Federal Radio Commission General Orders In

Home , August 1928, Federal Radio Commission, June 1929, March 1927, May 1927, May 1928

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 Station licenses extended ---__------_-______101 Nov . 14,1930 November_ _ 1930 General Order 101 repealed -__--___-___-_-______110 Mar. 27,1931 April______1931 Amateurs: Definition of______24 Mar . 7,1928 March------1928 Definition of, additional frequency band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 broadcasting 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, 1929 y______1929 Postponement of General Order 43______71 Sept . 18, 1929 Mtember-_ 1929 General Orders 43 and 46, limiting programs to certain 81 Dec. 20,1929 December___ 1929 station repealed . Construction permits: Regulations governing hearings on application for a con- 37 Aug . 22, 1928 1928 struction permit. August______Regulations governing issuance to police departments___ 85 Apr . 8, 1930 April------1930 Additional data required in consent to assignment of 95 Sept . 29, 1930 1930 construction permit or license. September--' Control apparatus : Installation of automatic frequency con- 77 Nov . 8,1929 November_ _ 1929 trol apparatus must be authorized by the Federal Radio Commission. Damped waves: Discontinuance of by other than ships after Jan. 1, 1929_ 51 Oct, 31,1928 ___ do------1928 Regulations governing the sharpness of emissions by 70 Sept . 13,1929 September__ 1929 ships using damped waves. Use of restricted______82 Jan. 3, 1930 December --- 1929 Daylight-saving time : Regulations governing the hours of 61 Mar . 23,1929 March 1929 operation. ____._ Definitions : Of an amateur station______21 Mar. 7, 1928 ___do------1928 Of a daytime broadcasting station______41 Sept . 4, 1928 September-- 1928 Of a limited-time broadcasting station______48 Oct . 22, 1928 October_____ 1928 Relay broadcasting, telephone, and visual broadcasting 62 Apr . 1929 channels defined . 5, 1M April______Of an amateur station ------84 Apr . 4,1930 ___do______1930 Of marine relay service______100 1930 November_ _ 1930 Of terms used in General Order 115, May 25, 1931, re- ______Nov. 10, ------May 1931 garding power of broadcasting stations. - - Distress signals: Rules and regulations requiring broadcast- 66 June 10, 1929 1929 ing stations to give absolute priority to distress communi- June______cations or sign Experimental stations : Regulations governing issuance of 64 May 20,1929 1929 relay broadcasting, visual broadcasting, general experi- _____do-_____ mental, and aircraft experimental station licenses. Frequencies : Broadcasting frequency band not to be extended ; 1,500- 4 Apr. 5,1927 April______low 2,000 kilocycles should be held open for experiments in broadcasting and visual broadcasting. One-half kilocycle deviation allowed, announcement of 7 Apr. 28,1927 _____do______1927 frequency by authority of Federal Radio Commission. Allocation of channels in the broadcasting band to the 40 Aug . 30,1928 August______1928 different zones, a separation of 10kilocycles to be men. tioned . Broadcasting stations permitted to make tests in chang- 45 Sept . 24,1928 September__ 1928 ing frequency- under allocations effective Nov. 11, 1928. Allocation of between 1,500 and 6,000 kilocycles______55 Dec. 22,1928 December___ 1928 Picture and television transmissions restricted in use of 56 Jan. 14, 1929 January_____ 1929 frequencies in the broadcasting band. Relay broadcasting frequencies, Feb. 18, 1929______- March__ .___ 1929 Visual broadcasting frequencies, Feb. 18, 1929______------'1929 Visual, telephone, and relay broadcasting channels 62 Apr. 5, April______1929 defined . 1M Allocation of frequencies between 1,500 and 6,000 kilo- 74 Oct. 11, IM October_____ 1929 cycles, General Order 55 amended. Additional amateur frequency band opened and tele- 76 Nov . 6,1929 November _ . 1929 bands specified. Allocated for amateur stations------84 Apr. 4,1930 April_ __»_ 1930 Allocated for police stations ------85 Apr. 8,1930 _____do___-_ 1930 Allocated forpower company stations______86 _ __ do______._ o_-_.r 1930 Allocated for broadcasting stations-Canadian shared-__ 87 Apr. 7,1930 -May 1930 Visual broadcasting channels restricted to certain widths_ 88 Apr. 14,1930 1930 Allocations for aeronautical and aircraft services------94 June 26,1930 June______1930 RADIO SERVICE BULLETIN 1 7

