Documents of the Administrative Radio Conference for Region 1 (Geneva, 1949) To reduce download time, the ITU Library and Archives Service has divided the conference documents into sections. • This PDF includes Document No. 1 - 100. • The complete set of conference documents includes Document No. 1 - 314. This electronic version (PDF) was scanned by the International Telecommunication Union (ITU) Library & Archives Service from an original paper document in the ITU Library & Archives collections. La présente version électronique (PDF) a été numérisée par le Service de la bibliothèque et des archives de l'Union internationale des télécommunications (UIT) à partir d'un document papier original des collections de ce service. Esta versión electrónica (PDF) ha sido escaneada por el Servicio de Biblioteca y Archivos de la Unión Internacional de Telecomunicaciones (UIT) a partir de un documento impreso original de las colecciones del Servicio de Biblioteca y Archivos de la UIT. (ITU) ﻟﻼﺗﺼﺎﻻت اﻟﺪوﻟﻲ اﻻﺗﺤﺎد ﻓﻲ واﻟﻤﺤﻔﻮظﺎت اﻟﻤﻜﺘﺒﺔ ﻗﺴﻢ أﺟﺮاه اﻟﻀﻮﺋﻲ ﺑﺎﻟﻤﺴﺢ ﺗﺼﻮﯾﺮ ﻧﺘﺎج (PDF) اﻹﻟﻜﺘﺮوﻧﯿﺔ اﻟﻨﺴﺨﺔ ھﺬه .واﻟﻤﺤﻔﻮظﺎت اﻟﻤﻜﺘﺒﺔ ﻗﺴﻢ ﻓﻲ اﻟﻤﺘﻮﻓﺮة اﻟﻮﺛﺎﺋﻖ ﺿﻤﻦ أﺻﻠﯿﺔ ورﻗﯿﺔ وﺛﯿﻘﺔ ﻣﻦ ﻧﻘ ًﻼ 此电子版（PDF版本）由国际电信联盟（ITU）图书馆和档案室利用存于该处的纸质文件扫描提供。 Настоящий электронный вариант (PDF) был подготовлен в библиотечно-архивной службе Международного союза электросвязи путем сканирования исходного документа в бумажной форме из библиотечно-архивной службы МСЭ. © International Telecommunication Union Administrative Radio Conference RI Doc, N° 1 E for Region I Geneva« 1949 May, 1949 (Submitted in English) Note by Secretariat The attention of the Region 1 Conference is drawn to the attached letter dated 28 October 194&, from the Chairman of the International Administrative Aeronautical Radio Conference to the Chairman of the International Frequency Registration Board* BIBLIOTHEQUE (71-2^-71) DE L'U. I.T. 1 International Administrative Aeronautical Radio Conference GENEVA October 28th, 194& Mr, Paul D, Miles Chairman, International Frequency Registration Board, Geneva. Report of the Aeronautical Conference (First Session) concerning the Aeronautical Mobile (OR) Service 1 . I desire to draw your attention to volumes 1 and 2 of the report of the International Administrative Aeronautical Radio Conference, First Session, Geneva 1948. 2* The Aeronautical Conference has made recommendations to the I.F.R.B., which it desires should bp passed to Regional Conferences, concerning allocations to the aeronautical mobile (OR) service in the following shared bands to be dealt with by those regional Conferences : 3155-3200 kc/s (Regions 1 and 2 only) Pages 64 & 66 3200-3230 kc/s (Regions 1 and 2 only) Pages 64. & 66 3. In making the recommendations enumerated above the Conference realized that the regional Conferences are the only bodies capable of deciding how much spdce each service sharing a band should be apportioned, since they alone would know the requirements of all the services sharing that band. Nevertheless these,tables are not merely the unsatisfied requirements of the aeronautical mobile (OR) service, but rather a list engineered into channels indicating the space which the Aeronautical Conference hopes that the regional Conferences can make available to this service in the bands concerned. (Vol.2 para. 5(2) b). If they decide that this is not possible, it is desired that they should accord priority to channels A.B.C. etc. in that order. 4. It is further requested, that wherever possible allocations made by the regional Conferences to the aeronautical mobile (OR) service should be made on the basis of the technical standards employed by the Conference (Vol 2 para. 6 (2) b) as contained in olume 1 and Aer-Document 193. 5. The service and interference ranges and the repetition distances employed in calculating sharing possibilities are contained in Aeiv* 193> a copy of which is enclosed for roforonce. signed J.D, Furze fo r A rthur A. Lebel Chairman (71-24-71) i ADMINISTRATIVE RADIO CONFERENCE RI Doc* N° 2-E for Region I May, 1949 Geneva, 1949 (Submitted in English) Note by Secretariat The attention of the Region I Conference is drawn to the attached letter dated 13 December 1948, from the Chairman of the Region 3 Preparatory Committee to the Chair­ man of th e P ro v isio n a l Frequency Board# (7 -7 -7 ) 13 December 194& PREPARATORY COMMITTEE Region 3 Conference Mr» Paul D • Mile s Chairman Provisional Frequency Board Palais Wilson Geneva Dear Mr» M iles* Service Prefix and Regional Requirement Numbers 1* It is desired that the following* which has been agreed be­ tween the Preparatory Committee of the Region 3 Conference and Mr* C*Wo Loeber (representing the Requirements Committee of the PoFeBo)* in respect of service prefix and regional requirement numbers* should be brought to your attention for favour any further action considered necessary*. (a) That the letter nBls