Free ACMA Advanced Amateur Radio Theory Exam Prep

Conductivity, batteries and sources, electric and magnetic fields, waveforms, modulation, power, energy, sampling, quantisation and ADC/DAC.

Resistors, capacitors, inductors, transformers, diodes, transistors, thermionic devices and integrated circuits.

Component networks, analogue and digital filters including FIR/IIR, power supplies, amplifiers, detectors, oscillators, PLLs, Fourier transforms and direct digital synthesis.

Receiver types and block diagrams, stages, sensitivity, selectivity, stability, image responses, desensitisation, intermodulation and reciprocal mixing.

Transmitter types, block diagrams and stages, output matching and filtering, modulation, efficiency, bandwidth, harmonics, spurious emissions, key clicks and splatter.

Antenna types and characteristics, feedpoint impedance, radiation patterns, gain, ERP/EIRP, feeders, waveguides, velocity factor, SWR, loss, baluns and matching units.

Ground, sky and line-of-sight paths, ionospheric and tropospheric effects, fading, noise, meteor and lunar paths, and propagation prediction using link budgets.

Voltage, current, resistance, DC/RF power, SWR, frequency and resonance; waveform, frequency and meter-loading errors; multi-range meters and RF test instruments.

Blocking, signal interference, intermodulation and audio detection; antenna, cable and direct-radiation coupling; prevention using filtering, decoupling and shielding.

High-voltage and mains hazards, earthing, protective devices, battery safety, EMR separation, qualified work at height, lightning precautions and safe headphone use.