INDEX TO GENERAL ORDERS OF THE FEDERAL RADIO COMMISSION AS PUBLISHED IN THE RADIO SERVICE BULLETIN Date of Radio No. of Service Bulletin Subject general Date of- order Month Year Aeronautical (aircraft): Frequency allocations-chains established_______________ 94 June 26, 1930 June________ 1930 Changes in frequency allocations to aeronautical and 99 Oct. 27,1930 October_____ 1930 aircraft services-chains established. Additional frequency allocated to_______________________ 112 May 4, 1931 May________ 1931 Frequency allocation changed___________________________ 118 June 24, 1931 June________ 1931 Alaska : Station license extension orders. (See index under Licenses.) Regulations governing issuance ofaconstruction permit, 79 Dec. 20, 1929 December_-_ 1929 license. etc. Station licenses extended ---__-------_-_____ __________ 101 Nov . 14,1930 November_ _ 1930 General Order 101 repealed -__--___-___-_-______________ 110 Mar. 27,1931 April________ 1931 Amateurs: Definition of____________________________________________ 24 Mar . 7,1928 March------ 1928 Definition of, additional frequency band opened, tele- 76 Nov. 6,1929 November __ 1929 phone bands specified . Revised station regulations (definition, classification, 84 Apr. 4, 1930 April-------- 1930 service, frequencies, apparatus, interference, etc.). Revised station regulations (General Order 84 amended)_ 84 Sept . 22,1930 September- 1930 Apparatus: Installation of automatic frequency control must be 77 Nov. 8,1929 November __ 1929 authorized by the Federal Radio Commission. Kind authorized for use by amateur stations____________ 84 Apr. 4, 1930 1930 Power of broadcast transmitters limited-method for 91 May 23,1930 1930 determining power of. Regulations governing the licensing and operation of an Oct. 96 6,1930 October---- 1930 auxiliary broadcasting station. Regulations governing the power of a broadcasting sta- 97 _____do_______ 1930 tion. Broadcasting station not to be moved unless authorized 98 Got. 27, 1930 1930 upon formal application . Broadcasting: Call letters : To be announced at least every 15 minutes_ 8 May 5, 1927 May------- 1927 Candidates for public office, use ofbroadcasting stations 81 May 11, I= 1928 by. Chain programs- Allowed for only 1 hour unless stations are 300 miles apart______________________________________________ 43 Sept. 8, 1928 September- 1928 Postponement of General Order 43-_-_-___- -------- Oct. 465, 1928 October_____ 1928 Do ______________________________________________ 57 Jan . 18, 1929 -----January-----February-May-------- 1929 59 Feb. 16,1929 1929 Do_ _______________-_____ ___ ________ ______ 63 May 15, 1929 1929 Do_ 71 Sept. 18, 1929 September__ 1929 General Orders 43 and 46, limiting programs to cer- 81 Dec. 20,1929 1929 tain station repealed. December-- Regulations governing hearings on application for a con- 37 Aug . 22, 1928 August----- 1928 struction permit. Installation of automatic frequency control apparatus 77 Nov. 8, 1929 November- 1929 must be authorized by the Federal Radio Commission. Regulations governing the hours ofoperation of daylight 81 Mar. 23,1929 1929 saving time . March---- RADIO SERVICE BULLETIN 15 INDEX TO GENERAL ORDERS OF THE FEDERAL RADIO COMMISSION AS PUBLISHED IN THE RADIO SERVICE BULLETIN-continued Date of Radio No. of Service Bulletin Subject general Date of- order Month Year Broadcasting-Continued. Definitions- Ofa daytime station ---------- --------------------41 Sept . 4, IM September-- 1928 0f a limited time station---------------------------- 48 Oct . 22,1928 October.-___ 1928 Rules and regulations requiring stations to give absolute 66 June 10,1929 June________ 1929 priority to distress communications or signals. April________ Frequency band not to be extended ; 1,500-2,000 kilo- 4 Apr. 5,1927 1927 cycles should be held open for experiments in broad- casting and visual broadcasting . One-half kilocycle deviation allowed ; announcement of 7 Apr. 28,1927 1927 frequency byauthority of Federal Radio Commission. _____do_____ Allocation ofchannels to the different zones, aseparation 40 Aug. 30,1928 August------ 1928 of 10 kilocycles to be mentioned . Stations permitted to make tests in changing frequency 45 Sept. 24,1928 September-- 1928 under allocations effective Nov . 11, 1928. Hearings for certain stations whichhave not satisfied the 32 May 25,1928 May-------- 1928 Federal Radio Commission-list of 162 stations. Regulations governing the hours of operation of stations 6 Mar . 