Section 6
SEC. 6. The Secretary of Public Works and Communications, on reasonable notice to the grantee, may at any time change, or 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: (1) whenever in his judgment such frequencies and wave lengths have been used, or there is danger that they will be used by the grantee to impair electrical communications, or stifle competition, or to obtain a monopoly in electrical communication or to secure unreasonable rates for such communications, or to violate otherwise the laws or public policy of the Philippine Republic; (2) whenever in his judgment the public interests of the Republic 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; and (3) whenever in his judgment, for any reason, the public interests of the Philippines so require.