Page:United States Statutes at Large Volume 49 Part 2.djvu/469

 TELECOMMUNICATION CONVENTION. DECEMBER 9, 1932. 2485 (112] (d) Ability to transmit correctly and to receive correctly by ear code groups (mixtures of letters, figures, and punctuation marks) at a speed of 20 (twenty) groups per minute, and of text in plain language, at a speed of 25 (twenty-five) words per minute. Each code group must contain 5 characters, each figure or punctuation mark counting as 2 characters. The average word of the text in plain language should contain 5 characters. [163] (e) Ability to perform correct telephone transmission and correct telephone reception. [164] (j) Detailed knowledge of the Regulations applying to the exchange of radio communications, knowledge of documents relative to charges for radio communications, knowledge of the radio- telegraph part of the Convention for the Safety of Life at Sea, and, in the case of aerial navigation, knowledge of the special provisions regulating the radio service of aerial navigation. In that case, the certificate shall stipulate that the holder has successfully passed the examinations dealing with these provisions. [,65] (g) Knowledge of the general geography of the world, particularly the principal navigation lines (maritime or aerial, accord- ing to the class of certificate) and the most important telecommunica- tion channels. C. SECOND-CLASS RADIOTELEGRAPH OPERATOR'S CERTIFICATE p6G] § 5. The second-class certificate shall be issued to operators who l'~If:.~'Ond-class have shown that they possess the professional and technical qualifica- tions enumerated below: [l6i] (a) Elementary theoretical and practical knowledge of electricity and radiotelegraphy, as well as knowledge of the adjust- ment and practical operation of the types of apparatus used in the radiotelegraph mobile service. (168] (b) Elementary theoretical and practical knowledge of the operation of accessory apparatus, such as motor-generator sets, storage batteries, etc., used in the operation and adjustment of the apparatus mentioned in (a). (1691 (c) Practical knowledge sufficient for making minor repairs in case of damage to the apparatus. (170] (d) Ability to transmit correctly and to receive correctly by ear code groups (mixtures of letters, figures, and punctuation marks) at a speed of 16 (sixteen) groups per minute. Each code group must contain 5 characters, each figure or punctuation mark counting as 2 characters. [In] (e) Knowledge of the Regulations applying to the exchange of radio communications, knowledge of documents relative to charges for radio communications, knowledge of the radiotelegraph part of the Convention for the Safety of Life at Sea, and, in the case of aerial navigation, knowledge of the special provisions regulating certifi-