Amateur Extra Topic Study
Study the Amateur Extra amateur radio license exam one subelement at a time. Choose the subelements to practice and see your accuracy in each.
What's on the Exam
- Commission rules: Frequency privileges; Station restrictions and special operations; Automatic and remote control; Amateur Space and Earth stations; Volunteer examiner program; Miscellaneous rules.
- Operating procedures: Amateur radio in space; Television practices; Contest and DX operating; Operating methods.
- Radio wave propagation: Electromagnetic Waves and Specialized Propagation; Transequatorial propagation; Propagation prediction and reporting.
- Amateur practices: Test equipment; Measurement technique and limitations; Receiver performance; Receiver performance characteristics; Noise and interference.
- Electrical principles: Resonance and Q; Time constants and phase relationships; Coordinate systems and phasors in electronics; RF effects in components and circuits.
- Circuit components: Semiconductor materials and devices; Diodes; Digital ICs; Inductors and piezoelectricity; Semiconductor materials and packages for RF use; Electro-optical technology.
- Practical circuits: Digital circuits; Amplifiers; Filters and matching networks; Power supplies and voltage regulators; Modulation and demodulation; Software defined radio fundamentals; Operational amplifiers; Oscillators and signal sources.
- Signals and emissions: Fourier analysis; Modulation and demodulation; Digital signals; Keying defects and overmodulation of digital signals.
- Antennas and transmission lines: Basic antenna parameters; Antenna patterns and designs; Practical wire antennas; Yagi antennas; Impedance matching; Transmission lines; The Smith chart; Receiving antennas.
- Safety: Safety.