Radio mirror (Jan-Oct 1923)

RADIO DIG JSTRATED ACT ON NEW RADIO LAW| lontinued from page 1) Thorn, American Railway Association: Mr. Maximum and others all appeared in favor of the bill. Several of them, however, offered minor amendments. It is believed that the bill will have speedy and favorably action by the House of Representatives when reported by the merchant marine committee. •Will Be New Year's Gift Literally, the final passage of the a\ hue bill, seeking to re-allocate Radio waves, minimize interference and provide for the adequate regulation of national Radio transmission, will be a New Year's gift to practically every amateur in the country and to every Radiophan. To be sure, its benefits will not be realized at once, but they will last for years to come. The bills presented in both the Senate and House last June, lay dormant at the Capitol until Secretary Hoover returned from a protracted trip to the West Coast where he was busy with another national project. Immediately upon his return, he took up the question of the desired Radio legislation with Representative W. H. White Jr., of Maine, the House champion of Radio, with the result that it was announced that hearings would be started before the House Merchant Marine and Fisheries Committee on Tuesday, January 2. " TO FIGHT R.C.A. TO END (Continued from page 1) pose of discussing further organization. Ten licensees were present and all subscribed to support A. H. Grebe in the Radio Corporation of America monopoly suit. The spirit of the meeting was indi' cative of a high morale, and while it could not be definitely ascertained, it is said that two important legal points, sufficient to block the patent monopoly efforts of the Radio Corporation, were disclosed. The officials of the organization are: A. H. Grebe of the A. H. Grebe Company, president; Edward Weston of the Radio "t Company, vice president; Fulton Cut : of Cutting & Washington, treasurer; ncis P. Pace, lawyer, secretary. Se Forest Corrects Rumor ■r Lee De Forest and Charles Gilbert, sident of the De Forest Radio Telephone Telegraph Company, are righteously ered at recent misstatements regarding De Forest patents. In order to have public understand the truth an inter vith the two obtained the following ement: humors have been circulated throughout trade.. id statements "iave been pub jd that the Radio Corporation of Amer or the American Telephone and Tele )h Companv, or both, are the owners of he De Forest patents. In the interest of airness and to prevent those unfamiliar x-ith patent matters from being imposed lpon or being misled by misrepresented 'acts we wish to advise that the De Forest jompany is, and at all times has been, the >wner of the De Forest patents, and any statements to the contrary by anyone are mtrue. ... = "The Radio Corporation of American and ts associated companies are operating un ler a license acquired from the DeForest company through the A. T. & T. Company md the Western Electric Company who are licensees under the De Forest patents. This icense which the De Forest company ^ranted is open to public inspection, and Ts recorded in the TJ. S. Patent Office. "Nevertheless, pursuant to its attitude ind policy of fairness, it cannot permit a misrepresentation of facts to accomplish what can be accomplished by fair legal methods. The apparatus manufactured and sold by the De Forest company is free from infringement of any existing valid patent of the United States owned by anyone other than the De Forest company, and frees the purchaser of such apparatus from any liti gation." NEW OPERAS ON AIR (Continued from page 1) included the familiar array of former seasons; Mines. Galli-Curci, Claessens, Messrs. Schipa, Rimini, Lazzari and Trevisan. Cimini conducted. "Samson and Delilah" was interesting from the standpoint of debuts, as Louise Homer as Delilah and Charles Marshall as Samson were heard for the first time n these roles with the Chicago Opera. Polacco conducted. FLEWELLING PRIZE CONTEST RULES 1. Contest is open to all Radiophans, whether or not they are subscribers to Radio Digest. Illustrated. The contest is open now and will close January 27 at midnight. Awards will be announced in the February 24 issue of this publication. 2. The object is to locate and award prizes on a competitive basis for the best Flewelling circuit receiving set entered. 3. Prizes are: First, $25.00; Second, $15.00; Third. $10.00; Fourth to Eighth (five prizes) inclusive, $5.00 each. 4. In event of a tie, equal prizes will be awarded both contestants. 5. Judges will be the Technical Staff of Radio Digest, Illustrated. 