Page:United States Statutes at Large Volume 63 Part 2.djvu/692

 1989 63 STAT. I IMLTILATERAL-TELEC(OMMUINICATIONS-OCT. 2, 1947 (Apn. 3 RR) Frequency Bands and Cataorie of Stations O. FmSo 10 600 0. rsm 60 5o 10 600 Mels. Tolernes (in %) applicable until January lst 1953 to transmitters now in use and those to be installed before January lIt 1950 2 0.75 Tolerances (in %) applicable: -to new trans- mitters installed after January 1st 1950; - to all trans- mitters after January lst 1953 3 0.75 Until C.C .I .R . opinion is vailable, no closer tolerances can be speed fed for this coumn. Notes Referrig to Table of Tolerancm I) It is recognised that certain countries will encounter dificulties in fitting, prior to 1953, all their ships with equipment which will satisfy the indiated tolerance; however, it i requested that these countries complete the neeesary onversion a soon maposible. ) The frequency tolerance of 0.02% is maintained temporarily for fixed station trummitters now in operation using a power between 200 and 500 watts. a) For this category, the final date of January 1st 1953, is extended until the date when the Radio Regulations of the next Conference are put into force. ) In this band and for this category, it is recognised that certain countries ae not ore that their equipment can satisfy a stiicter frequency tolerance than that fixed for the 30-100 Mc/s band; however, theme countries will endeavour to satisfy the tolerance for the band 100-500 Me/. s) In bands E and F it is recognised that there ar in service in category 4 puls tr nmitters which cannot meet toleranes closer than 0.5%. born the cmmencment of an emisson. This provision, however, is applicable only to transmitters in service before January let, 1950 and until the replacement of these tranmitter by modern equipment, and only in exclusive maritime mobile bknds, and excepting such parts of these bands as ae reserved for ship radiotelephony. Thereafter the frequency tolerance specified bahe adhered to during the whole period of an emimai 1 .I
 * Frequeney deviation are to be meamisrd over a period not exceeding ten minutes

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