The Amateur Extra test has 50 randomly chosen questions from a pool of at least 500 questions.
The E1 section of the Amateur Extra test contains information on commission's rules.
E1AEditThe E1A section covers Operating Standards: frequency privileges; emission standards; automatic message forwarding; frequency sharing; stations aboard ships or aircraft.
E1BEditThe E1B section covers station restrictions and special operations: restrictions on station location; general operating restrictions; spurious emissions, control operator reimbursement; antenna structure restrictions; RACES operations.
E1CEditThe E1C section covers Station Control: definitions and restrictions pertaining to local, automatic and remote control operation; control operator responsibilities for remote and automatically controlled stations.
E1DEditThe E1D section covers Amateur Satellite service: definitions and purpose; license requirements for space stations; available frequencies and bands; telecommand and telemetry operations; restrictions and special provisions; notification requirements.
E1EEditThe E1E section covers volunteer examiner program: definitions; qualifications; preparation and administration of exams; accreditation; question pools; documentation requirements.
E1FEditThe E1F section covers miscellaneous rules: external RF power amplifiers; national quiet zone; business communications; compensated communications; spread spectrum; auxiliary stations; reciprocal operating privileges; IARP and CEPT licenses; third party communications with foreign countries; special temporary authority.
The E2 section of the Amateur Extra test contains information on operating procedures.
E2AEditThe E2A section covers amateur radio in space: amateur satellites; orbital mechanics; frequencies and modes; satellite hardware; satellite operations.
The E2B section covers television practices: fast scan television standards and techniques; slow scan television standards and techniques.
E2CEditThe E2C section covers operating methods: contest and DX operating; spread-spectrum transmissions; selecting an operating frequency.
E2DEditThe E2D section covers Operating methods: VHF and UHF digital modes; APRS.
E2EEditThe E2E section covers operating methods: operating HF digital modes; error correction.
The E3 section of the Amateur Extra test contains information on radio wave propagation.
E3AEditThe E3A section covers propagation and technique: Earth-Moon-Earth communications (EME), meteor scatter.
E3BEditThe E3B section covers propagation and technique: trans-equatorial, long path, gray-line; multi-path propagation.
E3CEditThe E3C section covers propagation and technique: aurora propagation selective fading; radio-path horizon; take-off angle over flat or sloping terrain; effects of ground on propagation; less common propagation modes.
The E4 section of the Amateur Extra test contains information on amateur practices.
E4AEditThe E4A section covers test equipment: analog and digital instruments; spectrum and network analyzers, antenna analyzers; oscilloscopes; testing transistors; RF measurements.
E4BEditThe E4B section covers measurement techniques: instrument accuracy and performance limitations; probes; techniques to minimize errors; measurement of Q; instrument calibration.
E4CEditThe E4C section covers receiver performance characteristics: phase noise; capture effect; noise floor; image rejection; MDS; signal-to-noise-ratio; selectivity.
E4DEditThe E4D section covers receiver performance characteristics: blocking dynamic range; intermodulation and cross-modulation interference; 3rd order intercept; desensitization; preselection.
E4EEditThe E4E section covers noise suppression: system noise; electrical appliance noise; line noise; locating noise sources; DSP noise reduction; noise blankers.
The E5 section of the Amateur Extra test contains information on electrical principles.
E5AEditThe E5A section covers resonance and Q: characteristics of resonant circuits; series and parallel resonance; Q; half-power bandwidth; phase relationships in reactive circuits.
E5BEditThe E5B section covers time constants and phase relationships: RLC time constants; definition; time constants in RL and RC circuits; phase angle between voltage and current; phase angles of series and parallel circuits.
E5CEditThe E5C section covers Impedance plots and coordinate systems: plotting impedances in polar coordinates; rectangular coordinates.
E5DEditThe E5D section covers AC and RF energy in real circuits: skin effect; electrostatic and electromagnetic fields; reactive power; power factor; coordinate systems.
The E6 section of the Amateur Extra test contains information on circuit components.
