Oct. 15, 1947 61 STAT.] CANADA-RADIO BROADCASTING-^OCat1 9 4 7 The Secretary of State to the CanadianAmbassador DEPARTMENT OF STATE WASHINGTON Oct. 15, 1947 EXCELLENCY: I have the honor to refer to your note No. 7 of January 8, 1947, in which you proposed an exchange of notes on the subject of the alloca- tion of channels in the radio frequency band 88 to 108 megacycles, for frequency modulation broadcasting. In this connection, particular importance is attributed in your note to channel assignments for opera- tion in areas adjacent to the border of Canada and the United States, and to the need to prevent undue interference between stations in the respective countries. Your note under reference states that allocation plans for United States frequency modulation broadcasting stations and for Canadian frequency modulation broadcasting stations are described in Appen- dices I and II to an Agreement between the two countries on the sub- ject, and that the channel number system used in these Appendices is in accordance with Appendix III to the same Agreement. This note further states that assignments will normally be made on the basis of omnidirectional antennae but that it is recognized that directional antennae may advantageously be used in certain instances to reduce interference between stations. Moreover, assignments made at points which are more than 250 miles from the nearest point on the border of Canada and the United States are normally to have no international significance and need not be notified except in cases of unusual powers and unusual antenna heights. Where distances less than 250 miles are involved, all assignments shall be notified in the following manner: (1) Notification shall be made by an exchange of documents between the Federal Communications Commission and the Department of Transport. (2) Notifications shall include full information on transmitting an- tenna locations by geographical coordinates, antenna height above average terrain, antenna height above mean sea level, and effective radiated power. In the event an antenna, direc- tional in the horizontal plane, is proposed, the directional pat- tern and other pertinent information shall be submitted. (3) Each country shall have 15 days from the date of notification in which to protest the proposed assignment. (4) If, within the 15 day period prescribed in (3) above, no objec- tion is raised, a notified assignment shall be considered final. Wherever possible assignments made within 250 miles of the border should be in accordance with Appendices I and II. Finally, the same note states that no allocation plans have been adopted as yet for assignment of stations in the band from 88 to 92 megacycles, which has been designated for use by non-commercial 3823 Ante, p. 3800 . Allocation plans. Ante, pp . 3802,3819. Ante, p. 3822 . Notifications of as- signlments. Ante, pp. 3802 ,3819. Band for non-com- mercial educational broadcasting.
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