ground other than the waterpipe by Carver. Movie Teaches Radio How parts of radio receivers, are made has become a regular topic for movie films. A Hollywood firm issues such films weekly.

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Here Is the fellow who is responsible for all of those deep mellow bass notes that you hear when listening to the Gus Edwards Orchestra from WFBM, the Indianapolis station of the Merchants Heat and Light Cos. Polk studied under his father, who was a famous Candian bandmaster. He was overseas during the world

Short Cuts

Things to Know in Building and Operating a Receiver

Mount 1%-volt C batteries between two double binding posts. The lower screws in the binding posts secure the leads to the battery* and the upper ones are replaced with 6-32 machine screws to support the cell and also make the positive and negative connections. • • • To try out various fixed condensers in a circuit, mount two clips on a piece of hard rubber so you can insert the condensers at will. Binding posts on the instruments then may be connected to the screws in the clips by short pices of wire. • • • A good sized screwdriver if magnetized, will pick up screws that have been dropped in places you cannot reach with fingers or pliers. • • • Ordinarily these grid-leak values are correct: for 201A tubes, 2to 3%

The Voice Frcm WOAI 1

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J. G. Cummings, announcer at station WOAI (San Antonio, Texas) Is called “Silent Joe,” because he once fell asleep on a testing job. But he has maintained an alert attitude ever since.

THE INDIANAPOLIS TIMES

Joe T. Polk, Jr.

war as a member of his father’s band one of the most popular in the Canadian Army. After his return he was for a year with the Kilties Band and later played under the direction of Creatore. Polk joined the Edward’s organ.zation over two years ago when the orchestra was touring Canada.

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MRS. DE FOREST TO BROADCAST Wife of Inventor Is Famous • Dramatic Soprano. Now that “air recitals” by leading concert and operatic artists have been introduced by the Victor, Brunswick and others, the next tsep forward is recital broadcasting by independent artists, and among the first of these to be announced is that of Mary Mayo De Forest, brilliant dramatic soprano, who has just returned from a concert tour of the Riviera, and will sing over WEAF and its litany of stations April 14. This recital will mark the air debut of Mrs. De Forest, who in private life fs the wife' of Dr. Lee De Forest, so-called “the Father of Radio.” "It was exactly sixteen years ago this spring, Dr. De Forest tells me,” she said, “when the Metropoli-

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tan Opera House was used for thf broadcasting of the greatest voice O* our times—that of Enrico Caruso. "Ships at sea equipped with radio receiving apparatus picked up his golden notes—a few pioneer amateurs heard him. When Caruso broadcast it was to one of the smallest audiences of his career—visualize what the size of that unseen audience would be today.” Battery Causes Fading Fading of distant stations may be caused at the receiving end through a Blight drop in the voltage of the "A” or "B” battery. This condition may be recognized by tuning when the signal begins to fall. Indicating battery trouble if the rig* ral can be brought back lmmedl ately. C. Batteries Fasten C. batteries to the has* board -with a loop of bus bar, ill the ends of which has been made an eyelet big enough to take a small screw.

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