6 To enter the contest send working drawings and diagrams together with an. article of hom 1,500 to 2,500 words in length describing the making and operation ot an actual Flewelling circuit receiving set. The contestant must build this set and test it before entering the contest. The article must tell: (a) how to make the set, (b) how to operate it, (c) helpful suggestions for getting maximum results, (d) actual airline broadcasting station receiving range using only one tube, first employing only an indoor aerial but no ground, second, using a ground but no aerial, and third, if available, using only a loop aerial. Other combinations and notations on the antenna system used will be considered in the award of prizes. 7 In sending material for consideration in the contest, exclusive publication rights are automatically given to Radio Digest, Illustrated. All articles published, but not awarded prizes, will be paid for at regular space rates. Unused manuscripts will be returned to contestants. 8 In deciding the winners of the contest the judges reserve the right to call for any set entered to be sent in for examination and test. Tubes. A and B batteries and phones will not be required in sets sent in for testing. 9. Manuscripts will be judged from the standpoints of neatness, clarity of expression," completeness, and actual tried success of the set described. 10 Originality in the use of various parts of apparatus other than shown by; Radio' Digest in the Flewelling circuit heretofore, is encouraged and even recommended See Rule 6, however, for method to be used in determining the range. NEW YORK'S SHOW DRAWS BIG CROWD MANY ATTRACTED BY ENTERTAINMENT FEATURES David W. Griffith, Wm. J. Burns, Chaun cey Depew and E. H. Armstrong Keep Interest Alive Seven New 360-Meter Plants CHICAGO. — Seven new plants managed to <*et the date 1922 on their 360-meter broadcasting licenses by obtaining their licenses during the last week of December. Station WCAE, Pittsburgh, Pa., was also granted a Class B license, carrying with it the use of a 400-meter wave length. The new plants on 360 meters are: WRAM, R. E. Compton and Carthage College, Carthage, 111.; WQAC, E. B. Gish, Amarillo, Tex.; WPAW, Radio Installation Co., Wilmington, Del.; KFCM, Richmond Radio Shop, Richmond, Calif.; WPAX, S — W Radio Co., J. R. Shumate, Jr., Thomasville, Ga. ; WPAV, Paul Tinetti & Sons, Laurium, Mich.; KFAZ, C. H. Weatherell, Reedley, Calif. The Government station at Estevan Canada, reeentlj' established communication with Raratonga, New Zealand, 6,500 miles distant. CONTENTS Radio Digest. Illustrated, Volume i. Number 1, publisked Chicago, Illinois. January 13, 1923. Published weekly by Badio Digest Publishing Company, 123 West Madison Street, Chicago, Illinois. Subscription rates. Yearly Five Dollars; Foreign, Six Dollars; single copies, Ten Cents. Entered as 6econd-class matter April 27, 19->-> at the postoffice at Chicago, Illinois, under the Act of March 3. 1879. "All the Live News of Radio" 1 to 6 Flewelling Prize Contest Rules , /. , 2 How They Do It at WDAP'S Plant 5 Receiving Records Contest 6 The Reinartz Set in Photo Diagram 7 Radiophone Broadcasting Station Directory, Part II, Station Schedules from WAAX to WLAR 8 Editorials; Condensed by Dielectric; Indigest, Humor Column , 10 A-B-C Lessons for Radio Beginners, Chapter II, by Arthur G. Mohaupt 11 Panel Shield Prevents Body Capacity; Ten Variations in Grid Leak Increase Signals; Six Workshop Kinks 12 How to Make and Operate the Reinartz Receiver, an Explanation of the Photo Diagram Shown on Page Seven, by H. J. Marx 13 Radio Digest Standard Conventions; The Reader's View 14 Questions and Answers IS Radio Illustrated, a Page of Pictures 16 Looking Ahead NEW TORE. — Closing with exhibitors leaving late Saturday niight, December 30, the American Radio Exposition at Grand Central Palace here broke all previous records for previous Radio shows. The great crowds, growing every day of the ten days, were literally jammed about the booths and entertainment features on the last night. One feature which held the interest of all was the standard 500-watt broadcasting station which was located on the main floor. Hundreds of well-known persons were accorded the honor of broadcasting from the show's station. Show Program Excellent The excellent character of the program arranged for the show undoubtedly caused many persons to attend who might not have done so otherwise. The entertainment was not confined to Radio, but included motion pictures, crime detection and other distinct fields in its scope. On the day following Christmas, Richard Barthelmess was awarded a photoplay medal for his acting in "Tol'able David." Later during the same evening, David Wark Griffith broadcast from the show's station on the subject, "The Type That Need Apply." His talk described the best type of person adaptable to a motion picture career. "William J. Burns Talks On Wednesday night, December 27, William X Burns told the crowd attending how Radio was being used in the detection and capture of criminals. On the same evening Julius Tanner, vaudeville star, and "Uncle Dave" Cory, famed writer of children's