M. NAKAGAMI pointed out that they had still to consider the Addendum to Annex 2 of the Report of the Second Meeting submitted by Subcommittee B. He asked if the Chairman of that Subcommittee still wished to make any remarks on the subject. The Chairman, CAPTAIN HOOPER, observed that at the last session of Subcommittee B it had been found that there was not sufficient time to discuss the question of shared bands. However, it was desirable not to forget these bands, because it was very important that traffic in these bands should be improved in the future. For this reason, he had been asked to make a proposal on this question. Captain Hooper pointed out that it was owing to a mistake that the proposal in question had already appeared in the final text of the document relating to Topics 7, 8 and 14. M. NAKAGAMI asked if there were any observations. The proposal was supported by several delegations, amongst others, Japan, France and the Netherlands. The proposal was adopted. The CHAIRMAN asked if there were any other remarks. CAPTAIN HOOPER as Chairman of Subcommittee B asked that the following question should be placed on the list of questions not settled, to be discussed at the second meeting of the C. C. I. Radio: The study of methods to be adopted to reduce interference in the bands shared by fixed and mobile services above 6,000 kc/s. No objection being raised, this proposal was adopted. M. PFEUFFER (Austria) asked that the following question should also be discussed at the next meeting of the C. C. I. Radio: Study of technical possibilities of reducing the frequency-band occupied by a transmitter, by the partial suppression of the frequency-band transmitted, (that is, for instance, the emission of a single side-band only, or of a side-band and the carrier wave) for various types of transmission and types of service. The CHAIRMAN asked if there were any objections to this proposal. This not being the case, the proposal was adopted. The CHAIRMAN asked if anyone wished to present any further ob servations. CAPTAIN HOOPER replied that there were no more observations to be made and that the work of Subcommittee B was thus terminated. In closing the last session of the Committee on Collaboration the CHAIRMAN desired to say a few words to the delegates. The problem which had been submitted to them was very difficult of solution, but very interesting to radio technicians. The solution of this problem was of great importance from the point of view of doing away with interference and of the progress of radio communication. If they had reached an agreement satisfactory to all, this was thanks to the spirit of harmony and cooperation which had not ceased to reign among the delegates, and he desired, in that place, to thank them warmly. MM. JOLLIFFE and VÖLTER had worked assiduously from morning to evening in preparing documents and he suggested that they should congratulate them with applause. CAPTAIN HOOPER, expressing the views of all, said that the Committee had much appreciated the cordial and efficient manner in which the Chairman had directed the work of the Committee. (Applause.) JOLLIFFE VÖLTER Seen: T. NAKAGAMI Reporters F. REPORTS OF THE COMMITTEE ON EXPLOITATION FIRST MEETING OF THE COMMITTEE, SEPTEMBER 23, 1929 The meeting began at 9 a. m. under the chairmanship of COLONEL LEE. The officers of the Committee were as follows: Chairman: Colonel Lee (Great Britain) The CHAIRMAN reminded the members that the Committee had to deal with Topics 9, 12, 13, 14, 15 and 16 of the C. C. I. Radio program. At the request of the German Delegation, Topic 13 was left to the end. Topic 9 COLONEL LEE stated that Great Britain had prepared on this subject a technical memorandum (Proposal 12) giving the results of experiments in that country. He would like to know the results obtained in other countries. The British Delegation did not wish for precise rules on the elimination of transmissions not essential to communications, because it was difficult to fix the power of transmissions to be suppressed, especially in the case of short waves; in this case, in fact, a few watts were sufficient to interfere with another transmission. COMMANDANT CAROUR (French Equatorial Africa) agreed that elimination of parasitic transmissions should be recommended; he also asked that no precise rule should be imposed. MAJOR GENERAL GIBBS (U. S. A.) said that the American Delegation agreed. The CHAIRMAN noted that there was agreement on the principle of fixing no rules. COLONEL ISHII (Japan) agreed with the Chairman, but thought that Proposals 44 and 67 (Chapter VII, Section 1) should be