| Act No. 3846, as amended | November 11, 1931 | An Act Providing for the Regulation Of Radio Stations and Radio Communications in the Philippine Islands, and for Other Purposes |
| NTC Memorandum Circular No. 03-2-82 | February 2, 1982 | Identification of Amateur Club Radio Stations |
| MOTC Ministry Circular No. 82-077 | October 20, 1982 | Revised Regulations governing the Amateur Radio Service |
| NTC Memorandum Circular No. 14-11-82 | | Implementation of the Revised Amateur Regulations |
| NTC Memorandum Circular No. 01-01-84 | | Guidelines for the Registration of Amateur Clubs and Formation of an Interim Amateur Radio Advisory Council |
| MOTC Memorandum Circular No. 07-04-84 | | Lifetime Amateur Radio Station License |
| NTC Memorandum Circular No. 05-06-85 | | Recognition of Philippine Amateur Radio Association |
| NTC Memorandum Circular No. 07-08-86 | July 15, 1986 | Regulations, Guidelines and Procedures Governing the Installation and Operation of Amateur Repeaters |
| MOTC Ministry Circular No. 87-174 | February 3, 1987 | Revised Amateur Radio Regulations |
| NTC Memorandum Circular No. 02-03-87 | | Implementation of the Revised Amateur Regulations |
| NTC Memorandum Circular No. 01-03-88 | | Procedure in the Purchase of Radio Transceivers
from Abroad |
| NTC Memorandum Circular No. 02-03-90 | | Amending Memorandum Circular No. 02-03-87, series of 1987 |
| NTC Memorandum Circular No. 04-08-90 | February 6, 1990 | Sub-Allocation to Frequency Band 430-440 MHz |
| NTC Memorandum Circular No. 10-05-90 | | Sub-Allocation of Frequency Band 430-440 MHz |
| NTC Memorandum Circular No. 7-8-91 | | Reiteration of PARA Indorsement |
| NTC Memorandum Circular No. 9-4-94 | April 15, 1994 | Additional Guidelines for the Renewal of Amateur License and Application for Amateur Radio Examination |
| NTC Memorandum Circular No. 9-4-94A | November 14, 1994 | Amending Memorandum Circular 9-4-94 of Additional Guidelines for the Renewal of Amateur Radio License and Application for Amateur Radio Examination. |
| NTC Memorandum Circular No. 03-01-95 | January 16, 1995 | Sale, Importation and Use of Amateur Radio Equipment |
| NTC Memorandum Circular No. 6-7-97 | July 30, 1997 | Further amending Memorandum Circular 9-4-94A  To strictly implement the Amateur Radio Regulations thereby encouraging further the application of amateur principles in the country, Memorandum Circular 9-4-94A is hereby amended whereby the required proof of involvement in amateur radio activities before the renewal of any Amateur License and the required proof of attendance to an orientation seminar before taking amateur class 'C' and/or 'D' examination, shall be endorsed by an NTC accredited Amateur Radio Club. |
| NTC Memorandum Circular No. 02-02-98 | February 10, 1998 | Extension of the Renewal of the Radio Station License Using Amateur Equipment Outside the Amateur Service Band |
| NTC Memorandum Circular No. 02-01-2000 | January 13, 2000 | Extending the Renewal of the Radio Station LLicense Using Amateur Equipment to Members of the Civil Groups |
| NTC Memorandum Circular No. 08-08-2003 | August 4, 2003 | Amending Section II- 2.2.1, of Memorandum Circular No. 02-03-87, Implementation of the Revised Amateur Regulations |
| DOTC Department Circular No. 2003-02 | December 5, 2003 | Amending Section IV-4.4.1 of Ministry Circular No. 87-174, the Revised Amateur Radio Regulations |
| DOTC Department Order No. 2004-40 | August 4, 2004 | Amending Department Order No. 2003-02  Code Test shall be required for Class A only and the Speed Requirement shall be 5 wpm. |
| NTC Memorandum Circular No. 17-11-2004 | November 9, 2004 | Amending Section 1-1.1 of Memorandum Circular No. 7-04-84, Lifetime Amateur Radio Station License Applicant mus be at least 60 years of age. |
| NTC Memorandum Circular No. 01-06-2011 | June 13, 2011 | Reconstitution of the new Amateur Radio Consultative Panel (ARCP) |
| NTC Memorandum Circular No. 03-08-2012 | August 29, 2012 | Revised Amateur Radio Regulations |
| NTC Memorandum Order No. 05-09-2012 | September 6, 2012 | Emergency Radio Communications Protocol for Radio Volunteers (NTC Task Force Bayanihan) |
| NTC Office Order No. 108-12-2012 | December 14, 2012 | Guidelines in the Assignment of Call Sign in the Amateur Radio Service |
| NTC Memorandum Circular No. 03-06-2014 | May 30, 2014 | Reconstituting the Amateur Radio Consultative Panel (ARCP) |
| NTC Office Order No. 81-08-2015 | | Clarification of Morse Code Requirements for Amateur Examination and Licensing |
| NTC Office Order No. 75-05-2016 | May 19, 2016 | Guidelines in the Application for Amateur Radio Examination and Issuance of Amateur Radio Station License (ARSL) / Radio Amateur Operator Certificate (RAOC) |
| NTC Office Order No. 76-05-2016 | May 19, 2016 | Guidelines in the Issuance of Special Permits for the Use of Vanity Call Signs and Special Event Call Signs in the Amateur Radio Service |
| NTC Office Order No. 183-12-2016 | December 2, 2016 | Guidelines in the Additional Allocation of Prefixes in the Amateur Radio Service |
| NTC Memorandum Circular No. 04-06-2017 | June 21, 2017 | Allocation of the Frequency Band, 5351.5-5366.5 KHz, for Amateur Radio Service on Secondary Basis |
| NTC Memorandum Circular No. 02-06-2019 | June 11, 2019 | Frequency Band Allocation and Types of Emissions for Amateur Radio Service |
| NTC Memorandum Order No. 03-03-2020 | March 18, 2020 | Extending the Validity of NTC Issued Permits, Certificates and Licenses during the COVID-19 Enhanced Community Quarantine |
