Section A · CHAPTER 18 OF 20

Coverage checklist against the published syllabus

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Syllabus area	Coverage in this guide
Elementary electricity and magnetism	Charge, current, voltage, resistance, conductance, units, Ohm's law, series/parallel circuits, power, energy, magnets, electromagnets.
Inductance and capacitance	Self and mutual inductance, inductors, capacitors, construction, series/parallel combinations and stored energy.
Alternating current	Sinusoidal quantities, peak, instantaneous, RMS, average, phase, reactance, impedance, RLC circuits, power factor.
Resonance and coupling	Series and parallel resonance, tuned circuits, Q, bandwidth and coupled circuits.
Transformers	Audio and RF transformers, turns ratio, losses and impedance matching.
Valves	Construction, thermionic emission, characteristic curves, diode, triode, multi-electrode valves and applications.
Semiconductors	Diodes, transistors, construction, biasing, amplification, oscillation, detection and frequency conversion.
Power packs	Rectification, half-wave, full-wave and bridge circuits, smoothing and stabilisation.
Receivers	TRF, superheterodyne, CW, sensitivity, selectivity, fidelity, adjacent-channel and image interference, AVC, squelch and SNR.
Transmitters	Low-power transmitter, crystal oscillator, stability and semiconductor transmitter blocks.
Communication principles	Analogue and digital communication, need for modulation, AM, FM, pulse modulation and demodulation.
Propagation	Electromagnetic spectrum, bands, wavelength, ground, sky and space waves, skip distance/zone, fading, ionosphere, troposphere and critical frequency.
Aerials	Common transmitting and receiving aerials, radiation principles, band-specific and microwave aerials.
Space communications	Satellite communication principles, uplink, downlink, orbit, footprint and Doppler shift.
Frequency measurement	Frequency measurement, simple frequency meters and modern test instruments.