stories, contributed to the show's popularity. On the next night Chauncey Depew attempted to break some broadcasting records. A great many years ago when the wired telegraph first reached around the world, Mr. Depew gave an exhibition of fast sending and his message circled the globe in twenty-eight seconds. Then Thomas A. Edison cut two seconds from Mr. Depew's time. When the^. new mark was recorded Mr. Depew contended he was the best amateur, as the great inventor was a professional. "The Major" Shows 'Em How One of the daily features of the exposition was a demonstration of Radio receiving by Major Edwin H. Armstrong, under the auspices of the Radio Club of America. Special apparatus using °-9 vacuum tubes was constructed and u? . for this purpose and an extraordinary system of amplification was used so that the receiving programs could be heard distinctly and clearly by the crowd. Armstrong worked at the show in a special glass enclosed room on the mezzanine floor. Radio Comes to Rescue of Lonely, Historic Island More About Reflex Circuits, is a feature by Harry J. Marx in the next issue, January 20, of Radio Digest. Mr. Marx has uncovered some interesting new data regarding these "trick" circuits, and will show and tell about three more hook-ups for the home experimenter to try out. Making one tube "work overtime" is always an interesting subject. Buy the next issue and learn more about this type of receiving circuit. A-B-C Lessons for Radio Beginners, Chapter III, will appear in next issue. The "green", novice should not miss any of these simple explanatory articles by Arthur G. Mohaupt. His next chapter will take up the subject of oscillating circuits and the high frequency currents established in them. As these form the real basis of Radio operation, no novice should miss the next chapter. Radio Receiving Sets in Photo Diagram, one of the popular original features of the Digest, will illustrate the new Federal Radio frequency receiving set. This will appear in the January 20 issue. Place your order with the newsstand dealer today. The Effect of Religious Broadcasting, is the subject of an article by Vera Brady Shipman to appear in an early number of the Digest. Will Radio aid in the propagation of Christianity? Does the broadcasting of various denominations* services have a unifying effect? See what this interesting article discloses. The State, City Station Index, to the Radiophone Broadcasting Station Directory, together with the third and last part of the station schedules, will appear in the Digest. Imitation is the sincerest form of flattery. This service is original with Radio Digest, and is the best directory of such stations that anyone can secure. Radio Takes Role as Show Booster SYDNEY, AUSTRALIA. — Radio has come to the rescue of lonely Polynesian Pitcairn Island, which loomed large in fiction and history as the refuge of the mutineers of the British sloop Bounty, years ago. Until now the 200 islanders have been compelled to depend for their news of the outside world upon the occasional visits of ships. Radio equipment has just been | installed, however, and will do much to '-"-e the isolation of the island resi! ,0m%eLttarTnn/theenin0ternae-|BE SURE OF YOUR WEEKLY COPY ie. I BY SUBSCRIBING NOW Newsstands Don't Always Have One Left SEND IN THE BLANK TODAY WHEN YOU WANT Radio Digest YOU WANT IT! Publisher, 4-1 Radio Digest. Illustrated, 123 West Madison St., Chicago, Illinois. Please find enclosed check M. 0. for Five Dollars (Six. Foreign) for One Year's Subscription to Radio Digest, Illustrated. Name Address City State _ Broadcasts Effective in Calling Wide Public Attention to Los Angeles Pageant of Progress LOS ANGELES, CALIF.— Radio was recently presented to the world in the role of "A Messenger," by the Los Angeles Chamber of Commerce, when they decided to broadcast information concerning the Pageant of Progress and Industrial Exposition, which they were to present to Southern California and the world. For several weeks before the opening and during the two weeks of the Exposition which was held a short time ago, Stations KHJ, the Los Angeles Times; KOG, the Evening Herald, and KWH, the Los Angeles Examiner, included Pageant of Progress news, information and programs in the broadcasting of their news bulletins. This was the first time that Radio has been brought into play in connection with an exposition of any kind on the Pacific Coast, and in which the information was broadcast by the newspaper stations. The news matter, broadcast from an educational standpoint, proved from late reports to have been more than the success expected. An experimental twenty kilowatt vacuum tube at Rocky Point, Long Island, transmitting on a wave length, of 19,000 meters, recently handled commercial transAtlantic Radio traffic with Great Britain and Germany. ure or piece ■ class in a d to its alma i eiving outfit.