discussed. CAPTAIN ECKERSLEY (U. I. R.) said that the U. I. R. had proposed a precise rule in Proposal 44 (power of the harmonic to be 2 per cent at most). He thought that wireless stations had harmonics which much interfered with broadcasting stations. An exchange of views took place between Captain Eckersley and Dr. Jolliffe. The CHAIRMAN reminded members that, before discussing the rules to be laid down, it was indispensable that the Committee should make its view clear and decide whether it wished for rules or not. The Committee was against any rules. CAPTAIN ECKERSLEY drew the Committee's attention to the distribution of wave-lengths mentioned in Proposal 44. The CHAIRMAN replied that, in Topic 9, the allotment of wavelengths was not referred to. Topic 12 The CHAIRMAN proposed that consideration of this point should begin with Proposal 63 and asked if Germany had a declaration to make. M. MÜNCH (Germany) reminded members that the Prague Conference had only recommended that the C. C. I. Radio should determine the short waves to be allotted to air services. The German Delegation, therefore, considered that the C. C. I. Radio had not to deal with long waves, but only with short waves for air services. M. STRNAD (Czechoslovakia) read the final protocol of Prague, which recommended the C. C. I. Radio to fix on short waves for air services. COLONEL LEE (Great Britain) pointed out, as head of the British Delegation, that the C. C. I. Radio was a technical committee and could not allot wave-lengths. It was for the administrations of each country to notify the International Bureau of the Telegraph Union of the wave-lengths which they were using. The C. C. I. Radio must only decide whether the wave-lengths used were suitable or not for the service required. MAJOR GENERAL GIBBS (U. S. A.) also agreed. The C. C. I. Radio was solely technical; it must not allot wave-lengths, but say whether those in use were adequate or not for the purpose to be attained. COMMANDANT CAROUR (French Equatorial Africa) agreed; the C. C. I. Radio was not competent to fix wave-lengths. M. MÜNCH (Germany) agreed; but it was necessary to point out that short waves were necessary for the air services for long-distance communications. M. BRAILLARD (U. I. R.) also thought that the C. C. I. Radio could not allot wave-lengths. It must, however, prepare for the Madrid Conference. He noted that the Washington Conference had, as regards wavelengths, accepted existing situations. Now, it was undeniable that all was not perfect. Broadcasting stations in particular were not treated as they should be. The CHAIRMAN ̧pointed out that they were concerned solely with short waves for air services. LIEUT. DURRANT (Great Britain) drew attention to the importance of short waves for airplane and dirigible long-distance journeys. MR. LEUTERITZ (U. S. A.) agreed with Germany to allot frequencies above 6,000 kc/s to the air services. Below 6,000 kc/s it was necessary to conclude local agreements. The CHAIRMAN asked whether the Committee was in favor of reserving for the air services the wave-lengths fixed by the Twentyseventh International Air Conference of The Hague. M. GUIBERT (France) pointed out that the short waves at present used by the air services in Europe gave satisfaction. He asked that they should be maintained until the Madrid Conference. MR. LEUTERITZ (U. S. A.) said that the report should give clearly their views on the question of wave-lengths for the air services. MAJOR GENERAL GIBBS (U. S. A.) would prefer that no table of wave-lengths should be made. COLONEL LEE (Great Britain) remarked that this table concerned Europe alone. It was a local agreement. MAJOR GENERAL GIBBS (U. S. A.) agreed that the present airservice waves were suitable for Europe. M. NUSSBAUM (Switzerland), after a remark in regard to the Washington Regulations, proposed the following motion: The C. C. I. Radio expresses the opinion that it is not competent to decide the question whether the air-service waves are suitable for that service or not. It merely notes that the waves in question were chosen in the bands reserved for these services. It expresses the opinion that the Washington Conference did not set up any body for the allotment of waves, but that, in the present case, Article 5, Paragraph 1, of the Washington General Regulations is applicable. This motion was carried. SECOND MEETING OF THE COMMITTEE, SEPTEMBER 24, 1929 The meeting was called to order by COLONEL LEE, the Chairman, at 2 p. m. The CHAIRMAN reminded members that, at the request of the German Delegation, discussion on Topic 13 of the program was post |