Section 6
SEC. 6. The Secretary of Commerce and Industry, on reasonable notice to the grantee, may at any time, change, cancel, or modify, in whole or in part, any or all of the allotments of frequencies or wave lengths to be used. He may take such action under the following circumstances: (1) Whenever in his judgment such frequencies and wave lengths to be used, or there is danger that they will be used by the grantee to impair electrical communication, or stifle competition, or to obtain a monopoly in electrical communication or to secure unreasonable rates for such communication, or otherwise to violate the laws or public policy of the Philippines; (2) Whenever in his judgment the public interests of the Philippines require that such frequencies or wave lengths should be used for other purposes than those of the grantee, either by the Government of the Philippines or by other individuals or corporations licensed by it; (3) Whenever in his judgment for any other reason the public interests and welfare of the Philippines require such a change or modification in whole or in part.