The first radio regulatory office was known as the Radio Construction and Maintenance Section under the Telegraph Division of the Bureau of Posts. This section was charged with the enforcement of radio laws and regulations, particularly the provisions of Act No. 3396, known as the Ship Radio Station Law which was enacted on December 5, 1927. This law provides for the installations of radio obligatory for ships of Philippine register to protect life and property at sea.
On November 11, 1931, the Philippine Legislature enacted Act No. 3846, known as the Radio Control Law of the Philippines.Section 8 of the law provides that the "Secretary of Commerce and Communications is hereby authorized to create a Radio Regulation Section, Division or Office which shall take charge of carrying out the provisions of this Act and the regulations prescribed by him, to any bureau or office of his Department, subject to his general supervision and control." Thus, the Radio Control Division in the Bureau of Posts was created under the Secretary of Commerce and Communications.
In 1939, the Department of National Defense was organized pursuant to Executive Order No. 230. It was realized then that the functions of supervising and regulating the establishment and operation of all radio stations in the country were important to national defense and security. Consequently, the Radio Control Division was transferred to the Department of National Defence.
Pursuant to Executive Order No. 94, series of 1947, the Department of Commerce and Industry was created. The Radio Control Division was again transferred from the Department of National Defense to the Department of Commerce and Industry. The reason for the transfer was that in time of peace, the function of radio regulations was a vital factor in the promotion of commerce and industry and in the economic development of the country.
On January 1, 1951, by virtue of the provisions of Executive Order No. 392, the Radio Control Board were transferred to the Department of Public Works and Communications. Actually, The Radio Control Division and the Radio Control Board were two distinct agencies with separate functions. The Division was charged with the supervision and regulation of the establishment and operation of all radio stations in the country. On the other hand, the Board implemented the provisions of the Radio Broadcasting Law, Act No. 3997, regarding the administration of the national radio broadcasting fund derived from radio receiver registration fees collected by the BIR, and the purchase, distribution, and installation of radio receivers to fourth and fifth class municipalities, municipal districts, barrios and selected government institutions. In the Department of Public Works and Communications, the Radio Control Division was under the supervision of the Radio Control Board.
In 1956, R.A. No. 1476 was enacted, abolishing the radio receiver registration fees in effect also abolished the Radio Control Board. The Radio Control Division remained and continued to fuction under the Office of the Secretary of Public Works and Communications.
On August 23, 1962, Department Order No. 51 was issued by the Secretary, Department of Public Works and Communications, changing the name of the Radio Control Division to Radio Control Office. As provided in the Integrated
Reorganization Plan of 1972, the Radio Control Office was retained and assumed the functions relative to the supervision and enforcement of policies, rules and regulations involving telecommunications. The Office, which was later named on July 1, 1974, as the Telecommunications Control Bureau, was headed by a Director who was assisted by an Assistant Director. The Office had four divisions and district offices, the number and locations of which were determined on the basis of necessity and effectiveness of the service.