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AVT 123

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AVT 123
AVT 123
(Aircraft Communications/SATCOM)

Communication
The sending of a message via medium to a receiver

Feedback – a response or one that sets such a process in motion; a reply or reaction to a stimulus.

Hindrances to communication
Noise
Language Barrier
Weather
Surroundings
Language/Sound Barrier
Media Failure

Telecommunication
TELE – Greek word…… at a distance
The sending of a message through a medium to a receiver at a distance; involved the use of machines or equipments to increase the transmission and reception distance.
Aeronautical Telecommunication
Is the exchange of messages related to aviation or aeronautical messages such as NOTAM, departure, arrival, position report, FLT plan, and air report.
Early Forms of Communication
1. Sign Language/Body Signals
2. Voice Sounds
3. Messenger
4. Carrier Pigeons
5. Smoke Signal
6. Signaling Flags

Current Forms of Communication
1. Morse Code
2. Radio Voice
3. Video Broadcast
4. Telephony
5. Electronic Data
Annex 10 To The Convention on International Civil Aviation (Communication Procedures) Vol.II
Transmitter – is an apparatus, contrivance, device or equipment designed to be capable of transmitting or emitting signs, signals, writings, images and sounds or intelligence of any nature.
Receiver – is an apparatus, contrivance, device or equipment designed to be capable of receiving images and sounds or intelligence of any nature.
Frequency – number of times any action or occurrence is repeated in a given period.
Frequency Spectrum
ELF – Extremely Low Frequency 3 – 300 hz (Submarine coms and electricity)
VLF – Very Low Frequency 3 khz – 30 khz (Human Voice and Hearing)
LF – Low Frequency 30 khz – 300 khz (Dog’s Hearing Range)
MF – Medium Frequency 300 khz – 3 Mhz (AM Radio band)
HF – High Frequency 3 Mhz – 30 Mhz (Shortwave Radios)
VHF – Very High Frequency 30 Mhz – 300 Mhz (Aeronautical band, TV and FM Band)
UHF – Ultra High Frequency 300 Mhz – 3 Ghz

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