Exam Preparation Tips
Whether you are preparing for the Chinese CRAC exam, the US FCC exam, or another country's amateur radio license test, the strategies in this guide will help you study efficiently and pass with confidence.
Understanding the Exam Format
Most amateur radio exams worldwide share common characteristics:
- Multiple-choice questions drawn from a published or semi-published question pool
- Fixed passing threshold (e.g., 25/30 for CRAC A class, 26/35 for FCC Technician)
- Topics covering: regulations, basic electronics, radio theory, operating procedures, and safety
- No penalty for guessing -- always answer every question
The single most important fact about these exams is that question pools are publicly available in many countries (China, the United States, and others). If you study the actual questions, you know exactly what to expect.
Study Methods
Phase 1: Read Through the Entire Pool (Days 1-3)
Do not try to memorize anything on your first pass. Instead:
- Read every question and all answer choices
- Focus on understanding what each question is testing
- Mark questions you find confusing or difficult
- Get a sense of the overall scope -- how many questions are about regulations? How many about electronics?
Phase 2: Study by Topic (Days 4-7)
Organize questions into categories and work through them systematically:
- Regulations and law -- These are pure memorization. Learn the key numbers (power limits, license validity periods, callsign identification intervals).
- Basic electronics -- Ohm's law, power formulas, decibel calculations. Practice the math until it is automatic.
- Radio theory -- Frequency/wavelength relationships, modulation types, propagation. Understanding the concepts makes these easy.
- Operating procedures -- Q-codes, phonetic alphabet, calling procedures, signal reports. Practical knowledge you will use on the air.
- Safety -- RF exposure limits, electrical safety, lightning protection. Often straightforward common sense.
Phase 3: Drill Wrong Answers (Days 8-10)
- Review every question you got wrong or were unsure about
- For each wrong answer, understand why the correct answer is correct and why the others are wrong
- Use flashcard apps or spaced repetition techniques for stubborn items
- Re-test yourself on your weak categories
Phase 4: Practice Exams (Days 11-14)
- Take full-length timed practice exams under realistic conditions
- Aim for a score well above the passing threshold (e.g., 28/30 for CRAC A class, 32/35 for FCC Technician)
- If you consistently pass practice exams with a comfortable margin, you are ready
Key Knowledge Areas
Must-Know Regulations
These regulatory topics appear on nearly every exam:
- Definition of amateur service: Self-training, intercommunication, and technical investigation, without pecuniary interest
- Prohibited activities: No commercial communications, no broadcasting, no encrypted messages (except for satellite control), no music transmission
- Emergency communications: In a genuine emergency threatening life or property, you may use any frequency and any mode
- Station identification: You must identify with your callsign at the beginning and end of each contact, and at regular intervals (typically every 10 minutes)
- Interference: Amateur stations must not cause harmful interference to other services and must accept interference from primary services
- Power limits: Know the maximum power for each license class
Must-Know Electrical Formulas
| Formula | Description |
|---|---|
| V = I x R | Ohm's law (voltage = current x resistance) |
| P = V x I = I^2 x R = V^2 / R | Power formulas |
| dB = 10 x log(P2/P1) | Power ratio in decibels |
| dB = 20 x log(V2/V1) | Voltage ratio in decibels |
| Wavelength (m) = 300 / Frequency (MHz) | Frequency-wavelength conversion |
| R_total = R1 + R2 + ... | Resistors in series |
| 1/R_total = 1/R1 + 1/R2 + ... | Resistors in parallel |
Must-Know Operating Knowledge
- Q-codes: QTH (location), QSL (confirmation), QRZ (who is calling?), QSY (change frequency), QRM (man-made interference), QRN (natural noise), QRP (low power), QRT (shutting down)
- Phonetic alphabet: Alfa, Bravo, Charlie, Delta... used to spell out callsigns clearly
- RST signal reports: R (readability, 1-5), S (signal strength, 1-9), T (tone, 1-9, CW only)
- Basic QSO format: CQ call --> response --> exchange signal reports and information --> sign off with 73
Common Mistakes and How to Avoid Them
Mistake 1: Confusing dB Formulas
Problem: Using the voltage dB formula (20 log) when the question asks about power, or vice versa.
Rule: Power uses 10 x log(P2/P1). Voltage uses 20 x log(V2/V1).
Quick reference:
- +3 dB = power doubles
- +10 dB = power increases 10x
- +20 dB = power increases 100x
Mistake 2: Wavelength-Frequency Confusion
Problem: Forgetting the formula or getting the numbers wrong.
Rule: Wavelength (m) = 300 / Frequency (MHz). The "2-meter band" is near 150 MHz (actually 144-148 MHz). The "70-centimeter band" is near 430 MHz.
Mistake 3: Memorizing Answer Letters Instead of Content
Problem: Some students memorize "Question 47 = answer B" instead of understanding the content. But exam software may randomize the order of answer choices.
Rule: Always understand what makes the correct answer correct. This also prepares you for real-world operating.
Mistake 4: Ignoring Regulation Questions
Problem: Technical-minded students focus on electronics and skip regulations. But regulation questions are often the largest category and the easiest to get right with minimal study.
Rule: Study regulations first -- they are mostly memorization and represent easy points.
Mistake 5: Antenna Impedance Confusion
Problem: Confusing the feedpoint impedance of a half-wave dipole (~73 ohms) with the standard impedance of coaxial cable (50 ohms).
Rule: A half-wave dipole resonates at approximately 73 ohms. Standard coax and most transceivers are designed for 50 ohms. A slight mismatch is normal and acceptable.
Recommended Study Resources
For Chinese CRAC Exams
- Official question pool: Download from CRAC website -- this is the definitive source
- Mobile apps: "HAM Exam" (various apps on Android/iOS with the latest question pool, mock exams, and wrong-answer tracking)
- HELLOCQ forum: https://www.hellocq.net -- China's largest HAM community, with many exam experience posts
- Bilibili (B站): Search for CRAC exam tutorials -- many video explanations available
- Study textbook: "Amateur Radio Communication" published by CRAC
For US FCC Exams
- HamStudy.org: Free online practice exams with the complete question pool, excellent statistics tracking
- ARRL resources: The ARRL publishes license manuals for each exam level (Technician, General, Extra)
- Ham Radio Prep (hamradioprep.com): Video-based course covering all three license levels
- hamstudy app: Mobile app for on-the-go practice
- QRZ.com practice exams: Free practice tests
For Other Countries
- UK (RSGB): The RSGB publishes study guides for Foundation, Intermediate, and Full license exams
- Japan: JARD (Japan Amateur Radio Development Association) publishes study materials; exams are available in Japanese
- Australia (WIA): The Wireless Institute of Australia provides study guides for Foundation, Standard, and Advanced exams
Exam Day Checklist
- [ ] Bring valid photo identification (national ID card, passport, or driver's license as required)
- [ ] Confirm the exam time and location
- [ ] Arrive early (at least 30 minutes before the scheduled start)
- [ ] Bring any required materials (calculator if permitted, pencils, etc.)
- [ ] Phone on silent or powered off
- [ ] Stay calm -- if you have studied the question pool thoroughly, you are well prepared
Final Advice
For entry-level exams, the key is to go through the question pool at least three times. For intermediate and advanced exams, you need to understand the underlying principles, not just memorize answers. The option order may be shuffled on the actual exam, so knowing the reasoning behind each answer is essential.
Contributors
IUU6