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Topic Reference Guide
A no-quiz walk through all ten subelements, plus the segments Extra adds to your privileges and the formulas worth memorizing outright — resonance and Q, complex impedance, op-amp gain, Q-section matching, dBi versus dBd. Start here before testing yourself.
Open Reference GuidePractice Test — Set 1
150 questions proportionally sampled from every subelement (E1–E0), sourced verbatim from the official pool. Score 80% or higher to unlock a printable practice certificate.
Start Set 1Practice Test — Set 2
150 more questions with zero overlap with Set 1. Together, Sets 1 and 2 cover 300 distinct questions from the pool — use this one for a second, fresh pass at the material.
Start Set 2Practice Test — Set 3
150 further questions, again with no overlap. Sets 1–3 together cover 450 of the pool's 571 non-figure questions.
Start Set 3Practice Test — Set 4
The remaining 121 non-figure questions left after Sets 1–3. Combined, Sets 1–4 cover all 571 active questions that don't reference a diagram.
Start Set 4Practice Test — Set 5: The Figures
Every figure-based question in the pool, gathered in one place. The Extra pool leans on diagrams far more than the lower classes do — ten of them, covering the impedance plane, the FET, diode and logic-gate symbol charts, three circuit schematics, two radiation-pattern plots, and the Smith chart. Each question shows its diagram right on the card, so you can learn to read them rather than memorize answer letters.
Start Set 5The 2024–2028 Element 4 pool was released with 603 questions. NCVEC has since withdrawn four of them — E2A13, E4D05, E6D07 and E9E10 — across four rounds of errata, mostly because the questions turned out to have more than one defensible answer. Withdrawn questions cannot appear on an exam, so they are excluded here, leaving 599 live questions. The remaining questions were not renumbered, which is why you will see gaps in the question IDs.