SSB installation, installers and interference

[Cpt Pat]

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.

73, N7BMW

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).

[Emouchet]

LEDs does not need much current to light on.
And they made great little small antennas. So, yes, most will turned on when xmiting.

I experimented the same issues.