RADIO SERVICE BULLETIN
INDEX OF REGULATIONS AND MISCELLANEOUS ARTICLES APPEARING IN THE RADIO SERVICE BULLETIN, YEARS 1920 TO 1931
Subject Month Year
Abbreviations: New international______.______September__ 1920 Accounts: Instrirctionsfor handling traffic______June______1922 International radio accounting section transferred from Navy Department to August______1924 Department of Commerce . Aeronautical (aircraft) : Operator and station licenses ------June______1930 Air-line distances: Tableof,between 15cities inUnited States------March______1928 Amateur stations and operators: War-time restrictions on amateur operatorsand amateur stations removed------October_____ 1919 Regulations regarding licensed transmitters must be inductivelycoupled------do------1919 Regulations 3 and 4, act of Aug. 13, 1912, must be observed------_____do______1919 Message from Hartford to Washington direct on 200 meters______February___ 1920 Stations may operate pending action upon application for licenses______May______1920 Restrictions on special stations-stations not capable of adjustment on 200-meter April______1921 wave . Use of 175, 200 or 225 meters proposed for amateur broadcasting______February___ 1922 American radio relay league trans-Atlantic tests of 1922------October_____ 1922 New station regulations______.______July______1923 Allowed to use short waves______August______1924 New regulations______January_____ 1925 Restricted in communication with commercial and government stations______February___ 1925 Picture apparatus authorized for use by amateurs ------June______1925 Allowed to use radiotelephone equipment ------December___ 1925 List of Cuban experimental stations______October_____ 1927 Licensing and operation of amateur stations------January_____ 1928 Revised station regulations______-______March______1928 Do______.______September__ 1928 Do______.____ December___ 1928 List of Cuban stations______-______-______August______1929 Revised station regulations______January_____ 1930 Revised stationregulations, General Order No .84,Apr. 4,1930------ApriL------1930 Apparatus: List of vessels on Great Lakes equip~ed with vacuum-tube receivers______-----do---- 1924 Investigation of interference caused ?Via Cottrell electric precipitator------June______1924 Investigation of power-line interference______:______do______1924 Radio Interference from electrical precipitators------___ August______1924 Interference from harmonics______.___ December___ 1924 Increase power for broadcasting stations______do______1924 Testing and adjusting piezo oscillators by Bureau of Standards______January_____ 1928 Do______February___ 1928 Do______September__ 1928 Do______-______-____-______January_____ 1930 Broadcasting stations : Must not accept public messages from other stations-3B0 meters authorized _____do_____ 1922 concerts, etc.; 485 meters for crop and weather reports. Commercial second-class operator's license or higher required for operation______-----do----- 1922 List of United States broadcasting stations______ApriL_-____ 1922 Regulations pertaining to the broadcasting of weather, crop, and market infor- May______1922 mation. List of United States broadcasting stations ------tpriL______- 1922 Do______May______1922 Do______July------1922 Class B (400-meter wave) established, Regulations 57, Radio Laws and Regula- September__ 1922 tions, edition Aug. 15, 1919 amended. Class B regulations amended______October_____ 1922 Operators of broadcasting stations cautioned regarding violation of sec. 2, act of January_____ 1923 Aug. 13, 1912. List of United States broadcasting stations______April______1923 Test perinds limited, class B regulations, class O (380 meters), established, eta___ May______1923 Developmentregulations______do______1923 List of United States broadcasting stations ------t------February___ 1924 New York conference recommends discontinuance of 450 meters by ships______do______1924 New York conference on radiating receiving sets______do______1924 List of British broadcasting stations______March______1924 List of French broadcasting stations ------do----- 1924 List of Cuban broadcasting stations ------do----- 1924 List of United States broadcasting stations ------do---- 1924 List of Canadian broadcasting stations ------_ May______1924 List of Mexican broadcasting stations ------do----- 1924 List of Argentine broadcasting stations______July______1924 List of foreign broadcasting stations______November__ 1924 Interference from harmonics______December___ 1924 Increased power______do______1924 List of United States broadcasting stations ------February___ 1925 Do______.______do______1925 Do______.______-______June ------1925 Do______-______September__ 1925 List of foreign broadcasting stations______1925 List of United States stations equipped so as to suppress harmonics------November__ 1925 Additional list of United States stations equipped so as to suppress harmonics___ December___ 1925 List of United States broadcasting stations______January_____ 1928 RADIO SERVICE BULLETIN 21
