The GMDSS Radio Maintainer's License (DM) qualifies personnel as GMDSS radio maintainers to perform at-sea repair and maintenance of GMDSS equipment.
Holding the DM license grants full operational authority equivalent to that of the PG and MP license.
The GMDSS Radio Maintainer's License (DM)product includes access to one attempt for each of the following FCC Elements: (1) FCC Element 1, (1) FCC Element 3, and (1) FCC Element 9.
These online exams have a maximum testing time of two hours for each FCC Element.