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

Frequencies-Continued. Changes in allocations for aeronautical and aircraft sta- 99 Oct . 27,1930 October_____ 1930 tions-chains established . Allocation for motion pictures, General Order 74 74 Oct . 11, 1929 November__ 1930 amended. Assignments for broadcasting stations, General Order 107 Mar. 24, 1931 April______1931 No. 87 repealed . Additional allocations to aeronautical and aircraft serv- 112 May 4,1931 May______1931 ices . Broadcasting stations required to operate within 50 116 June 22, 1931 June______1931 cycles of assigned frequency . Regulations (General Orders 62, 88, and 88 as amended) 117 June 24, 1931 __-__do_-_____ 1931 governing visual broadcasting, telephone, and relay broadcasting, frequencies, and station licenses canceled. Change in allocation to aeronautical services______118 _____do______do______1931 Frequencies for Alaska ______-__ 79 Dec. 20, 1929 December___ 1929 Hearings : Rules before Federal Radio Commission______--_ 12 May 27, 1927 May______1927 Testimony______-______-__ 14 June 3,1927 June_-______1927 On reducing interference in broadcasting band______--__ 2 ------March______1928 Designating bands to be cleared of beterodynes ; proce- 19 Nov . 14, 1927 _____do______1928 dure for clearing heterodyning channels . On applications for transoceanic station licenses______29 May 9, 1928 April______1928 Hearings for certain broadcasting stations which have 32 May 25, 1928 May______1928 not satisfied the Federal Radio Commission-list of 162 stations . Regulations governing bearings on application for con- 37 Aug. 22,1928 August______1928 struction permit, renewal of license, etc. Hours of operation: Regulations governing the hours of 6 Mar. 23, IM March______1929 operation of broadcasting stations affected bydaylight saving time . Interference : Broadcasting stations may file affidavits certifying inter- 15 June 7,1927 June_.___.__ 1927 ference is being caused to Its signals. Hearings onreducing in broadcasting band-___---_-----_ 2 Mar. 15, 1927 March----_- 1928 Designating bands to be cleared of heterodynes; proce- 19 Nov. 14,1927 _____do------1928 dure for clearing heterodyning channels . Broadcasting stations restricted as to power used after 53 Nov . 26, 1928 November-- 1928 sunset ; operation during daytime not to cause greater heterodyning than exists during evening, General Order 10 repealed. Picture and television transmissions restricted in use of 56 Jan. 14,1929 January----- 1929 frequencies in the broadcasting band. Regulations deemed necessary to prevent interference by 84 Apr. 4,1930 amateur stations . April______-__----- 1930 Installation of automatic frequency control apparatus 77 Nov. 8, 1929 November__ 1929 must be authorized by Federal Radio Commission. Rules and regulations requiring broadcast stations to 66 June 10, IM June______1929 give absolute priority to distress communications or signals. One-half kilocycle deviation allowed______7 Apr. 28,1927 April______1927 Stations required to operate within 50 cycles of assigned 116 June 22, 1931 June------1931 frequency. Broadcasting stations permitted to make tests in chang- 45 Sept . 24,1928 September-- 1928 ing frequency under allocations effective Nov . 11, 1928. Procedure to be followed in reply to notifications of vio- 75 Oct. 30, 1929 November- _ 1929 lations of radio laws, regulations, and orders. Licenses (station and operator) : Extension ofamateur and ship station licenses issued by 1 Mar . 15, 1927 March------1927 the Department of Commerce until further orders . Extension of coastal point-to-point, technical and train- 3 Mar . 27,1927 _---_do__ .___ 1927 ing, and experimental station licenses in force on Feb. ' 22, 1927, until further orders. Extension of broadcasting station licenses issued under 5 Apr. 5, 1927 April______1927 Department of Commerce ended; permit must be obtained. Permits for broadcasting stations discontinued; licenses 11 May 21,1927 May______to be issued for 60 days. 1927 Permits extended to June 15, 1927, General Order No. 11 13 May 28,1927 amended. _____do------1927 Extension of broadcastingDo______station licenses______21 Dec. 1, 1927 December--- 1927 23 Feb. 20, IM February--- 1928 Do______25 Mar. 27, 1928 March______1928 Land, technical and training, experimental ship, and 26 -----do__.__-_ 1928 amateur station licenses extended under General Or- ders 1 and 3 terminated. 18 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

