Aviation Communication and Flight Radio
By Mike Becker
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About this ebook
In aviation, where aircraft are moving about in the air at high speeds, being able to communicate effectively with other aircraft, and with people on the ground is vitally important. This book focuses on the knowledge required to communicate using a radio in an aviation environment.
At the foundation of aviation communication,
Mike Becker
Mike Becker is one of Australia's most experienced helicopter instructors, with over 16,000 hours of rotary-wing flight experience. His career has taken him from the mountains in New Zealand to the outback of Australia and the jungles of Papua New Guinea. He has also worked in the United States, Italy and Borneo.He has flown a range of helicopter types - the Robinson R22, Robinson R44, Bell 47, Hughes 269, Hughes 500, Bell 206, Bell 427, Bell 212, EC120, Dragon Fly, Brantley B2B, Enstrom EF28, Sikorsky S62A, Hiller H12ET, Aerospatial AS350, Agusta 109E Power, Agusta 109S Grand, and the Agusta 119 Koala.He is experienced in a comprehensive range of helicopter operations, including high altitude, remote area operations, mustering, firefighting, tourism, sling load operations, specialised long-line operations, search and rescue, and Night Vision Goggles operations.Mike is a Grade One Flight Instructor and Flight Examiner who holds an Australian Air Transport Pilots Licence (Helicopter) and an Australian Commercial Pilots Licence (Fixed Wing).Mike is the Chief Pilot and Head of Training for his own business Becker Helicopters, in Australia. He, and his wife Jan, established Becker Helicopters in 1997 with one Bell 47 and have grown the company through a love of helicopters, hard work, and determination.Mike is the recipient of many awards, including the "Captain John Ashton Award for Flight Standards and Aviation Safety" by the Guild of Air Pilots and Air Navigators of London, which was awarded in recognition of over 18,000 accident-free flight training hours at Becker Helicopters. Mike has also authored "Mike Becker's Helicopter Handbook", first published in 1986, and a range of theory books and instructional videos.
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Aviation Communication and Flight Radio - Mike Becker
Factors that help you communicate
Most communication is done face-to-face, with the person you are talking to in front of you.
When communicating face-to-face, other factors help you convey meaning, comprising:
Vocabulary: That is using words that have particular meaning to what we are trying to communicate.
Vocal pitch of the voice when speaking the words, comprising:
Pitch: high squeaky voice or low deep voice
Speed: the rate at which the words are spoken
Volume: how loud or quiet the words are spoken, and
Tone: how they are spoken, for example, happy, sad, angry, or normal.
Body language, including facial expressions, eye contact, hand and other gestures.
Face-to-face vs radio communication
Universal facial expressions
There are seven (7) universal facial expressions as follows:
Interestingly, in face-to-face communication, only 7% of our effective communication comes from spoken words, the other 55% is through body language, and 38% is through the vocal pitch.
Therefore, when talking on the radio, we lose almost 93% of our main communication tools compared to communicating face-to-face. This means communicating on the radio can be difficult as we rely on only 7% of our communication tools to fully understand what the other person is saying.
Using the correct vocabulary becomes vitally important.
When communicating on the radio you must be aware that whatever you SAY is what the other person will BELIEVE, even if it is not what you MEAN.
To have an effective radio call, both the sender and the receiver must be using the same communication tools and be using the same standard words.
Elements of An Effective Radio Call
An effective radio call has four (4) elements. It is:
Clear
Concise
Consistent, and
Correct.
Clear
When making a radio call, others must be able to clearly hear and understand what you are saying. You need to speak directly into the microphone using standard phraseology slightly slower than you would typically use in everyday conversation. Remember the receiving person cannot see you, so:
they cannot see your gestures or posture,
they may not be able to hear the tone of your voice, so
what you say needs to be specific.
Concise
Concise means that radio calls should be short and to the point. Give the relevant information only.
Consistent
Consistent means that radio calls should follow a similar or consistent pattern. If using standard phraseology in the same order, you are more likely to get your message across.
Correct
Most importantly, you need to be accurate. Whatever you say, the receiving party will believe, so it is important to get it right. This is most relevant when stating your position, height and intentions.
What is radio?
To better understand the radio, let's run through some basic radio theory before moving on to how to use the radio in the aviation environment.
Radio is the wireless transmission (radiation) of electromagnetic signals through the atmosphere or space. Attached to these electromagnetic signals is sound or images, which can then be extracted from the electromagnetic signals and listened to or viewed.
History
During the late 1800s, several physicists predicted the existence of radio waves, but in 1886 a German physicist, Heinrich Hertz, demonstrated that rapid variations of electric current could be projected into space in the form of radio waves like those of light and heat.
In 1895, Gugliemo Marconi sent and received the first radio signal in Italy. By 1899 he flashed the first wireless signal across the English Channel, and in 1902 received the letter S
, telegraphed from England to Newfoundland, the first successful transatlantic radiotelegraph message.
