Radio mirror (Jan-Oct 1923)

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RADIO DIGEST March iy, 1923 FLEWELLING AWARDS (Continued from page 1.) $5.00 each were awarded to A. R. Miller, Jr., Spring Valley, Minn; Charles Priesmeyer, Chicago, 111.; E. C. Hebert, Detroit, Mich.; J. A. Harris, W. Lynn, Mass., and Thomas Dimply, Kansas City, Mo. Marked Ingenuity Shown Marked ingenuity and careful workmanship were found in practically every entry. Distance reception was one of the deciding factors which cost several excellent entries their places in the prize. High lights on the prize winners are interesting. Mr. Blakey, first prize winner, fulfilled every rule of the contest and .submitted a very neat and complete manuscript. His care in treating the subject and building the prize set were considered important factors by the judges in making the award. Mr. Hall, second prize winner, showed some unique ideas in construction, and even extended his paper to include the making of a two-step Radio frequency amplifier. Mr. Barclay, winner of third prize, took great care in preparing his description of his set, submitting excellent diagrams and photographs. Third Prize Set Next Week The third prize set, Mr. Miller's, will be described in the next issue of Radio Digest, that of March 24. The following week (April 7) the second prize set will be described, and in the April 14 issue, the complete description of the first prize set will appear. The descriptions will be very detailed so as to aid Flewelling fans in their experimental work. From the many excellent papers submitted in the contest, the judges selected seventeen for honorable mention. The contestants whose papers were worthy of honorable mention follows: E. C. Galbreath, Denver, Colo.; W. J. Pusey, Haskell, N. J.; H. C. Borgfeldt, "Wilmette, 111.; L. C. Fairfield, Winnipeg, Manitoba, Can.; E. E. Holmes, Los Angeles, Calif.; Harry Shiples, Salt Lake City, Utah; H. J. Perkins, Lake Worth, Fla.; E. E. Cook, Chicago, 111.; -Dr. B. F. Morrow, New York, N. T.; E. Schmidling, Milwaukee, Wis.; M. L. Healy, Boston, Mass.; J. B. Rathbun, Chicago, 111.; H. E. Dudrey, Ashland, Ky. ; Henry Burr, Kansas. City, Mo.; Theodore Madige, New York, N. Y.; J. F. Callahan, Brooklyn, N. Y. ; Geo. A. Remling, North Tarrytown, N. Y. LOGWOOD SPEAKS (Continued from page 1.) Radiophans that we will have to gather our future experts, and unless we gain their confidence, and help them to help themselves, the science will suffer in the next generation," emphasized Mr. Logwood. Raps Certain Firms He pointed out that as soon as any Radiophan has worked out a new circuit that showed promise of an improvement on the one in popular use, he was immediately requested to submit the plans to certain firms throughout the United States, with the promise of large returns if his circuit proved meritorious. As soon as one of the companies had secured the sole rights they immediately place it out of reach of all except the largest stations, and then at a great expense to the companies licensed to use it. Mr. Logwood, who is at present figured in an action against Major Armstrong regarding the priority of patenting the Armstrong circuit, is at the present time working on several new circuits with the interests of the small Radiophan at heart solely. Thinks Logwood Will Win "In my opinion it will not be very long before some action will be taken; perhaps it will be by the small fans themselves," declared Professor J. M. 'Buckley, of Manchester, England, who is on a tour of Canada and the United States to secure firsthand information on Radio and its application in North America. "I have studied the Armstrong circuit and am also fully acquainted with the claim of Mr. Logwood. In my opinion, Mr. Logwood will win his case, because the United States patent office has already allowed his claim of priority of application, as I understand it. I think that it will be one of the finest moves ever made for the science if Mr. Logwood succeeds, because he is a man, and associated with men, who are far from being purely mercenary. They have the true interests of the Radiophans at heart and with their guidance, that is of Mr. Logwood and his associates, the Radio world will make great advancement." NAA, Old Time Naval Plant, Responsible for Naming Town in Virginia "Radio" When NAA First Began Operation All Transmission Was Conducted from Hut Near By — Now Is Operated By Remote Control On Seven Separate Circuits By Carl H. Batman WASHINGTON — There is a town named Radio. It is in Virginia just across the Potomac from Washington. It is there that the gigantic towers of the Naval Radio station, from which the name came, is situated. Usually it is known as Arlington, being near the great National Cemetery, but the call letters of the station, NAA, are known almost around the world. In the Postal Guide, the tiny village at the foot