3800 INTERNATIONAL AGREEMENTS OTHER THAN TREATIES [61 STAT. January 8. October Agreement between the United States of America and Canada respecting 15, 19i7? [T.i.A.S. 7I the allocation of FM channels in radio broadcasting. Effected by exchange of notes signed at Washington January 8 and October 15, 1947; entered into force October 15, 1947. The Canadian Ambassador to the Secretary of State No. 7 CANADIAN EMBASSY AMBASSADE DU CANADA JANUARY 8, 1947. Post, pp. 3802 ,3819. Post, p . 3822. SIR, With reference to recent discussions between representatives of the Government of Canada and the Government of the United States con- cerning the use of the 88 to 108 megacycle frequency band for fre- quency modulation broadcasting, I have the honour to propose an exchange of notes concerning the allocation of channels with particular reference to assignments in those areas adjacent to the border of Canada and the United States in order to prevent undue interference between stations in the respective countries. Allocation plans for United States Frequency Modulation Broad- casting Stations and for Canadian Frequency Modulation Broad- casting Stations are described in Appendices I and II. The channel number system used in these appendices is in accordance with Appendix III. Assignments will normally be made on the basis of omni-directional antennae but it is recognized that directional antennae may advan- tageously be used in certain instances to reduce interference between stations. Assignments made at points which are more than 250 miles from the nearest point on the border of Canada and the United States will normally 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 antenna 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 pattern 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.
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