Page:United States Statutes at Large Volume 49 Part 2.djvu/455

 TELECOMMUNICATION CONVENTION. DECEMBER 9, 1932. 2471 [oa) § 8. (1) The use of type-B waves shall be forbidden on all Type-B waves. frequencies, except the following: 375 kc (800 m) 410 kc (730 m) 425 kc (705 m) 454 kc (660 m) 500 kc (600 m) 1,364 kc (220 m)· [94] (2) No new installation of transmitters of type-B waves may be made on ships or aircraft, except when these transmitters, working at full power, use less than 300 watts measured at the input of the audiofrequency supply transformer. [95] (3) The use of type-B waves on all frequencies shall be forbidden, beginning January 1, 1940, except for transmitters meeting the power requirements stated in subparagraph (2) above. [96] (4) No new installation of type-B -wave transmitters may be made in a land or fixed station. The waves of this type shall be forbidden in all land stations beginning January 1, 1935. [91] (5) The administrations shall endeavor to abandon type- B waves, other than the 500-kc (600-m) wave, as soon as possible. (98) § 9. The use of type-AI waves only shall be authorized between 100 and 160 kc (3,000 and 1,875 m); the only exception to this rule shall be for type-A2 waves which may be used in the band 100 to 125 kc (3,000 to 2,400 m) for time signals exclusively. [99] § 10 In the band 460 to 550 kc (652 to 545 m) no type of emis- Fre'.luenc;ies interler- • Ing wltb dIstress, etc., sion capable of rendering inoperative the distress, alarm, safety, or signals. urgent signals sent on 500 kc (600 m) shall be authorized. POO] § 11. (1) Intheband325to345kc(923to870m),no typeof emission capable of rendering inoperative distress, safety, or urgent signals shall be authorized. POl] (2) This rule shall not apply to regions in which special agreements provide othenise. [102) § 12 (1) In principle any station carrying on a service be- rse of more tban ., one frequency. tween fixed points on a wave with a frequency below 110 kc (wave- lengths above 2,727 m) must use only one frequency, chosen from the bands allocated to the said service (§ 7 above), for each of its trans- mitters capable of simultaneous operation. (103] (2) A station shall not be permitted to use a frequency freTarmstroBot (talk) 15:12, 19 November 2014 (UTC)nnautborUed other than that allocated as stated above, for a service between fixed points. • See footnote (10) to the allocation table.