Radio Digest (Oct 1923-July 1924)

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January 19, 192U RADIO DIGEST — Illustrated DOCTORS OF NATION TO DISCUSS RADIO DATA TO SHOW ITS VALUE AS HEALTH GUARDIAN Secretary of American Medical Association to Cite Growing Use of Airphone CHICAGO. — There will be only a handful of delegates to the annual session, March 5-7 in Chicago, of the council on medical education and hospitals, American Medical association, the most powerful organization of its kind, but in their minds and hearts will rest, it is said, the physical and mental welfare of more than 100,000,000 persons in the United States excluding its possessions. As one of the most important means toward protecting or conserving the health of the people Radio will be considered by the greatest experts in the medical profession. For on the standards or practices approved by the 400 or 500 delegates, representatives of the 80,000 or more physicians in this country who are members of the association, on the deliberations of a concomitant body — the Federation of State Medical Boards of the United States — on the co-operation of the American Public Health association, numbering more than 3,000 health officers, and on that of the United States Public Health service, depend the lives not only of millions of men, women and children now under the flag but of their posterity. More than 12,000 doctors are expected to attend the annual congress of the American Medical association in Chicago, June 9-13, inclusively. Executive Praises Radio In his report to the medical congress Dr. John M. Dodson of Chicago, secretary of the bureau of health and public instruction, American Medical association, will praise, he said recently, the use of Radio as a national agency for the welfare of the people. "The use of Radio to educate the public, to warn and guide it in relation to health or hygiene, is now of vast importance," he declared. "Many cities have already officially employed Radio in relation to the public health. The various states, especially New York and Pennsylvania, have adopted like measures, as has the United States Public Health service. "Pittsburgh and Philadelphia are pioneers in the dissemination of health news. New York, Boston, Chicago and New Orleans are among the foremost municipalities who use Radio to protect their inhabitants. At least six more cities are considering the official employment of Radio as physician and health officer." Dr. Dodson said that he had been authorized by the American Medical association to investigate and to report his conclusions as to the use of Radio in relation to the public health. "It is considered likely," he concluded, "that in the near future 10 or 12 broadcasting stations spanning the United States will diffuse advice as to how to keep well in the mass. Radio is recognized by public health experts as extremely valuable in the spread of information concerning smallpox, diphtheria, scarlet fever, infant welfare, prenatal care of mothers, industrial medicine and like topics." Public Officials Favor Radio The American Public Health association, headquarters New York City, of which Dr. H. M. Calver is secretary, is investigating, according to Dr. W. H. Lipman of Chicago, chairman of the association's committee on food and public health, the expansion of the application of Radio. The committee in charge of this work is that on public health and publicity of which Dr. H. E. Kleinschmidt of Toledo, O., is chairman. Dr. William D. Owen of Chicago, until a, few months ago president of the National Education association, which numbers more than 140,000 educators, will address the coming medical congress on the great value of Radio as a public health instructor. NAA BROADCASTS ADS; TUNE IN AND GET JOB WASHINGTON. — The Government is advertising by Radio! But, although direct Radio advertising is banned, the results achieved indicate that the public is benefited. Every Wednesday night, Mr. Morgan of the Civil Service Commission broadcasts from NAA, Arlington, openings in government positions and announces examinations to be held for every kind of a job. Some replies indicate direct results. CYL TELLS MEXICO'S TROUBLES TO FANS MEXICO CITY.— Station CYL here has been broadcasting to the world war bulletins during the recent crisis, telling the latest moves in the situation. Colonel Ferdinand -Ramirez, chief of the Government Radio Service and member of the American Radio Relay League, is in charge of the war communiques, which were being broadcast on Monday, Tuesday and Friday nights, on 500 meters at 9:00 p. m., Central time. IT'S EASY TO PUT UP AN AERIAL e * ' The modern grirl is very much of a Radiophan, even to the point of erecting her own aerial. Few realize that there are about as many girl fans as there are boys, and that many of them build their own sets and put up their own aerials. This photo shows Miss Catherine Moore, who is quite well known amongst the Radio fraternity, at work on the aerial on top of her New York home. K. & H. Photo Canaries Sing at WTAM CLEVELAND. — Radiophans who picked up WTAM recently heard the birdies sing even though it was a dark and stormy night. Eight little yellow Rollers each took a turn before the microphone and "strutted their stuff." The birds were furnished by exhibitors at the International Roller Canary Show, held here. All were prize winners in some branch of Roller Canary-ing. TWO FIRMS CLAIM SECRET BROADCAST AIRPHONE NEWS PRINTER ENDS GENIUS' SEARCH Concerns in Chicago and New York Declare They Send Four Messages at Once CHICAGO. — Ever since communication by Radio became practicable the world's greatest inventive geniuses, including Marconi, have striven for secrecy in transmission but not until recently, according to the International News Service of New York City and the Morkrum company of Chicago, has this been achieved. These concerns lay claim not only to secrecy in but quadruplication of transmission. Radio engineers in the employ of the International News, including W. G. H. Finch, aged 28 years, formerly of Birmingham, England, Lieutenant Commander A. M. Stevens, aged 39 years, who constructed and installed the Lafayette Radio station at Bordeaux, France, during the war, and William A. Bruno, have perfected what they call the high speed automatic Radio printer system which enables the simultaneous transmission, they assert, of four different messages or news "stories" to four separate automatic typewriters in as many receiving stations, that is, newspaper offices. The typing machines are operated, it is said, by the same impulse which carries the signals. Electric Engineers See Test Demonstrations along similar lines were made recently in Chicago by the Morkrum company before 300 delegates to the annual convention of the Association of Railway Electric Engineers. Secrecy in transmission is effected, according to the International News, by the use of signals which are receivable only by like typewriting mechanisms adjusted in a manner similar to the sending apparatus. Adjustment of the devices used in the transmission and reception of news reports may be changed daily if necessary to insure secrecy. The device of the Morkrum company was invented by Francis F. Dunmore, staff engineer of the United States bureau of standards, "Washington, D. C. It is applicable to the standard land-line printing telegraph machine now a part of many daily newspaper plants. The instrument relays the Radio impulses of an especial land-line telegraph code which signals are recorded by the automatic printer or typer. The Dunmore contrivance, it is said, also responds to variations in the volume of sound, that is, to different tones. This prevents, it is asserted, interference by sending stations with corresponding wave lengths. Secret transmission is effected by the Dunmore device, it is said, by adjusting the sending keyboard so that opposite or erroneous relationships are obtained with the broadcasting pulsator. Slay Serve Small Dailies Recent tests of the International News' apparatus and that of the Morkrum concern showed, it was declared, that it will be possible soon for small daily newspapers to receive extensive news reports at a very low cost. The Associated Press recently transmitted news reports by means of the Dunmore machine from Chicago to Milwaukee. The International News report was recently sent as a test by Radio from its offices in New York City to Tarrytown, New York. 8,800 Receivers on Job in Rio Janeiro District RIO DE JANEIRO. — Operating in the federal district of Rio de Janeiro, Brazil, there are about S.800 receiving sets. Broadcasting of music and entertainment is taking place regularly from the Government station at Praia Vermelha and the Radio Sociedade de Rio de Janeiro. A line is being put up to connect the former station with the Instituto de Musica to permit the broadcasting of concerts. THE ANTENNA BROTHERS Spir L. and Lew P. When Is a Catalogue? X~^~ > hey! wadda ]w. /YE MEAtfTROWIN JUNK IN THU j STREET THftT\0A>1