63 STAT.] MULTILATERA--TELECOMMUNICATIONS-OCT. 2 , 1947 1803 (Chapter XI, art. 24 RR) (524-529) 524 e) Ability to send correctly and to receive correctly by telephone. 525 f) Detailed knowledge of the Regulations applying to radiocommunications, knowledge of the docu- ments relating to charges for radiocommunica- tions, knowledge of the provisions of the Con- vention for the Safety of Life at Sea which 50 t at 1121. relate to radio, and, in the case of air navigation, knowledge of the special provisions governing the aeronautical fixed, mobile, and radionaviga- tion services. In the latter case, the certificate states that the holder has successfully passed the tests relating to these special provisions. 526 g) Knowledge of the general geography of the world, especially the principal maritime and air naviga- tion routes and the most important telecommuni- cation routes. 527 h) Sufficient knowledge of a language widely used in the international correspondence of the mobile service. Candidates must be able to express themselves in that language in a satisfactory manner both orally and in writing. Each gov- ernment decides for itself the language or lan- guages required. B. Second Class Radiotelegraph Operator's Certificate 528 § 11. The second class certificate is issued to operators who have given proof of the technical and professional knowl- edge and qualifications enumerated below: 529 a) Elementary theoretical and practical knowledge of electricity and of radio, knowledge of the adjustment and practical working of the various types of radiotelegraph and radiotelephone apparatus used in the mobile service, including 81939 0-52-I-T . -- 33
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