NOVICE LICENCE

PART 3 (CLASS B) Theoretical knowledge of the following:

1. ELEMENTARY ELECTRICITY

(a) BASIC ELECTRICITY

• Theory of electricity: units; conductors and insulators
• Application of Ohm's Law.
• Resistors in series and parallel.
• Types and use of resistors as well as the use of the International Colour Code and schematic symbols.

(b) MAGNETISM

• The permanent magnet and its magnetic field.
• The electromagnet and the development of its magnetic field.

(c) INDUCTORS

• Types of inductors and schematic symbols.

(d) CAPACITANCE

• Types of capacitors and schematic symbols.

2. ELEMENTARY RADIO PRINCIPLES

• The relationship between frequency and wavelength.

3. RADIO RECEIVING APPARATUS

• Principle and operation of continuous-wave receivers, hetrodyne oscillators, FM and SSB receivers.
• Problems causing interference to the reception of signals: cross modulation, second or adjacent-channel interference, image interference and break-through on radio and TV receiving apparatus.
• RF insulation of antenna and power supply.

4. TRANSMITTERS

• Principles and operation of double sideband, single sideband and continuous-wave transmitters.

5. PROPAGATION

• Calculation of wavelength and frequency.
• Nature and propagation of radio waves.
• Ionospheric and tropospheric conditions and their influence on propagation.

6. ANTENNAS

• Basic receive and transmit antennas - MF, HF and VHF

7. MEASUREMENTS

• The measurement of standing-wave ratios.
• The measurement of frequency and the use of absorption and crystal controlled frequency measuring instruments.

8. INTERFERENCE

• Frequency stability: causes and correction of instability.
• The effect and avoidance of harmonic radiation.
• Parasitic emission caused by short key clicks.
• Long distance key clicks and chirp, and the use of various filters to prevent this interference.
• The effect and problem of overmodulation and bandwidth.

9. GENERAL SAFETY IN THE AMATEUR RADIO STATION

• Earthing of sets.
• Loading of power plugs.
• Protection against RF and electric shocks.
• Treatment of electric shock and action.
• Lightning and fire protection.

10. KNOWLEDGE OF THE FOLLOWING

• Allocated frequencies.
• Operators procedure for all allocated modes.
• Frequency network.
• International phonetic alphabet.
• Keeping of Log Books.