1494 INTERNATIONAL AGREEMENTS OTHER THAN TREATIES [55 STAT. IV EXCHANGE OF BROADCAST PROGRAM SCHEDULES It is recommended that authorized radiobroadcasting organizations of the interested countries, exchange, sufficiently in advance, programs of their broadcasts, especially all those relating to important national or international events. In this case, it is recommended that tele- graph or telephone be utilized, if necessary, to thus assure receipt with sufficient time for appropriate publicity and its retransmission, as far as possible. V STATION IDENTIFICATION FOR S.W. BROADCASTING STATIONS It is recommended that those American countries which wish to do so, identify the distinctive calls of shortwave broadcasting stations by means of letters of the alphabet and numerals. Such identification may consist of two or more letters which may be followed by one or more numbers, indicating the frequency of transmission. If possible, preference should be given to the use of three letters and three or four numerals. In this case, the first two letters will identify the country, the third letter the city or district, and the numerals, the frequency in kilocycles per second, eliminating the final figure. It is further recommended that this identification be transmitted in the English, Spanish, Portuguese and French languages. VI INTERCHANGE OF METEOROLOGICAL INFORMATION. Considering: 1.- That to date it has not been possible to achieve an effective coordination between all the countries of America for the pur- pose of exchanging synoptic meteorological information; 2.- That in order to obtain such a result it is indispensable to coor- dinate meteorological and radioelectric services; it is recommended: a) that, at the time the joint meetings of the Regional III and IV Commissions of Meteorology are held in Washington in 1941, there be included also technical representation of official radioelectric organizations in order to establish a definite Inter-American plan for centralizing and exchanging meteoro- logical reports and other related data; b) that, with six months anticipation, the radioelectric organizations send the forementioned regional commissions information relative to available radiocommunication facilities in accordance with the questionnaire annexed hereto, and also any other data of possible interest in order to guide the preliminary work of the joint meetings; c) that the Government of Chile advise the Regional Commissions III and IV of the above recommendations.
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