Licenses (station and operator)-Continued. Extension of broadcasting station licenses_____--______18 Oct . 12,1927 March______1928 Do___----__-_-_-_____-______--____-____ 22 Jan. 16, 1928 ___ do______1928 Do______-____-____--______27 Apr. 20,1918 April-______1928 Extension of certain broadcasting station licenses (162) 32 May 25, 1928 May------1928 until hearings are held on application for renewals . Extension of broadcasting station licenses______33 -----do------do ------1928 Extension of portable broadcasting station licenses______34 -----do------do------1928 Extension of broadcasting station licenses not subject to 35 July 25, 1928 July ------1928 General Order No. 32. Extension of broadcasting station licenses subject to 36 July 26, 1928 -----do______1928 General Order No. 33. Regulations governing hearings on application for con- 37 Aug . 22,1928 August______1928 struction permit, renewal of station license, etc. Extension of broadcasting station licenses not subject to 38 _____do______------_____do______1928 General Order No. 32. Extension of coastal, point-to-point, technical and train- 39 -----do______do------1928 ing, experimental, ship, and amateur station licenses previously extended by General Orders 1, 3, and 26. Extension of broadcasting station licenses until Nov . 11, 44 Sept . 8,1928 September-- 1928 1928, except those affected by General Order No. 32. Extension of coastal, point-to-point, technical and train- 47 Oct . 23, IM October----- 1928 ing, experimental, and ship station licenses until Dec. 31, 1928. Extension of coastal, point-to-point,experimental, and 54 Dec . 22, IM December--- 1928 ship station licenses until Jan. 31, 1929. Extension of coastal, point-to-point, experimental, and 58 Jan. 23,1929 January----- 1929 ship station licenses until Mar. 16, 1929. Extension of coastal, point-to-point, and experimental 60 Mar. 9, 1929 March------1929 station licenses until June 1, 1929. Extension of broadcasting station licenses until Oct . 31, 69 June 20,1929 June ------1929 1929, and other classes of station licenses and construction permits until Oct. 1, 1929. Alaskan station licenses extended _____-______-______72 Sept . 29, 1929 September-- 1929 Do______73 Oct . 10, 1929 October ----- 1929 Alaskan station licenses extended until Jan . 25, 1931_____ 83 Jan. 25,1930 January ----- 1930 Regulations governing issuance of license for police sta- 85 Apr . 8, 1930 April------1930 tions. Application for renewal must be filed 30 days prior to 89 Apr. 21,1930 -----do----- 1930 date of expiration-station must cease operating pro- vided no action is taken upon renewal . Operators' and station licenses required to be posted____ 90 May 19, 1930 May------1930 Additional data required in application for consent to 95 Sept . 29, 1930 September- 1930 assignment of construction permit or station license. Regulations governing the issuance of "marine relay 100 Nov. 10, 1930 November __ 1930 service" licenses. Station licenses extended ______-______101 Nov. 14, 1930 ___do______1930 Broadcasting station licenses, with exceptions, extended 103 Jan. 30,1931 January_____ 1931 until Apr. 30, 1931. General Order 103 repealed; extension of broadcasting 109 Mar. 26,1931 April______1931 stations. General Order 104 repealed ; extension of Alaskan station 110 Mar. 27, 1931 _____do______1931 licenses. Application for renewal of a station license must be filed 114 May 15, 1931 May------1931 60 days prior to expiration. Log: , Marine stations required to keep a log______104 Feb. 2, 1931 February--- 1931 Broadcasting stations required to keep a program and 106 Feb. 16,1931 -----do------1931 operating log. Amendment to General Order 106______-______Feb. 27, 1931 -----do-_------1931 Marine service : Definition of marine relay service ______-_-___ 100 Nov. 10, 1930 November __ 1930 Stations required to keep a log____-______104 Feb. 2, 1931 February___ 1931 Mechanical reproduction : Nature of, must be announced ______-______-__--_____ 16 Aug. 9, 1927 August------1928 Character must be announced______49 Oct. 26, 1928 October--_ 1928 Character ordered to be announced, General Order 49 52 Nov. 26, 1928 November- 1928 modified . No. 52 repealed-character ordered to be announced_____ 78 Dec . 5, 1929 December--- 1929 Motion pictures: Temporary service______74 Oct. 11, 1929 November- 1930 Operators : Operators ofcertain stations required tokeep continuous 66 June 10, 1929 June______-_ 1929 watch at certain stations operating between 550 and 1,000 kilocycles. License required to be posted ------90 May 19, 1930 may 1930 Required to be on duty at transmitter------113 May 11, 1931 -_-__do___-__ 1931 RADIO SERVICE BULLETIN 19

