The physics, math, and circuit vocabulary every radio credential assumes. Built so that a lesson in any exam track can point here instead of re-teaching Ohm's law for the fourth time.
14 lessons
Radio Certification Study System
Self-study courseware for FCC and FAA radio certifications. Every lesson is a single sitting of 5–15 minutes, tied to the objectives it covers and the pool questions it answers.
Continue where you left off- Lessons
- 144
- Study minutes
- 1,507
- Pool questions
- 1,431
- Graph nodes
- 2,269
Tracks
Amateur Radio — Technician Class
26/35 to passFCC Element 2. Entry-level US amateur licence: all amateur privileges above 30 MHz plus limited HF. Gateway credential for the VHF/UHF gear already on the bench.
26 lessonspool tech-2026
Amateur Radio — General Class
26/35 to passFCC Element 3. Opens the majority of HF: worldwide voice, digital, and CW operation, with the propagation and antenna theory that go with it.
35 lessonspool gen-2023pool expires in 331 days
Amateur Radio — Amateur Extra Class
37/50 to passFCC Element 4. Full US amateur privileges. The pool is the deepest technical material in the amateur service: transmission lines, Smith charts, digital signal processing, complex impedance, and test equipment.
51 lessonspool extra-2024
No exam, but real rules. Channel plan, power and antenna limits, repeater use, identification, and the FRS/GMRS/MURS boundary that trips up most operators using the handhelds already in the drawer.
5 lessons
Hands-on labs that turn exam abstractions into things you have seen on a screen: spectrum, modulation, filters, antenna resonance, propagation. Every lab names the hardware it needs and offers a no-hardware fallback.
8 lessons
Not a from-scratch Part 107 course — the certificate is already held. This track covers the recurrent-training knowledge areas and the places where drone operations meet radio: airspace and ATC comms, LAANC, aircraft band monitoring, C2 link spectrum, and Remote ID.
5 lessons
Planned and reference tracks
- FCC Commercial — GROL (Elements 1 & 3)planned
General Radiotelephone Operator Licence: the credential required to adjust, maintain, or internally repair licensed transmitters in the maritime, aviation, and international fixed services.
Where to start
- Foundations — the electrical vocabulary every other track assumes. Skip it only if Ohm's law and decibels are already automatic.
- A diagnostic practice exam — 35 questions drawn in the real subelement proportions tells you which modules you can skim.
- The knowledge graph — when a lesson references something you do not hold yet, follow the prerequisite edges backwards.