INDEX OF REGULATIONS AND MISCELLANEOUS ARTICLES APPEARING IN THE RADIO SERVICE BULLETIN, YEARS 1920 TO 1931-continued
Subject Month Year
Broadcasting stations-Continued . Additional list of United States broadcasting stations equipped so as to suppress January_____ 1926 harmonics. List of Canadian, Cuban, and Mexican broadcasting stations in order of fre- February___ 1928 quency . Broadcasting (low and high frequency) stations: List of broadcasting stations in vicinity of Chicago equipped with piezo crystal -----do------1926 oscillators. Additional list of broadcasting stations in vicinity of Chicago equipped with March______1926 iezo crystal oscillators. List of foreign broadcasting stations ------July______1926 List of broadcasting stations in Great Britain and Northern Ireland------November__ 1926 List of United States broadcasting stations ------December___ 1926 List of European broadcasting stations ------______.__ do______1926 List of Canadian, Mexican Cuban, and Haitian stations______January1927 List of United States broadcasting stations issued temporary permits------April______1927 List of United States broadcasting stations effective June 15, 1927______May______1927 List of Canadian stations______.______July______1927 List of United States relay broadcasting stations ------September__ 1927 List of Cuban broadcasting and experimental stations ------October_____ 1927 List of United States broadcasting stations ------January_____ 1928 Do______February ._ . 1928 List of broadcasting stations using 200 watts or more in Eastern Hemisphere____ -____do__.___ 1928 Central and South American broadcasting stations using 500 watts______-----do------1928 List of Mexican broadcasting stations------March______1928 List of foreign short-wave stations ------April______1928 Broadcasting stations (all classes) : List of Canadian stations______August______1928 List of principal broadcasting stations of the world arranged in order of wave -----do------1928 length . List of foreign broadcasting stations______January_____ 1929 List of United States broadcasting stations------._ ._ February___ 1929 List of Mexican stations______------March______1929 List of Cuban stations-______..____.______._____ do______1929 List of United States relay broadcasting stations ------April______1929 List of United States visual (television) stations------_____do______1929 Prague broadcasting frequency plan______May______1929 List of Cuban stations______._ .______._ August______1929 Prague broadcasting frequency plan revised------_____do______1929 List of Canadian broadcasting stations______September__ 1929 Do______:______. November__ 1930 List of Mexican broadcasting stations______do______1930 Do______:_____ .______January_____ 1931 List of Cuban broadcasting stations ------March______1931 Call signals: Vessels assigned two (commercial and government) calls temporarily as pub- September__ 1919 lished . Application for, should be made to collectors of customs and radio inspectors in April______1920 ' field and not direct to this office. Assignment of, not authority for operation of station______-----do------1920 Should not be applied for prior to time application is made for official number ___ May______1920 Canada : War-time restrictions removed July 24,1919------October_____ 1919 Wavelength of compass stations changed------August______1920 Regulations for Canadian compass stations------do______1920 Use of 300 and 450 meters restricted ------October_____ 1925 Civil service examination: Radio inspector examination______January_____ 1923 Do______May______1928 Do______.______.______November__ 1928 Do______-______.____ July______1929 Do______-______. September__ 1929 Do______.______-_____ .______December___ 1930 Commercial stations Executive Order No. 3228, Feb. 13, 1920, returning to owners those taken during March______1920 World War by United States Navy under Executive orders Apr. 16 and Apr. 30, 1917. List of those reopened after World War------AprIL------1920 Compass stations and regulations thereto: Effective Jan. 1, 1920, 800 meters only to be used by United States naval stations . October_____ 1919 Order allowing only 800 meters extended until April, 1920; additional frequency December___ 1919 of 600 meters allowed. 800 meters not to be used for other purposes and procedure for obtaining bearings_ May______1920 List of United States on western Atlantic Ocean______June______1920 Wavelength of Canadian stations changed______August------1920 Do______.__.______do______1920 Regulations for United Kingdom stations ------do------1920 Regulations for French stations ------_____do______1920 Regulations for Italian stations------_____do______1920 Error in bearings______October_____ 1921 Simple-type direction finder for shipboard______do____.__ 1921 Article in Radio Service Bulletin for November, 1921, amplified___ December___ 1921 ` - 22 _ RADIO SERVICE BULLETIN
