Radio Digest (Oct 1923-July 1924)

RADIO DIGEST — Illustrated January 19, 192^ 5AVANTS SAY EARTH IS BEST CONDUCTOR ROGERS' TESTS OFFERED BY HIM AS PROOF Noted Radio Scientists' Theory Air Doesn't Carry Signals Is Demonstrated That BALTIMORE. — Further experiments by Dr. J. Harris Rogers. 74 years old, of Hyattsville, Md.. acclaimed a peer by such Marconi, Tesla and Steinmetz, whose Radio discoveries helped win the war, prove, it was reported here recently, his contention that the earth is a better conductor of the electromagnetic wave than the air. By means of Dr. Rogers' device, consisting largely of coils, antenna and loop whose assembly resembled a harp, installed in an air-tight copper lined well fifteen feet deep, in the laboratory of his home, he is said to have communicated easily and clearly a few days ago with Villanova college, Philadelphia, Pa. Sees Earth Best Conductor "Reception by means of the earth," he is quoted as having said, "has reached almost perfection. Greater distances may be attained with lesser energy. The fading of signals may be obviated and uniform strength of signals during the day or night and a greater reduction of static may thus be attained." Dr. Rogers' methods were recently substantiated by news messages from London that Marconi had heard London by means of a set 100 feet underground, that is, in the catacombs of Rome. In the rear of Dr. Rogers' laboratory is a room whose walls and ceiling are sheeted with iron but whose floor is earthen. In this room Dr. Rogers said he has received messages from distant places using the earth as a means of transmission. How He Helped Win War All of his tests since 1908 confirm his theory, Dr. Rogers said, that long-distance signals are conducted by the earth and not by the air. 1 he .Most Popular American Radio Circuits HOW SPORT EVENTS ARE "MIKED" Fights, baseball and football games often are tuned in by constant listeners, but few of these know how it is done. The above group is broadcasting a football game. Left to right, E. F. Grossman of WEAF is announcing scores to listeners by direct wire to Station WEAF; A. E. Potzman is talking by ordinary wire telephone to the WEAF operator. © Keystone View During the war Dr. Rogers constructed vised the digging of a well 50 feet deep a "dugout" near his home. He also super nearby, which well was lined with copper and sealed to exclude air. In these places and under the water of a small lake near his home and in the sea at Piney Point, St. Marys county, Md., Dr. Rogers established his apparatus which enabled the highest officers of the government in Washington and those of the allies to listen in to the messages of German war lords to their soldiers in the field. These experiments were conducted under intense secrecy to prevent the enemy from obtaining knowledge of them. It was the application of Dr. Rogers' contrivances, it was said, aboard vessels of the United States navy during the war that enabled them to operate virtually without risk of attack by enemy submarines. Additional revelations as to the possibilities of underground and underwater Radio communication are expected to issue soon from the Hyattsville laboratory. Lectures by Radio Extend Influence of New York "U" NEW YORK. — Convinced that its unexcelled educational facilities should, and can be, made to include a student body numbering hundreds of thousands instead of but a few hundred, New York University recently opened its campaign for Radio education by presenting General Charles Hitchcock Sherrill in a series of lectures, through WJZ. General Sherrill is a former minister to Argentine, a world traveller to whom a welcome is extended by every court in Europe, an authority on the Monroe Doctrine. 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