Originally Posted by stormalong
I think you mean GROL - General Radiotelephons Operator license
? This is the license
required to work
on marine SSB
installations and other non ham transmitting equipment
Technically, no. A GMDSS Maintainer license requires passing all the tests for a GROL license, plus additional elements pertaining to marine
RF systems. The GMDSS Operator license is required on SOLAS ships and covers operations of GMDSS radio communications
My original commercial
license was issued as a "First Class" license in 1973. I worked for a decade as a broadcast engineer
under that license. The FCC changed the name of that license, and today, the FCC calls the commercial
license by the charmless name of: "PG - General Radiotelephone Operator License" (GROL). I hold that license, but also a separate: "DB - GMDSS Radio Operator/Maintainer License" (which is a combined operator and maintainer license requiring two exams) that requires passing a extra set of written exams over and above those required for the GROL commercial license.
The GMDSS license (https://wireless2.fcc.gov/UlsApp/UlsSearch/license.jsp?licKey=3069888) is a separate license "above" the requirements for the GROL commercial license (https://wireless2.fcc.gov/UlsApp/UlsSearch/license.jsp?licKey=2092710).