INDEX OF REGULATIONS AND MISCELLANEOUS ARTICLES APPEARING IN THE RADIO .r. :,' . SERVICE BULLETIN, YEARS '1920 TO 1931-continued
Subject Month Year
Conferences and conventions: China and Venezuela adhere to International Radio Convention, 1912______December___ 1920 Paris Technical Conference ------.------November__ 1921 First United States National Radio Conference______March___=__ 1922 Report of first United States National Radio Conference______May______1922 Report of second United States National Radio Conference______April______1923 Use of kilocycles in radio-introduced at second National Radio Conference_____ August______1923 New York Conference recommends discontinuance of 450 meters and addition of February___ 1924 706 meters for ships. ' New York Conference on radiating receiving sets------_____do______1924 Third National Radio Conference called______September__ 1924 Interference from harmonics (third National Radio Conference)______December___ 1924 Increase power for broadcasting stations (third National Radio Conference)______do______1924 Excerpts from proceedings of the fourth National Radio Conference______: February___ 1926 Finland and French Guiana adhere to International Radio Conference______April______1927 Cross index of article numbers of theInternational Radio Telegraph Convention_ August______1928 Designating letters: To be used for designating company controlling station______January_____ 1921 Letter "F" assigned to Federal Telegraph Co______do______1921 Distress calls: Vessels should annul such calls when assistance is no longer needed______do______1920 How to send for Coast Guard vessels______do______1923 British departments will notrender assistance to vessels sendingprivatemessages_ July______1929 Equipment: Improper use of storage battery______September__ 1920 Ships carry spare parts, par. 9, Laws and Regulations, edition Aug. 15, 1919, October_____ 1920 amended. Executive orders : Executive Order No . 3228, Feb. 13 1920, returning to owners March______1920 stations taken by United States Navy during World Warunder Executive orders of Apr. 6 and Apr. 30, 1917. Experimental stations : Using 300 and 600 meters for purposes other than allowed under pars. 42 and 44, December___ 1921 Aug. 15, 1919, edition, Radio Laws and Regulations. List of Cuban______October_____ 1927 Do______August______1929 Federal Radio Commission: General orders-see under. Act continuing for 1 year------A rIL______- 1928 Do______arch______1929 Index of General Orders up to No . 83, January, 1930------____ January___ 1930 Field service: Eighth district headquarters transferred from Cleveland to . Detroit------October_____ 1919 June______1920 Savannah, fourth district closed, work performed by Baltimore (third district)_ -----do----- 1920 List of radio districts______February___ 1928 Office opened in Buffalo, N. Y______Ap ill______1928 Alabama transferred to fourth district______1928 List of radio districts______-______-___--______do______1929 Dallas (Tex.) and Denver (Colo.) offices opened______November__ 1929 Portland (Oreg.) office opened______August______1930 Foreign country regulations: Sweden-foreign ships prohibited from transmitting import______:______November__ 1922 Ecuadorian decree regarding installations______February___ 1924 Use of radio in British harbors by foreign naval stations______March______1924 British wireless act------April______1924 British radio regulations______-______-______do______1924 Use of radio by foreign war vessels in South African waters______November__ 1924 Use of radio by foreign warships in Grecian waters------___ April______1925 Use of 300 and 450 meters restricted by Newfoundland______October_____ 1925 Use of radio within territorial waters of Finland______March__-__ 1927 Use of radio prohibited in ports of Spain______July___r~__ 1927 Use of radio in Peruvian ports______December___ 1927 Vessels clearing Chilean ports required to be equipped with radio transmitters__ January_____ 1928 Health regulations governing vessels equipped with radio entering ports of August______1928 Australia. Use of transmitters on merchant ships in harbors of the United Kingdom______do______1930 France : Radio-compass station regulations------______do-__-_ 1920 Watch hours on French vessels------May------1921 Paris Technical Conference ------November__ 1921 Regulations regarding use of radio in French waters ------__----- October_____ 1925 Frequencies: Normal wavelength (600 meters) to be used______September__ 1920 860 and 485 meters for broadcasting concerts, crop and weather reports, respeo- January____ 1922 tively. 