From this point on, the use of radio and its development continued to what we have today.
Components
To make and receive a radio transmission requires several different components.
The pilot first speaks into a microphone (electrical transducer) to make a radio call, which converts the sound into an electrical signal that travels via wires to a radio box. This radio box has electronic processors and a transmitter that sends out an electromagnetic wave via an antenna that has been modulated (or changed) to carry the signal.
The electromagnetic wave is intercepted by another antenna that channels it to a receiver. A receiver is another radio box with electronic processors that translates the electromagnetic signal and extracts the original electrical signal. This signal travels by wires to the earphones (another electrical transducer) that converts the electrical signal back to sound that we can hear and understand.
Therefore, most radios have both a transmitter and a receiver so 2-way communication is possible.
Components of a Radio
Radio consists of the following major components:
Microphone
Wiring
Transmitter and Receiver
Antenna, and
Speaker.
1 — Microphone
A microphone converts the original sound into electricity (called a transducer in electronic terms).
2 — Wiring
Wiring, cables, connections and terminals allow the electrical signal to travel to and from the radio box and the various components. There can be miles of wiring running between the various components in an aircraft. Some of this wiring in modern aircraft is being replaced by wireless and Bluetooth technology.
3 — Transmitter and receiver
A radio box has electronic processors in it that allows the unit to be:
a transmitter, or
a receiver, or
both (called a transceiver).
For example, inside the Bendix/King VHF radio box.
Both the transmitter and the receiver will have the same basic components, including:
a power supply
an oscillator to generate a radio frequency carrier wave and control the frequency of the signal generated
an amplifier to increase the output energy of the signal
a modulator that is responsible for giving intelligence to the signal, where it codes for the transmitter and decodes for the receiver.
Scanner
A radio box that only has a receiver is called a Scanner
or Receiver
as it only accepts signals; it cannot transmit them.
Transceiver
A radio box that can both receive and transmit signals is called a Transceiver
, which is what is installed in aircraft.
4 — Antenna
The antenna projects an electromagnetic wave that carries the embedded signal from the radio box. It also receives an incoming electromagnetic wave and sends it to the radio box for decoding.
5 — Speaker
A speaker (usually installed in a set of earphones as part of a headset or helmet) translates the electrical signal back into sound that we can understand (a transducer in electronic terms).
Flight Radio Operator Rules
Aim
This chapter aims to:
Make the trainee aware of the Australian regulations related to aviation communication and operating a radio in an aircraft.
Introduction
Most rules and regulations around the operation of radio in aviation are based on information from the International Civil Aviation Organisation (ICAO).
A trainee must have a good level of English before commencing flying training. Without English skills, it is difficult to be understood and to understand what is said on the radio.
ICAO English levels
A pilot is required by international law to speak and understand English to operate an aircraft radio. As pilots come from different countries and speak different languages, levels of English skills vary.
ICAO has defined six (6) skill levels of Aviation English. The competencies required for Aviation English are defined for each level. Further, each level specifies any requirements to regularly re-test the individual to ensure a continued English level.
The ICAO Aviation English levels of skill are described below.
Level 6: Expert
Pronunciation
Pronunciation, stress, rhythm, and intonation, though possibly influenced by the first language or regional variation, almost never interfere with ease of understanding.
Structure
Both basic and complex grammatical structures and sentence patterns are consistently well controlled.
Vocabulary
Vocabulary range and accuracy are sufficient to communicate effectively on a wide variety of familiar and unfamiliar topics. Vocabulary is idiomatic, nuanced, and sensitive to register.
Fluency
Able to speak at length with a natural, effortless flow. Varies speech flow for stylistic effect, for example, to emphasise a point. Uses appropriate discourse markers and connectors spontaneously.
Comprehension
Comprehension is consistently accurate in nearly all contexts and includes comprehension of linguistic and cultural subtleties.
Interactions
Interacts with ease in nearly all situations. Is sensitive to verbal and non-verbal cues and responds to them appropriately.
Level 5: Extended
Pronunciation
Pronunciation, stress, rhythm, and intonation, though influenced by the first language or regional variation, rarely interfere with ease of understanding.
Structure
Basic grammatical structures and sentence patterns are consistently well controlled. Complex structures are attempted but with errors that sometimes interfere with meaning.
Vocabulary
Vocabulary range and accuracy are sufficient to communicate effectively on common, concrete, and work-related topics. Paraphrases consistently and successfully. Vocabulary is sometimes idiomatic.
Fluency
Able to speak at length with relative ease on familiar topics but may not vary speech flow as a stylistic device. Can make use of appropriate discourse markers or connectors.
Comprehension
Able to speak at length with relative ease on familiar topics but may not vary speech flow as a stylistic device. Can make use of appropriate discourse markers or