of the three great towers, one of which is 600 feet high, is listed as Radio. This Naval Radio station was put in operation in 1912 and was the first of the Navy's chain of high-powered Radio stations to be established. It has only become well-known to American fans since the government broadcasting was transferred there in January, but today many thousands of Radio owners listen in on 710 meters when NAA speaks. Seven Sets Now in Use When the station was first put in operation only code signals were sent and received. Ten years ago, all operations were conducted on a single set from a little hut nearby under the direction of a superintendent of communications. Today it is different; seven separate transmitting circuits are operated by remote control from the naval and munitions buildings in Washington, from which wire lines link up with the Radio circuits for both army and naval use. All receiving is done in Washington by special antennae and loops. Simultaneous operation is permitted with six sending sets without interference, thanks to "duplex operation." Back in the early days, Chief J. W. Scanlin was listening in one night, on December 29, 1912, to be exact. He heard a curious series of numerals and letters forming words unintelligible to him. He had heard similar characters in code for several nights, but on the night mentioned he copied the message and told his superior officers in Washington that he had heard and copied "FL." He was laughed at. FL was the call of the Eiffel Tower in Paris, and no one believed he could pick up a message from that distant station. He insisted, however, and a report containing the copied message was transmitted to Paris through the Department of State. The reply proved that he was correct. He had copied Eiffel Tower, and correctly except for a few characters. For the first time, an American naval station had caught a European Radio station. Soon thereafter experiments were undertaken between NAA and the Eiffel Tower and direct two-way communication was established in 1913. Old Set Beaches Far With the old 100 kilowatt Fessenden spark set, put in operation in 1913, some remarkably long distance results were achieved. Naval vessels in the Mediterranean have copied the tivne signals, which are still sent out from NAA on this set, after 19 years of service. An amateur in Brazil heard NAA as long ago as 1914, but this is not uncommon today. Some of the first Radiophone experiments were conducted from Arlington in 1915 when the announcements were received in Pearl Harbor, Honolulu. CONTENTS Radio Digest, Illustrated, Volume 4, Number 10, published Chicago. Illinois, March 17, 1923. Published weekly by Radio Digest Publishing Company. 123 West Madison Street, Chicago, Illinois. Subscription rates, yearly. Five Dollars; Foreign, Six Dollars; 6ingle copies. Ten Cents. Entered as second-class matter April 27, 1922, at the postofflce at Chicago, Illinois, under the Act of March 3, 1879. "All the Live News of Radio" 1 to 6 You've Heard 'Em? Here They Are, A Continuation of the Announcer Series 5 Receiving Records Contest 6 The "How" of the Simplified Circuit, Part VII, by E. T. Flewelling 7 Radiophone Broadcasting Stations, Part II 8 R. D. Diagram 76; Book Reviews 9 Editorials; Condensed by Dielectric; Indi-Gest, Humor Column ,. 10 A-B-C Lessons for Beginners, Chapter XI — The Vacuum Tube as an Amplifier — By A. 'G, Mohaupt 11 Tapped Coil and Variometer Circuit; One Knob Control for Tuning a Set 12 How to Wind Your Own Reinartz Coils, by H. J. Marx 13 Single Tube Reflex Circuit; About Radio Parts, the Antenna 14 Questions and Answers IS Radio Illustrated, a Page of Pictures IS Looking Ahead Reflex, Reinartz, and Flewelling, featured every issue. Watch for the new developments in these circuits through the columns of Radio Digest. Third Prize Flewelling Set, designed by A. J. Barclay of Tampa, Florida, will be described in full by the winner himself in the next issue of thte Radio Digest. The second and first prize sets will be described in the April 7 and 1 4 issues respectively. » A New Development in Reinartz Sets, will be the next subject discussed by H. J. Marx. It's good. Don't miss it! A-B-C Lessons for Biginners, Chapter Twelve next week will take up a twostage audio frequency amplifier, as well as a detector employing regenerative amplification. Read A. G. Mohaupt's Chapter Eleven on page 1 I, this issue and fall in line with the other beginners. The Only Sure-Fire Radiophonists' Telephone Book, Part III with State, CityStation index. Watch for the new feature which will give daily schedules of the high power broadcasting plants. Last But Not Least, E. T. Flewelling, will tell some more interesting details regarding the experimental work he is doing. Read this too in the March I 7 Radio Digest. TORONTO COPS PLAN BROADCAST STATION TO BE ONE OF THE MOST POWERFUL IN WORLD Other Canadian