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Pass your FCC radio license or FAA mechanic exam.

Plain-English study chapters with diagrams, the complete official question pool with an explanation for every answer, and timed mock exams scored like the real test. Plus a free reference library for working technicians.

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official FCC pool questions, each explained
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diagrams drawn for the courses
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free calculators in the Toolbox
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MROP · Element 1 · Question 1-1A1

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What is a requirement of all marine transmitting apparatus used aboard United States vessels?

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From Chapter 1A: the GMDSS sea areas, one of the diagrams in the course
FCC MROP

Marine Radio Operator Permit - Element 1

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Everything you need to pass FCC Element 1: the full official question pool, plain-English study chapters, and timed practice exams in the real 24-question format.

4 chapters · 144 questions · timed mock exams

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How studying works

  1. Step 1
    Read short chaptersPlain English, with diagrams, exam tips and a check-yourself quiz after every section.
  2. Step 2
    Practice the real questionsThe official pool, chapter by chapter. Every answer comes with an explanation.
  3. Step 3
    Take timed mock examsScored like the real test, with a list of the chapters to review afterwards.

The Toolbox

A free reference library for the bench and the field. No account needed.

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CalculatorsRF, electrical, fiber, radar and flight.35 calculatorsFrequency referenceMarine, aviation, amateur, SAR and more.6 frequency listsQuick reference chartsHardware, wire gauge, coax, codes.11 chart setsTroubleshooting guidesSymptom-to-fix for marine, aviation and RF.7 guidesFormula referenceOhm's law, reactance, dB, radar, antennas.91 formulasGlossaryPlain-English technical definitions.484 terms

From the blog

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Licensing GuidesHow to Get Your FCC Registration Number (FRN)You need an FRN before you can sit any FCC commercial radio exam. It's free and takes about ten minutes. Here's how to get one through the FCC's CORES site.Exam PrepHow to Get Your FCC Marine Radio Operator Permit (MROP)The Marine Radio Operator Permit is one of the easier FCC licenses to get. Here's who needs it, what's on the 24-question exam, how to study, and what happens after you pass.

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