TOPIC SUBTOPIC  Objectives Students shall ...  L  CONTENT 
1.5.7 Describe procedures for providing Communications, Navigation and Surveillance (CNS) data to AIS  2  Information of a permanent nature, information of a temporary nature, status report of NAVAIDs 

Subject 3: COMMUNICATIONS
The general objective is:
To provide a basic foundation knowledge and understanding of the principles used in voice and Data Communications.

TOPIC SUBTOPIC  Objectives Students shall ...  L  CONTENT 
1 Voice Communications 
1.1 Introduction to Voice Communications  1.1.1 Describe system architecture and evolution  2 
1.1.2 Explain the purpose and principles of voice communication systems  2  Bandwidth, fidelity, routing, switching, lineside/deskside 
1.1.3 Describe, using an overall block schematic, the function and the performance of various speech and communication systems  2  Analogue/digital comparisons, distortion, harmonics 
1.1.4 Describe the basic principles, purpose and operation of a range of voice-communication systems, both air-ground and ground-ground  2  Transmission thread, reception thread, sidetone 
1.1.5 Describe the concepts and terminology in use, and the role of voice communications in ATC  2  Phraseology, readback, level, speed, direction 
1.1.6 Describe the functional elements of radio (sectorisation and frequencies, frequency spectrum and bands) and telephone system (intercom and interphone)  2  Deskside elements, lineside elements 
Page 22 Released Issue Edition Number: 2.0

TOPIC SUBTOPIC  Objectives Students shall ...  L  CONTENT 
1.1.7 Describe methods used to route and switch voice communications, describe how systems interface to produce an integrated service to ATC  2  Multi-channels, multi-users, party lines, VHF/UHF linkage, HF 
1.1.8 State ICAO and local legal requirements regarding recording and retention of voice communications  1  Regulatory requirements, incident recording and playback 
1.1.9 Describe frequency allocation constraints and procedures  2  Spectrum, interference sources, commercial allocations 
1.1.10 Describe frequency channelling and distribution system  2  Channel spacing: 25 kHz, 8.33 kHz, etc. 
1.1.11 Describe multi-frequency code and Qsig  2  Move to ground-ground 
1.1.12 Describe voice recording systems  2  Digital recording equipment, analogue recording 
1.1.13 Describe ATIS and VOLMET  2  Purpose of ATIS, information available, location, recency 
1.2 Air-Ground  1.2.1 State ATC requirements for secure voice communications  1  Safety, reliability, availability, coverage 
1.2.2 State the functions and describe the basic operation of routing and switching equipment  1  Voice switching 
1.2.3 Describe, with the aid of a block diagram, the purpose and operation of the elements of a typical system  2  Functionality, emergency systems, transmission/reception, antenna switching, 8.33 channel spacing, voting systems, CLIMAX 

TOPIC SUBTOPIC  Objectives Students shall ...  L  CONTENT 
1.2.4 Describe the signal path from the Controller Working Position (CWP) to the aircraft  2  CWP, switch, remote monitoring and control system, beam, PTT, radio station, RX/TX, on-board equipment 
1.2.5 Describe how continuity, integrity and Quality of Service (QoS) are achieved  2  Importance of coverage and redundancy of equipment, overlapping coverage, backup system 
1.2.6 State the theory and practice which ensure efficient utilisation of available frequency bands  1  International Frequency Bureau 
　
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