Exceptions to the Table may be made by the IRAC after careful consideration to avoid harmful interference and to ensure compliance with the ITU Radio Regulations. For the use of frequencies by Government radio stations outside the United States and Possessions, Government agencies shall be guided insofar as practicable by the ITU Table of Frequency Allocations and, where applicable, by the authority of the host government. Maxi- mum practicable effort should be made to avoid the possibility of harmful interference to other authorized U.S. operations. If harmful interference is considered likely, it is incumbent upon the agency conducting the operation to coordinate with other U.S. Flag users, as provided for in Section 8.3.11. Primary and permitted services have equal rights, except that, in the preparation of fre- quency plans, the primary service, as compared with the permitted service, shall have prior choice of frequencies.
Secondary services are on a non-interference basis to the primary and permitted services.
For example, an allocation which is added in this area or in this country to the service or services which are indicated in the Table. For example, an allocation which replaces, in this area or in this country, the allocation indicated in the Table. An allocation or a footnote to the Government Table denoting relative status between radio services automatically applies to each assignment in the band to which the footnote or allocation pertains, unless at the time of a particular frequency assignment action a different provision is decided upon for the assignment concerned. A priority note reflecting the same provisions as an allocation or an applicable footnote to the Government Table is redundant and shall not be applied to frequency assignments. Column 1 indicates the national band limits.