Forces Intend to Follow In Footsteps of Chief Dickson Health Board Uses Broadcast March 15 to March 22 was Diphtheria Week in Philadelphia. Then Philadelphi;.ns heard all the Board of Health knows about diphtheria "vaccination" cure and treatment. They had the news broadcast to them over the Radio as well as delivi id to them by regular pre-Radio day channels, Reports show that there are about six hundred incorporated manufacturers of Rarlio apparatus in the United States. Newsstands Don't Always Have One Left WHEN YOU WANT Radio Digest YOU WANT IT! BE SURE OF YOUR WEEKLY COPY BY SUBSCRIBING NOW SEND IN THE BLANK TODAY Publisher, 123 West Madison St., Chicago, Illinois. Please find enclosed cheek M. 0. for Five Dollars (Six, Foreign) for One Year's Subscription to Radio Digest, Illustrated. Name Address City State , TORONTO, ONT. — One of the most powerful Radio broadcasting plants and longdistance receiving stations in the world is to be installed at the police headquarters in Toronto, Canada, within the next few months if present plans of the police commissioners materialize. In a special interview to a representative of the Digest, Chief Dickson said that before long the department will enter into negotiations, and it is expected that the plant will be in operation before the fall of the present year. To Keep abreast of Times "We must keep abreast of the times," declared Chief Dickson, "and I have had my ear to the ground regarding Radio for many months. I fully realize that Radio is the coming science that is going to revolutionize police methods, and the world generally, but it should be remembered that there will have to be the necessary government restrictions so that the work of the police and other departments for the protection of the public cannot in any way be interfered with. Tes, the possibilities of the new science are great, especially in the prevention of crime and the detection of criminals. Canada is especially suitable for high powered stations for police work, chiefly because it is a country of long distances and few large police centers. Then again there are many outlying districts that have not yet been equipped with telephones. These centers can now be equipped with high powered Radio stations at small expense, and in this way help in watching for the safety of the public. Awaits Improvements Chief Dickson is opposed to the immediate installation of a broadcasting station because he felt that there might be some radical improvements m apparatus very shortly, which might make necessary the scrapping of any equipment bought now. For this reason a "watchful waiting" policy will be adopted for a few weeks. Chief Dickson pointed out that the head of the United States secret service, W. J. Burns, has his own broadcasting station, as have also the chiefs of police of New York, Detroit and other large centers throughout the United States. Almost every Radiophan is acquainted with the Detroit police's appropriate Radio call letters, "KOP." Three Centers with Plants Communication has been going on with Chief Dickson and the chiefs at Montreal and Ottawa with regard to the opening of a station by the chief in each of these three centers, and it is now reported that all three have definitely decided on the same policy as that of Chief Dickson's. So, when some definite decision is reached, all three centers will have high powered stations, but it is understood that the one to be installed at Toronto will be one of. the most powerful in the world in order to be of the greatest service for points throughout Western Canada and also, at the same time, be in touch with all stations in Europe. The chief stated that he had gone-into the matter of cost and other details in connection with the installation and the operation. He has, we understand, full knowledge of the whole situation, and is in a position to take prompt action when it is considered opportune to act. NOVEL FAMILY UNION FOLLOWS KYW SONG Telegraph Operator Sings for Broadcast — Finds New Cousin CHICAGO. — On January 8, Frank D. Greif, 2713 Florence avenue, who is a telegraph operator and sings as an avocation, sung over the Radio in the Westinghouse KYW program. Siting at his Radio set in Binghamton, N. Y., George F. Greif, an electrical engineer, heard the song, and the name of the singer. George F. Greif, reversing the idea that "you may forget the singer but you can't forget the song," wondered if the singer were a relative, as the name is not a common one. He wrote the Chicago singer and a checkup of their relatives disclosed that they were first cousins, having the same grandfather, Frederick Joseph Greif, born in Germany. Frank D. Greif, having lost his father when a child, did not know a great deal about his grandparents, but the mother of George, living in Lakeland, Fla., furnished the information that disclosed the young men their consanguinity.