54 STAT.] MULTILATALTERL-TLECOMMUNICATION-APR. 8 , 1938 [239] (g) Knowledge of the general geography of the world, particu- larly the principal navigation lines (maritime or aerial, according to the class of certificate) and the most im- portant telecommunication channels. [240] (h) If necessary, knowledge of one language very widely used in the international correspondence of the mobile service. Candidates must be capable of expressing themselves in a suitable manner, both verbally and in writing. Each government shall determine itself which language or languages will be required. C. SECOND-CLASS RADIOTELEGRAPH OPERATOR'S CERTIFICATE [241] §5. The second-class certificate shall be issued to operators who s-eond-cls certif- have shown that they possess the professional and technical qualifica- tions enumerated below: [242] (a) Elementary theoretical and practical knowledge of elec- tricity, radiotelegraphy, and radiotelephony, as well as knowledge of the adjustment and practical operation of the types of apparatus used in the radiotelegraph and radiotelephone mobile service, including apparatus for radio direction-finding and the taking of radio direction- finding bearings. [243] (b) Elementary theoretical and practical knowledge of the operation of accessory apparatus, such as motor-gener- ator sets, storage batteries, et cetera, used in the operation and adjustment of the apparatus mentioned in (a) [No. 242]. [244] (c) Practical knowledge sufficient for making minor repairs in case of damage to the apparatus. [245] (d) Ability to transmit correctly and to receive correctly, by ear, code groups (mixtures of letters, figures, and punc- tuation 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. The duration of each sending and receiving test shall, as a rule, be 5 minutes. [246] (e) Ability to perform correct telephone transmission and correct telephone reception.' [247] (f) 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, knowl- edge 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. [248] (g) Knowledge of the general geography of the world, particu- larly the principal lines of navigation (maritime or aerial, according to the class of certificate) and the most impor- tant telecommunication channels. [251] 1 Except as provided in footnote 1 concerning article 10, 13 (4) [No. 2311. 1483
�
