The Role of DM License Holders in Ensuring Maritime Communication Safety
What is the GMDSS Radio Maintainer's License (DM)?
The GMDSS Radio Maintainer's License (DM) certifies personnel to perform repair and maintenance of GMDSS equipment at sea. This license authorizes the holder to ensure the functionality and reliability of communication systems onboard vessels. It also confers the operating authority of both the General Radiotelephone Operator License (PG) and the Marine Radio Operator Permit (MP), allowing for a broad range of communication responsibilities within the GMDSS framework.
What does DM stand for?
The DM code is used to refer to the GMDSS Radio Maintainer's License in the FCC's official documentation.
Which element exam must I pass for the GMDSS Radio Operator/Maintainer License?
To obtain the GMDSS Radio Maintainer's License (DM), you must pass Element 1, 3, and 9, which are the written exams that cover the requirements for the license.
In addition to the passing of the correct element exams, you must...
Be a legal resident of (or otherwise eligible for employment in) the United States
Be able to receive and transmit spoken messages in English