E6AEditThe E6A section covers semiconductor materials and devices: semiconductor materials; germanium, silicon, P-type, N-type; transistor types: NPN, PNP, junction, field-effect transistors: enhancement mode; depletion mode; MOS; CMOS; N-channel; P-channel.
E6BEditThe E6B section covers semiconductor diodes.
E6CEditThe E6C section covers integrated circuits: TTL digital integrated circuits; CMOS digital integrated circuits; gates.
E6DEditThe E6D section covers optical devices and toroids: cathode-ray tube devices; charge-coupled devices (CCDs); liquid crystal displays (LCDs) Toroids: permeability; core material; selecting; winding.
E6EEditThe E6E section covers piezoelectric crystals and MMICs: quartz crystal oscillators and crystal filters); monolithic amplifiers.
E6FEditThe E6F section covers optical components and power systems: photoconductive principles and effects, photovoltaic systems, optical couplers, optical sensors, and optoisolators.
The E7 section of the Amateur Extra test contains information on practical circuits.
E7AEditThe E7A section covers digital circuits: digital circuit principles and logic circuits: classes of logic elements; positive and negative logic; frequency dividers; truth tables.
E7BEditThe E7B section covers amplifiers: class of operation; vacuum tube and solid-state circuits; distortion and intermodulation; spurious and parasitic suppression; microwave amplifiers.
E7CEditThe E7C section covers filters and matching networks: types of networks; types of filters; filter applications; filter characteristics; impedance matching; DSP filtering.
E7DEditThe E7D section covers power supplies and voltage regulators.
E7EEditThe E7E section covers Modulation and demodulation: reactance, phase and balanced modulators; detectors; mixer stages; DSP modulation and demodulation; software defined radio systems.
E7FEditThe E7F section covers frequency markers and counters: frequency divider circuits; frequency marker generators; frequency counters.
E7GEditThe E7G section covers active filters and op-amps: active audio filters; characteristics; basic circuit design; operational amplifiers.
E7HEditThe E7H section covers oscillators and signal sources: types of oscillators; synthesizers and phase-locked loops; direct digital synthesizers.
The E8 section of the Amateur Extra test contains information on information on signals and emissions.
E8AEditThe E8A section covers AC waveforms: sine, square, sawtooth and irregular waveforms; AC measurements; average and PEP of RF signals; pulse and digital signal waveforms.
E8BEditThe E8B section covers modulation and demodulation: modulation methods; modulation index and deviation ratio; pulse modulation; frequency and time division multiplexing.
E8CEditThe E8C section covers digital signals: digital communications modes; CW; information rate vs. bandwidth; spread-spectrum communications; modulation methods.
E8DEditThe E8D section waveforms: measurement, peak-to-peak, RMS, average; electromagnetic waves: definition, characteristics, polarization.
The E9 section of the Amateur Extra test contains information on antennas and transmission lines.
E9AEditThe E9A section covers isotropic and gain antennas: definitions; uses; radiation patterns; basic antenna parameters: radiation resistance and reactance, gain, beamwidth, efficiency.
E9BEditThe E9B section covers antenna patterns: E and H plane patterns; gain as a function of pattern; antenna design (computer modeling of antennas); yagi antennas.
E9CEditThe E9C section covers wire and phased vertical antennas: beverage antennas; rhombic antennas; elevation above real ground; ground effects as related to polarization; take-off angles.
E9DEditThe E9D section covers directional antennas: gain; satellite antennas; antenna beamwidth; stacking antennas; antenna efficiency; traps; folded dipoles; shortened and mobile antennas; grounding.
E9EEditThe E9E section covers matching: matching antennas to feed lines; power dividers.
E9FEditThe E9F section covers transmission lines: characteristics of open and shorted feed lines; 1/8 wavelength; 1/4 wavelength; 1/2 wavelength; feed lines: coax versus open-wire; velocity factor; electrical length; coaxial cable dielectrics; velocity factor.
E9GEditThe E9G section covers the Smith chart.
E9HEditThe E9H section covers effective radiated power; system gains and losses; radio direction finding antennas.
The E0 section of the Amateur Extra test contains information on safety.