23,1929 March ------ 1929 affected by daylight saving time. Stations may file affidavits certifying interference is 15 June 7,1927 June______-- 1927 being caused to its signals. Hearings on reducing interference ---------------------- 2 Mar. 15,1927 March------ 1928 Designating bands to be cleared of heterodynes-pro- 22 Jan. 16,1928 -----do------- 1928 cedure for clearing heterodyning channels. Stations restricted as to power used after sunset ; opera- 53 Nov. 26,1928 November-'- 1928 tion during daytime not to cause greater heterodyning than exists during evening, General Order 10 repealed . Mechanical reproductions- Nature of, must be announced---------------------- 16Aug. 9,1927 August_.____ 1928 Character must be announced ----------------------- 49 Oct. 26, IM October----- 1928 Character ordered to be announced, General Order 52 Nov . 2o,1928 49 modified . November-- 1928 Character ordered to be announced, General Order 78 Den No. 52 repealed . 5, 1929 December --- 1929 Operators ofcertain stations required to keep continuous 66 June 10,1929 1929 watch at certain stations operating between 550 and June______-_ 1,000 kilocycles. Portable stations no longer licensed ---------------------- 30 May 10,1928 May- ._ ..___ 1928 Extension of portable station licenses-------------------- 34 May 25, 1928 _____do__--__ 1928 Applications for increase in power between 6 a. m. and 10 May 18, 1927 -..-_do ------ 1927 6 p. m. for educational, religious, civic, and market news stations. Stations not allowed power in excess of 25 kilowatts ex. 42 Sept. 7,1928 cept for experiments and daytime programs . September-_ 1928 Stations not to be sold without consent of Federal Radio Commission. 9 May 13,1927 May 1927 Permission to move studios required ------------------- - 28 Apr. 20, 1928 April_-_.-___ 1928 Frequency allocations-Canadian shared ----------------- 87 Apr. 7,1930 _____do___-___ 1930 General Order No. 87 postponed (amended) on account 87 Apr. 25,1930 ____.do_-____ 1930 of restraining court order regarding Stromberg-Carl- son Mfg. Co. v. Federal Radio Commission. Power of new installations limited and method for de- 91 May 23,1930 termining power of. May_____.__ 1930 Stations classified according to values (units) for equality . - zone 92 June 17,1930 June________ 1930 Stations classified according to values (units) for zone 92 equality---correction to. -----do_______ July-_-__ .-__ 1930 Regulations governing the licensing and operation of 96 Oct. auxiliary stations. 6,1930 October----- 1930 Regulations governing the power of stations------------- 97 _____do_______ -----do____ .. 1930 Stations not to be moved unless authorized upon formal application. 98 Oct. 27,1930 -----do____ ._ 1930 List of generalorders applicable to broadcasting stations__ -------- --------------- December___ 19.10 Station licenses, with exceptions, extended untilApr. 30, 1931. 103 Jan . 30, 1931 January_____ 1931 Regulations governing applicatlons for facilities in over. 102 Jan . 8,1931 ___do______ 1931 quota, underquota, underunit, and quota allocations. Regulations and definitions regarding hours ofoperation, 105 Feb. 12,1931 tests power, daytime station, etc. February_ ._ 1931 Amendment to General Order 105----------------------- 105 Mar . 2,1931 1931 Stations required to keep a program and operating log___ 106 Feb. 16, 1931 - ---do------- 1931 Amendment to General Order 106----------------------- 106 Feb. 27, 1931 -----do------- 1931 Frequency assignments, General Order No. 87 repealed _ 107 Mar. 24, 1931 April-------- 1931 Regulations governing power, General Order No. 97 108 Mar. amended. 26,1931 -----do------- 1931 Station licenses extension, General Order 103 repealed__- 109 -----do___-___. ----- 1931 Regulations governing power, General order 108 re- 111 Apr. 20, 1931 General Order 97 amended. o. ____ 1931 16 RADIO SERVICE BULLETIN INDEX TO GENERAL ORDERS OF THE FEDERAL RADIO COMMISSION AS PUBLISHED, IN THE RADIO SERVICE BULLETIN-continued Date of Radio No. of Service Bulletin Subject general Date of- order Month Year Broadcasting-Continued. Regulations determining power of_______________________ 115 May 25, 1931 May________ 1931 Definitions oftechnical terms used in regulations govern- 115 ____________________do_______ 1931 ing power. Stations required to operate within 50 cycles of assigned 116 June 22,1931 June________ 1931 frequency . Call letters : To be announced at least every 15 minutes ------ 8 May 6,1927 May________ 1927 Canada: Shared broadcasting frequencies___________________ 87 Apr. 7,1930 April________ 1930 Candidates for public office, use ofbroadcasting stations by__ 31 May 11, 1928 May-------- 1928 Chain programs : Allowed for only 1 hourunless stations are300 milesapart_ 43 Sept . 8, 1928 September-- 1928 Postponement of General Order 43______________________ 46 Oct . 5,1928 October ----- 1928 Postponement of General Order 43---------------------- 57 Jan. 18,1929 January----- 1929 Postponement of General Order 43______________________ 59 Feb. 16,1929 February- 1929 Postponement of General Order 43______________________ 63 May 15,