400-meter wave for class B broadcasting stations______September__ 1922 360-meter wave for class C broadcasting stations------__ May______1923 New York Conference recommends discontinuance of 450 meters by ships__-___ February___ , 1924 450 meters not to be used for communication with stations in United States_____ May 199.4 Use of 300 and 450 meters restricted___.______._____._____ ._ ._ .___._ .______~___do_____ 1925 RADIO SERVICE BULLETIN 23
INDEX OF REGULATIONS AND MISCELLANEOUS ARTICLES APPEARING IN THE RADIO SERVICE BULLETIN, YEARS 1920 TO 1931-continued
Subject Month Year
Frequencies-Continued. 300, 600, and 706 meters discontinued in lieu of 715 and 875 meters by ships and June______1925 land stations on the Great Lakes. Use of 300 and 450 meters not to be used within range of German coast stations__ July------1925 Useof 300and 450meters prohibited within 250milesof Great Britainand United October_____ 1925 States. Provisional regulations for the conduct of long, continuous wave ship and shore February___ 1928 commercial communication between certain countries. List of high-frequency channels allocated to commercial stations______August______1928 Prague broadcasting frequency plan--__------May______1929 Prague broadcasting frequency plan revised------_-_------August______1929 Germany: 300 and 450 meters not to be used within range of coast stations ------July______1925 Great Britain: War-time restrictions regarding stations in Mediterranean Sea______October_____ 1919 New wireless act______do______1920 Act effective Dec. 1, 1920, regarding vessels of 1,600 gross tons or over while in _____do______1920 United Kingdom ports. Hours of watch on ships------November__ 1920 Regulations regarding use of radio by merchant vessels in harbors of------the United August______1925 Kingdom. Regulations regarding use of radio by foreign warships in port ------_------September__ 1925 Use of 300 and450 meters prohibited within 250 milesof Great Britain and United October_____ 1925 States coasts . Great Lakes: 300, 600, and 706 meters discontinued in lieu of 715 and 875 meters by June ------1925 ships and land stations on the Great Lakes. Hours: Watch hours for Italian vessels______October_____ 1920 Watch hours for British vessels__------November__ 1920 Watch hours for United States Shipping Board vessels______December___ 1920 Watch hours for French vessels______May______1920 Important events in radio: List of- 1827-1924______.______March______1924 1827-1925______-______-___ .______December___ 1925 1827-1926______.______do______1926 1827-1927______._ ---,-do------1927 1827-1928______-----do------1928 Independent Radio Telegraph Co .: Ship station rate for certain vessels reduced------May-_------1920 Rate for New York station------September__ 1920 Ship station rate increased------_------December___ 1921 Purchased by Radio Corporation of America------January_____ 1928 Inspector (radio) : Civil service examination______.______-----do...... 1923 Title changed to supervisor of radio_------April______1923 Interdepartment Advisory Committee organized------July______1922 Interference : Regulations regarding licensed amateur transmitters must be inductively coup- October_____ 1919 pled; regulations 3 and 4, act of Aug. 13, 1912, must be observed . Restrictions on special amateur stations-stations not capable of adjustment on April______1921 200-meter wave. Investigation of interference caused by a Cottrell electric precipitator______June______1924 Investigation of power-line interference------______do______1924 Interference from electrical precipitators------August______1924 Interference from harmonics of broadcasting stations______December_ 1924 New York conference on radiating receiving sets _------_------February___ 1924 Interference from harmonics (third National Radio Conference)______December___ 1924 International Radio Telegraph Co.: Ship-to-shore rate reduced to 6 centsper word forInternational Radio Telegraph May______1920 stations. Rates for Newport, New London, and New York______September__ 1920 Rate for Cape May, N.J------November__ 1920 Italy: Coast stations opened on Aug. 15,1919------October___ 1919 Passenger vessels over 1,600 tons to be equipped______February___ 1921 Key to radio room required to be left on shipboard______-_____ June------1920 Legislation: Joint Resolution No. 48, Sixty-sixth Congress (S .1 .170), authorizingoperation of July______1920 Government stations for use of general public and for other purposes. Joint Resolution No . 48, June 5, 1920, amended (H . J. Res. 7), Sixty-seventh -----do------1923 Congress, Apr. 14, 1922 . Joint Resolution No . 47, Dec. 8, 1926, limiting time for which station license may December__ _ 1926 be granted. Law of the Philippine Islands------February___ 1927 Radio act of 1910, as amended 1912______:______Jul 1927 Do_-__ :______-______1929____ M Do______.______January__. 1930 24* RADIO SERVICE BULLETIN
