Question 1

What is the FCC GROL and who needs it?

Accepted Answer

The General Radiotelephone Operator License (GROL) is a commercial FCC license required to adjust, maintain or repair certain transmitters (e.g., maritime, aviation). You earn it by passing FCC Elements 1 and 3 (plus Element 8 for a radar endorsement). It does not expire.

Question 2

Do I need a license to design RF systems?

Accepted Answer

To operate or maintain transmitters you may need an FCC commercial license; to design and stamp engineered communications systems you need a PE (Electrical). Many RF specialists also hold iNARTE or ETA certifications, which are professional credentials rather than government licenses.

Question 3

Are FCC exams open book?

Accepted Answer

No. FCC commercial and amateur exams are closed-book, but the questions are drawn from published public question pools, so you can study the exact item bank in advance.

Question 4

What certification is best for DAS / in-building wireless?

Accepted Answer

ETA and iNARTE offer RF and distributed-antenna-system (DAS) certifications aimed at in-building and public-safety wireless. For public-safety radio coverage specifically, look for credentials tied to NFPA/IFC in-building coverage requirements.

FCC Amateur Radio License (Technician / General / Extra)