SEC. 3. The grantee, by the acceptance of this franchise, agrees to do, perform, and accept the following:
(a) Within one year from the date of acceptance of this franchise to have in satisfactory operation an efficient radio-telephonic broadcasting station of sufficient power to reach all points in the Philippine Islands under normal static conditions.
(b) Within one year from the date of the acceptance of this franchise to have in satisfactory operation one or more radio-telegraphic stations having an effective range under normal static conditions of not less than one thousand five hundred miles.
(c) Within one year from the date of the acceptance of this franchise to provide efficient receiving and transmitting apparatus and service, adequate to meet the reasonable public demand for radio-telegraphic commercial service.
(d) To improve and augment its apparatus in conformity with the progress of radio science and practice.
(e) To recognize the jurisdiction of the Government of the Philippine Islands, through its duly empowered agencies, to regulate the charges and rates for its services, and to regulate and at any time to inspect the books of accounts of the grantee.
(f) To recognize the jurisdiction of the Government of the Philippine Islands to require that an application be submitted and approved before installing any radio station, and to determine by general regulations the wave lengths which shall be used by the different types of service effective within the Philippine Islands, so long as such regulations shall specify the exclusive use by the grantee of wave lengths for each of its services, commercial radio- telegraphic, commercial radio-telephonic, and broadcasting, respectively, which wave lengths shall be sufficiently inclusive to reasonably preclude interference by other stations and so as to permit expansion of the grantee's services.