has been adopted in the light of the following remarks as the service prefix letter to requirements for the medium frequency b ro ad castin g serv ice in the band 535 - 1605 kc/s® (b) That the letter S’D,! has been adopted as the service prefix letter to ©quirements for the radionavigation (aeronautical and maritime) serv ice 9 (c) That for all additional requirements submitted to the Region 3 Conference* a number from the series Z01 - Z99 Y01 - Y99 X01 — X99 9«o»**O90O9O* e tc o * will be allotted# Thus the first additional fixed requirements received from Australia w ill be given the number HF AS Z01H♦ (d) That* since no requirements for either the medium frequency broadcasting or radionavigation services w ill be dealt with by the P«F*B** Administrations may* in lieu of using a number from the services given in (c) above, allot a number from the series 1 - 999o Thus the first radio­ navigation service requirement received from Indonesia would be allotted the number !!D EX 1!^ (e) That the circuit numbers previously given by the P#FoBo to any of the requirements submitted to it and subsequently passed down to the Region 3 Conference for consideration* w ill not be altered«> (7-7-3) ~ 2 - (f) That requirements originally received by either the P#F.B» or the Region 3 Conference.* should be given a circuit number by the body receiving it* which number it will retain* even should the re­ quirement be subsequently passed from one body to the other for any reason# 2* It is felt that the agreement reached on this matter should be transmitted to the other Regional Conferences* to enable uniformity to be achieved on this subject# 3 # A copy of this letter has been sent to the Secretary General for his information# Chairman Region 3 Conference Preparatory Committee (7-7-3) Administrative Radio Conference RI Doc. N° 3 E for Region I Geneva, 1949, May, 1949 (submitted in Bhglish) Note by the Secretariat The attention of the Region I Conference is drawn to the attached letter dated 15 February 1949, from the Postmaster General, Government of Southern Rhodesia. The list referred to therein is available in the Secretariat. (71-24-71*) AIRMAIL : N° W.A595/30 GOVERNMENT OF SOUTHERN RHODESIA GENERAL POST OFFICE P#0, Box 792, S a lisb u ry , 15th February 1949 Dear S ir, REGION ONE CONFERENCE : GENEVA. MAI 1949 It is understood that the above-described Conference will deal in particular with frequency requirements below 3900 Kc/s in Region 1 . I have to forward herewith a lis t of frequency requirements in this class in which this Administration wishes to operate in respect o f (a) Fixed Stations (b) Broadcasting Stations. Yours faithfully (signature illegible) POSTMASTER GENERAL The Secretary-General, Region 1 Conference, International Telecommunication Union, Geneva flr/ wme (71-24-71) Administrative Radio Conference RX Doc, N° 4 E for Region I Geneva. 1949 May, 19 4 9 ” Note by Secretariat The attention of the Region I Conference is drawn to the attached letter dated 3 March 1949, from the Chairman of the P*F,B, to the Secretary-General of the I,T.U, CPF/3/201 SW/yb Geneva, 3 March 1949 Mr, F, v , E rn st, Secretary-General of the I.T.U. Palais Wilson, Geneva. S ir , In a letter reproduced in Document N° 3S2 of the P*F,B, 11 October 194&, the Chairman of the European Broadcasting Conference, Copenhagen 1948 drew iry attention to Resolution I of that Conference and, in parti­ cular the request to the P*F*Ba which it contains* (Sec the pink booklet Copenhagen, page 71)• In the words of this text, the European Broadcasting Conference ”* *•, requests the Provisional Frequency Board to give their urgent consideration to the measures which may be taken by the Governments concerned in order to facilitate the implementation of the Copenhagen Plan as of 15th March 1950, in accordance with the decision of the Conference, throughout the Atlantic City bands referred to under 3. above and to take such action as will assist the Governments concerned to conclude the necessary special arrangements»n The P»F»B& is not the competent authority to decide on such arrange­ ments as might prove necessary* This question will be submitted to the Special Administrative Conference in due course* However, it is my opinion that meanwhile the matter should be brought to the knowledge of the Region I Conference for examination as the countries which took part in the Copenhagen Conference w ill, in all probability, be represented at the Region I Conferencev In addition, I would state that the frequency bands mentioned in the Resolution are all between 150 and 1605 kc/s, and are thus outside the bands that are examined by the P*F,B. I therefore beg to ask you to draw the attention of the Region I Conference to the Resolution of the Copenhagen Conference at the appro­ priate time* Yours truly, Chairman of the P.F,B* Administrative Radio Conference RI Doc.