63S STAT.] MULTILATERAL-ITELECOMMUNICATIONS--OCT. 2, 1947 (Chapter VII, art. 1 R) (412-416) CHAPTER VII Identification of stations ARTICLE 19 Call Signs Section I. Allocation and Notification 412 § 1. (1) All stations open to the international service of pub- lic correspondence, all amateur stations, and other stations which are capable of causing harmful interference beyond the boundaries of the country to which they belong, must have call signs from the international series assigned to each country in the table given in 419. 413 (2) However, it is not compulsory to assign call signs from the international series to stations which are easily iden- tified by other means and whose signals of identification or characteristics of emission are published in international documents. 414 § 2. (1) When a fixed station uses more than one frequency in the international service, each frequency shall be identified by a separate call sign used solely for this frequency. 415 (2) When a broadcasting station uses more than one frequency in the international service, each frequency shall be identified by a separate call sign used solely for this frequency or by some other appropriate means, such as announcing the name of the place and frequency used. 416 (3) When a land station uses more than one frequency, such frequencies may, if desired, be identified by separate call Sido 1761
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