INDEX OF REGULATIONS AND MISCELLANEOUS ARTICLES APPEARING IN THE RADIO SERVICE BULLETIN, YEARS 1920 TO 1931-continued
Subject Month Year
Licenses : Assignment of call not authority for operation of stations other than ship or April------1920 amateur. Do______1920May Ship and amateur stations may operate pending action upon formal applica- -__-do------1920 tion-par . 86, Aug. 15, 1919, edition of Radio Laws and Regulations, amended. Stations not to operate until authorized-par . 86, Aug. 15, 1919, edition of June ------1921 Radio Laws and Regulations, amended. Marconi Co.: Radio Corporation of America operating and controlling all stations February___ 1920 formerly held by Marconi Co Market reports: Broadcasting schedule______.______.______November__ 1921 Do______--______-______------______--__-__-_-__--_ July---- 1922 Measurements : Some experimental radio field intensity measurements and obser- March______1927 vations. Medical advice : Seamen's Church Institute station in New York______November__ 1920 For ships at sea by United Fruit Co .'s stations------do______1922 List of marine hospitals______-_--___-______-_____ ._-_-_-_-______February___ 1925 Radio-Medical Consultation Service established in Belgium------December___ 1927 Furnished ships by Tropical Radio Telegraph Co. and affiliated stations------February___ 1929 Furnished by British stations ------____do______1929 Furnished by Ostend, Belgium------._ May------1929 Furnished by Radio Corporation of America stations______November__ 1929 Furnished by Swedish stations------April______1930 Furnished by British stations ------August______1930 Navy Department : Executive Order No . 3228, Feb. 13 1920, returning to owners stations taken by March------1920 United States Navy during World War under Executive orders of Apr. 6 and Apr. 30, 1917. Joint Resolution No. 48, Sixty-sixth Congress (S . J. Res. 170) authorizing oper- July------___ 1920 ation of Government stations for use of general public and for other purposes . Rate changed et Bar Harbor station------December___ 1921 Black Sea-Constantinople-ship station (NTTX) located in ------July------1922 Joint Resolution No . 48, June 5, 1920, amended (H . J. Res. 7), Sixty-seventh -----do______1923 Congress, Apr. 14, 1922 . International Radio Accounting Section transferred from Navy Department to August______1924 Department of Commerce. List of Marine hospitals furnishing medical advice------February--_ 19:5 Rates at land stations increased------November- 1928 Operator licenses and regulations: Amateur- First-grade license regarding code test, etc.-Radio Laws and Regulations, August ------1919 ediJuly 27, 1914, pars . 122 and 126 amended Dec. 20, 1918 . Extra first-class operator's license reestablished------July------1928 Commercial- First and second grade license regarding code test-Radio Laws and Regu- August______1919 lations, edition July 27, 1914, par. 126 amended Dec. 20, 1918. Operators holding emergency licenses or temporary permits should take September__ 1919 examination. Duplicate licenses not to be issued for 30 days afterloss of original is reported_ February___ 1920 List of lost licenses______-_------______-______-_-----_-______-____-_ March______1920 Operators who fall required to wait 3 months before taking another exami- May______1920 nation . Licenses after June 30, 1921, will certify to efficiency in radio communication March______1921 and duration and quality of service. License may be renewed upon 12 months' satisfactory service during 2-year May______1921 license period . Third class established______June______1930 Cargo- Operator's regulations amended; must be able to distinguish S O S calls- November-_ 1920 par. 111, Laws and Regulations, edition Aug. 15, 1919, amended Nov. 1, 1920. Experiment and instruction grade, par. 119, Aug. 15, 1919, edition of Radio May______1920 Laws and Regulations, amended. Any or all classes- Operators who fail to pass examination required to wait 3 months before -----do------1920 taking another examination. Transmitting test required ------June------1920 Statistics showing number years 1913-1923, inclusive------_____ February___ 1923 Amended operator regulations______.______July ------1927 Do___-____-______-______December___ 1927 Do_____-______-_--______-- January_____ 1928 Service of operators at foreign stations not considered in the issuance of March------1928 renewal licenses . Examination of operators in Canal Zone discontinued______June ------1928 Revised operator's regulations------December___ 1928 Do______-______-_ September__ 1929 Do___-______-______.__-_ January__ 1931 RADIO SERVICE BULLETIN 25
INDEX OF REGULATIONS AND MISCELLANEOUS ARTICLES APPEARING IN THE RADIO SERVICE BULLETIN, YEARS 1920 TO 1931-continued
Subject Month Year
Operators: Broadcast Commercial second class or higher required for operation broadcast station__ January__1922 Regulations amended______-----do .----- 1929 Do______June______1929 Telephone, regulations amended______do______1929 Visual broadcasting, regulations amended______July______1929 Airplane, procedure for obtaining------June______1930 Philippine Islands: Radio law______February___ 1927 Vessels required to be equipped with radio______October_____ 1928 Ports, use of radio while in, not to be used except in urgent cases and then only on September__ 1919 300 and 450 meters . Press traffic: Repetition should be avoided______July______1920 Radio Division : Transferred from Bureau of Navigation to office of Secretary of March______1927 Commerce . Rates: Effective Apr. 1, 1920, North and South American and transoceanic service rates April______1920 of Radio Corporation of America vessels will be 4 cents per word . No relay charge by vessels controlled by International Radio Telegraph Co_____ -----do______1920 Ship-to-shore rate reduced to 6 cents per word for International Radio Telegraph May______1920 o. stations. Ship station rate for certain vessels controlled by Independent Wireless Tele------do______1920 graph Co . increased to 8 cents. International Radio Telegraph Co . at Newport, New London, and New York__ September__ 1920 Independent Wireless Telegraph Co. station at New York______do______1920 International Radio Telegraph Co . rate at Cape May______November__ 1920 Radio Corporation of America New York station increased______February___ 1921 Southern Pacific Co . new ship rate 8 cents______April______1921 Radio Corporation of America new ship rate for North and South America serv------do______1921 ice (8 cents) . Mutual Telephone Co______June______1921 United States Shipping Board increased______November__ 1921 International Wireless Telegraph Co . increased ship------December___ 1921 Bar Harbor naval station changed______do______1921 3-cent rate applicable to certain vessels increased to 10 cents______April______1922 Instructions for handling traffic accounts______June______1922 Rates at United States Army and United States Navy land stations increased__ November__ 1928 Radio Corporation of America, R. C. A. Communications, Radiomarine Corporation of America: New York station rate increased______February___ 1921 Coast rate for certain vessels increased from 3 cents to 10 cents per word______April______1922 Resolutions: Joint Resolution No . 48, Sixty-sixth Congress (S . J. Res. 170), authorizing opera- July______1920 tion of Government stations for use of general public and for other purposes . Joint Resolution No . 48,June 5, 1920, amended (H . J. Res. 7), Sixty-seventh Con- _____do______1923 grass, Apr. 14, 1922. Joint Resolution No . 47, Dec. 8, 1926,limiting time for which stationlicenses may December___ 1920 be granted. Shipping Board (United States): lours of watch for vessels------do------1920 Rates increased______November__ 1921 Ships: Stations may operate pending action upon application for license______May______1920 Statistics : Number of operators and stations-years 1913-1923 ------February--- 1923 Do______-______do______1931 Time: Relation between Greenwich mean time and standard times in use in the September_ _ 1928 United States . Visual broadcasting : Class of operators' licenses required______July______1929 War-time restrictions removed: United States amateurs removed Oct. 1, 1919______October_____ 1919 Canadian removed July 24,1919______do______1919 British in Mediterranean removed______do______1919 All commercial stations taken by United States Navy under Executive orders March______1920 Apr. 16 and 30, 1917, returned to owners. Executive Order No . 3228, Feb. 13, 1920, returning stations to owners______do______1920 List of land stations reopened ------_____do______1920 Do-______-______April______1920 Weather reports: Radiographic code, United States Weather Bureau______May______1921 Penalty for counterfeit weather forecasts______January_____ 1922 Regulations pertaining to broadcasting of weather, crop, and market information_ April______1922 From Swan Island, Caribbean Sea------October_____ 1922 'Wavelength. (See Frequencies.)