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

Police radio stations : Regulations governing issuance of construction permit 85 Apr. 8, 1930 April______1930 for station (definition, frequencies, power, etc.) . Regulations governing issuance of license for station_____ 85 _ ___do______do______1930 Portable stations: Licenses only issued broadcasting stations for 120 days, 6 Apr. 26,1927 -----do------1927 100 watts, 1,470-1,490 kilocycles. Broadcasting stations no longer licensed______30 May 10, 1928 May______1928 Extension of portable broadcasting station licenses______34 May 25, IM _____do______1928 Power: Applications for increase between 6 a. m. and 6 p. m. for 10 May 18,1927 _____do______1927 educational, religious, civic, and market news stations . Broadcasting stations not allowed power in excess of 25 42 Sept . 7,1928 September-- 1928 kilowatts except for experiments and daytime programs. Broadcasting stations restricted after sunset, operation 53 Nov. 26, 1928 November__ 1928 during daytime not to cause greater heterodyning than exists during evening, General Order 10 repealed. Amount allowed power company stations______86 Apr. 8,1930 April______1930 Amount allowed police stations______85 _____do______do______1930 Power of new broadcasting installation limited______91 May 23, 1930 May______1930 Broadcasting stations classified according to values 92 June 17,1930 June______1930 (units) for zone equality . Broadcasting stations classified according to values ______July______1930 (units) for zone equality--correction to General Order 92, June 17, 1930. Regulations governing a broadcasting station______97 Oct. 6,1930 October_____ 1930 Re ulations governing a broadcasting station, General 108 Mar. 26, 1931 April______1931 rder 97 amended. Regulations governing a broadcasting station, General ------_----___ -----do______1931 Order 108 repealed . General Order 97 amended______ 111 Apr. 20, 1931 -----do______1931 Regulations determining power of a broadcasting station- 115 bay 25,1931 May______1931 Definition of technical terms used in General Order 115______-___do------1931 Power companies: Regulationsgoverningthe operation by___86 Apr. 8,1930 April______1830 Records-mechanical reproductions: Nature of, must be announced______16 Aug. 9, 1927 August______1927 Character must be announced______49 Oct. 26, 1928 October_____ 1928 Character ordered to be announced, General Order 49 52 Nov. 26,1928 _____do______1928 modified . Character ordered to be announced______78 Dec. 5,1929 December___ 1929 Relay broadcasting : Rules and regulations governing, Feb. 18, 1929______------March______1929 Defined______62 Apr. 5, IM April______1929 Rules and regulations governing issuance of construction 68 June 10, 1929 June______1929 permit and license for. Channels restricted to certain widths______ 88 Apr. 14,1930 April______1930 General Orders 88 and 88 as amended canceled______117 June 24 1931 June ------1931 Sale of stations: Not to be sold without consent of Federal 9 May 13,1927 May______1927 Radio Commission . Studios: Permission to move required______28 Apr. 20, 1928 April______1928 Subpoenas: Regulations governing issuance______67 June 10, 1929 June______1929 Telephone: Channels defined------ 62 Apr. 5,1929 April______1929 Channels restricted to certain widths______88 Apr. 14,1930 _____do______1930 General Orders 88 and 88 as amended canceled______117 June 24, 1931 June______1931 Tests: Broadcasting stations permitted to make tests in 45 Sept . 24,1928 September__ 1928 changing frequency under allocations effective Nov. 11, 1928 . Transoceanic : Hearings on applications for station licenses__ 29 May 9,1928 May______1928 Travel : Authorization for members and employees of Fed- 65 May 27,19n June______1929 eral Radio Commission to travel for purpose of holding and assisting at hearings and investigations . Violations: Procedure to be followed in reply to notifications 75 Oct. 30,1929 November-- 1929 of violations of radio laws, regulations, and orders . Visual broadcasting : Regulations governing______50 Oct. 31, IM _ ___do______1928 Transmission restricted in use of frequencies in the 56 Jan. 14,1929 January_____ 1929 broadcasting band. Rules and regulations governing, Feb. 18, 1929______March______1929 Defined______62 Apr. 5,1929 April______1929 Channels restricted to certain widths______88 Apr. 14,1930 _____do______1930 General Order 88 and 88 as amended canceled______117 June 24, 1931 June______1931