Amateur Extra Class HamBook (2024–2028) #

Prepare for the Amateur Extra Class License with explanations, worked examples, and questions from the current exam pool. Find the latest HamBooks at hambook.org.

• Introduction
  • Welcome to Amateur Extra
  • Amateur Extra Class License
  • Understanding the Extra Exam
  • How to Use This HamBook
  • Preparing for the Upgrade
• Part 1: Advancing Radio Science
  • 1. Components and Logic
    • 1.1 Diodes and Junctions
    • 1.2 Transistors
    • 1.3 Light and Electricity
    • 1.4 Magnetic Components
    • 1.5 Chips at Radio Frequencies
    • 1.6 Logic Gates and Levels
    • 1.7 Timing and Digital Control
  • 2. AC and RF Foundations
    • 2.1 Phase and Stored Energy
    • 2.2 Drawing Complex Impedance
    • 2.3 Calculating AC Circuits
    • 2.4 Resonance and Q
    • 2.5 Real Components at RF
  • 3. Analog Radio Circuits
    • 3.1 Filters and Matching Networks
    • 3.2 Amplifier Circuits
    • 3.3 Operational Amplifiers
    • 3.4 Regulated Power Supplies
    • 3.5 Oscillators and Phase Locking
  • 4. Signals and Modulation
    • 4.1 Spectra, Mixing, and SSB
    • 4.2 Frequency and Phase Modulation
    • 4.3 Digital Symbols and Codes
    • 4.4 Digital Signal Bandwidth
    • 4.5 Sharing Signal Bandwidth
    • 4.6 Image and Television Signals
  • 5. Digital Radio and Receivers
    • 5.1 Converting Signals to Data
    • 5.2 Digital Signal Processing
    • 5.3 Noise and Sensitivity
    • 5.4 Receiver Limits and Distortion
  • 6. Antennas and Feed Lines
    • 6.1 Radiation and Efficiency
    • 6.2 Gain and Antenna Patterns
    • 6.3 Feed Line Behavior
    • 6.4 Wire Antennas and Ground
    • 6.5 Electrically Short Antennas
    • 6.6 Arrays and Reflectors
    • 6.7 Antenna Matching Methods
    • 6.8 Reading the Smith Chart
    • 6.9 Receiving Antennas
  • 7. Radio Wave Propagation
    • 7.1 Ground and Tropospheric Paths
    • 7.2 Ionospheric Paths
    • 7.3 Space Weather and Prediction
    • 7.4 Scatter and Moonbounce
• Part 2: Advancing Radio Operation
  • 8. Safety
    • 8.1 Towers and Lightning
    • 8.2 Evaluating RF Exposure
  • 9. Station Tools and Techniques
    • 9.1 Planning Station Power
    • 9.2 Improving Reception
    • 9.3 Finding Noise and Interference
    • 9.4 Meters, Scopes, and Counters
    • 9.5 Measuring RF Networks
    • 9.6 Checking Transmitter Output
  • 10. Operating on the Air
    • 10.1 DX and Contest Contacts
    • 10.2 Choosing a Digital Mode
    • 10.3 Meteor Scatter and Moonbounce
    • 10.4 Satellite Orbits and Links
    • 10.5 Satellite Signals and Control
    • 10.6 APRS and Mesh Networks
  • 11. Rules and Regulations
    • 11.1 Signal and Band Limits
    • 11.2 Spectrum and Station Sites
    • 11.3 LF, MF, and Experimental Use
    • 11.4 Station Control and Authority
    • 11.5 Permitted Uses and Messages
    • 11.6 Operating Across Borders
    • 11.7 Administering Exams