Radio Ops

Question 1

What does wave length refer to?

Answer 1

The distance between two consecutive pulses of radio transmission

Question 2

What does radio frequency refer to?

Answer 2

The number of pulses of radio transmission per second

Question 3

If wave length is short, frequency is?…

Answer 3

High

Question 4

If wave length is long, frequency is?…

Answer 4

Low

Question 5

Pulses of radio transmission travel at what speed?

Answer 5

The speed of light

300,000,000 m/sec

186,000 miles / sec

Question 6

Navigation aids such as Non-Directional Beacons (NDB) travel in which bandwidth?

Answer 6

Upper spectrum of low frequencies and lower spectrum of medium frequencies

Question 7

Low frequency radio transmissions send most of their energy through what form?

Answer 7

Ground waves

Question 8

High frequency radio transmissions send most of their energy through what form?

Answer 8

Sky waves

Question 9

What layer of the atmosphere can affect the sky wave component of medium-high frequency radio transmission due an acquired static charge?

Answer 9

The ionosphere

Question 10

Why are high frequency radio transmissions refereed to as ‘Line of Sight?’

Answer 10

Because they travel in a straight line and cannot follow the Earth’s curvature

Question 11

What factors can affect the propagation of radio transmission?

Answer 11

Power of the transmitter

Nature of the terrain

State of ionosphere

Sun spot activity

Spurious radio transmission from nearby electrical equipment

Lightning associated with thunderstorms

Question 12

What is the arbitrary bandwidth for High Frequency (HF) radio transmission?

Answer 12

3MHz - 30MHz

Question 13

What is the arbitrary bandwidth for Very High Frequency (VHF) radio transmission?

Answer 13

30MHz - 300MHz

Question 14

What is the arbitrary bandwidth of Ultra High Frequency (UHF) radio transmission?

Answer 14

300MHz - 3000MHz

Question 15

Air Traffic Control and aircraft use which bandwidth to communicate?

Answer 15

VHF radio

Question 16

When aircraft are out of VHF range, what bandwidth is employed for radio communication?

Answer 16

HF radio

Question 17

Aerodrome Weather Information Service (AWIS) broadcasts on which bandwidth?

Answer 17

VHF

Question 18

Aircraft operating in the vicinity of uncontrolled aerodromes (or unmanned towers) must maintain a listening-watch on what broadcast?

Answer 18

Common Traffic Advisory Frequency (CTAF)

Question 19

What is squelch and how is it managed on a VHF radio?

Answer 19

Squelch is the naturally occurring background noise (hiss) heard on the VHF bandwidth. Most of which comes from outer space!

Squelch can interfere with clear and concise radio communication.

Squelch can be minimised by adjusting the ‘Squelch Control’.

Question 20

What is the phonetic word for the letter ‘A’?

Answer 20

Alpha

Question 21

What is the phonetic word for the letter ‘B’?

Answer 21

Bravo

Question 22

What is the phonetic word for the letter ‘C’?

Answer 22

Charlie

Question 23

What is the phonetic word for the letter ‘D’?

Answer 23

Delta

Question 24

What is the phonetic word for the letter ‘E’?

Answer 24

Echo

Question 25

What is the phonetic word for the letter 'F'?

Answer 25

Foxtrot

Question 26

What is the phonetic word for the letter 'G'?

Answer 26

Golf

Question 27

What is the phonetic word for the letter 'H'?

Answer 27

Hotel

Question 28

What is the phonetic word for the letter 'H'?

Answer 28

Hotel

Question 29

What is the phonetic word for the letter 'H'?

Answer 29

Hotel

Question 30

What is the phonetic word for the letter 'I'?

Answer 30

India

Question 31

What is the phonetic word for the letter 'J'?

Answer 31

Juliett

Question 32

What is the phonetic word for the letter 'K'?

Answer 32

Kilo

Question 33

What is the phonetic word for the letter 'L'?

Answer 33

Lima

Question 34

What is the phonetic word for the letter 'M'?

Answer 34

Mike

Question 35

What is the phonetic word for the letter 'N'?

Answer 35

November

Question 36

What is the phonetic word for the letter 'O'?

Answer 36

Oscar

Question 37

What is the phonetic word for the letter 'P'?

Answer 37

Papa

Question 38

What is the phonetic word for the letter 'Q'?

Answer 38

Quebec

Question 39

What is the phonetic word for the letter 'R'?

Answer 39

Romeo

Question 40

What is the phonetic word for the letter 'S'?

Answer 40

Sierra

Question 41

What is the phonetic word for the letter 'T'?

Answer 41

Tango

Question 42

What is the phonetic word for the letter 'U'?

Answer 42

Uniform

Question 43

What is the phonetic word for the letter 'V'?

Answer 43

Victor

Question 44

What is the phonetic word for the letter 'W'?

Answer 44

Whiskey

Question 45

What is the phonetic word for the letter 'X'?

Answer 45

X-Ray

Question 46

What is the phonetic word for the letter 'Y'?

Answer 46

Yankee

Question 47

What is the phonetic word for the letter 'Z'?

Answer 47

Zulu

Question 48

How should the number '9' be pronounced during aviation radio communication?

Answer 48

Niner NIN er

Question 49

What is a mayday call, when should you make it and what must it include?

Answer 49

Distress message Emergency situation - ie: complete engine failure ``` Mayday, Mayday, Mayday! Who you are What you are Where you are What has happened What you intend to do - ie: attempting forces landing in a cleared field ```

Question 50

What is a pan call, when should you make it and what must it include?

Answer 50

Urgency call - ie: passsenger becomes seriously ill and requires medical attention; boat in distress etc ``` PAN, PAN, PAN Address station - ie: Jandakot, Townsville etc Who you are What you are Where you are Concern or assistance required ```