as provided in the Radio Regulations and the appropriate Articles and Annexes of these Final Acts." Article 4 is entitled "Procedure for modifications to the Plan." Noteworthy in this complex article is the fact that the term "modification" covers the inclusion or cancellation of a frequency assignment. Annex 10, entitled "Orbital Position Limitations," provides detail for the application of Article 4 in achieving modifications of the "Plan." Member States are to observe the following criteria in respect to limitations on orbital positions: 1. No broadcasting-satellite serving an area in Region 1 and using a frequency in the band 11.7 - 12.2 GHz shall occupy a nominal orbital position further West than 37°W or further East than 146°E. 2. Any new nominal orbital position in the Plan in the range of orbital arc between 37°W and 10°E associated with a new assignment, or resulting from a modification of an assignment in the Plan, shall be coincident with, or within 1° to the East of, a nominal orbital position in the Plan at the date of entry into force of the Final Acts. Annex 10 also takes into account the use of a new nominal orbital position not coincident with any nominal orbital position in the "Plan" at the date of entry into force of the Final Acts. Such a use would be associated with a reduction in orbital activity on the part of the space resource State. Article 5 deals with giving notice to the IFRB of frequency assignments for recordation in the Master Register for Broadcasting- Satellite Service in Regions 1 and 3. The notice must reach the IFRB not earlier than three years before the date on which the assignment is to be brought into use and not later than 90 days before that date. The Article also makes provision for the cancellation of entries in the Master Register.
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