ATA 23 Radio Communication

Question 1

Aviation communication and navigation is accomplised through the use of ______

Answer 1

Radio waves

Question 2

The transmission of signals by modulation of electromagnetic waves with frequences below those of visible light

Answer 2

Radio communication

Question 3

Electromagnetic radiation travels by means of __________ that pass through the air and the vacuum of space

Answer 3

Oscillating electromagnetic fields

Question 4

Radio Communication requires the use of __________

Answer 4

Transmitting and Receiving Equipment

Question 5

Consists of a precise oscillating circuit or oscillator thst creates an AC carrier wave frequency

Answer 5

Transmitter Antenna

Question 6

Captures the desired carrier wave as well as many other waves that are present in the atmosphere

Answer 6

Receiver Antenna

Question 7

Half duplex systems where communication can occur in both directions but only one party can speak while the other must listen.

Answer 7

Transceiver

Question 8

Blocks the receiving circuitry and allows the transmitter circuitry to be active

Answer 8

Push-to-talk (PTT) switch

Question 9

Example of transceiver

Answer 9

VHF aircraft communication radios

Question 10

Type of radio wave that follows the curvature of the earth as theh travel from broadcast to receiving antenna.

Answer 10

Low and Medium Frequency
LF and MF

Question 11

Uses low and medium frequences

Answer 11

Automatic Direction Finders (ADF)

Question 12

Radio waves that travel in a straight line and is used for long range communication

Answer 12

High Frequency (HF) - 2 to 25 MHz

Question 13

HF radio waves bounces off of the ______________ of the atmosphere

Answer 13

Ionosphere layer

Question 14

Radio waves that are only capable of line-of-sight transmission and do not refract off of the ionosphere. Used for short range communication.

Answer 14

Very High Frequency (VHF)

Question 15

VHF operate in the frequency range from _____ to ______

Answer 15

118 MHz to 136.975 MHz

Question 16

What can alter the transmitting and receiving characteristics of an Antenna?

Answer 16

The exact shape and material

Question 17

Allow for the gradual bleed-off of static electrical charges during flight

Answer 17

Static Dischargers

Question 18

Where are static discharges typically installed?

Answer 18

On the trailing edges of the primary flight control surfaces

Question 19

Used as means to gain attention of crew members and to indicate that interphone communication is desired.

Answer 19

The call system

Question 20

Attention is gained through the use of __________

Answer 20

Lights and aural signals (chimes or horns)

Question 21

Allows cockpit crewmembers and flight attendants to make announcements throughout the cabin to the passengers

Answer 21

Public Address or Passenger Address (PA) system

Question 22

Four levels of priority assigned to the PA system

Answer 22

1. By the pilot
2. By the flight attendant
3. Pre-recorded announcments
4. Boarding music

Question 23

What does the cockpit voice recorder (CVR) continuously records?

Answer 23

• Radio communication
• Flight crew conversations
• Aural alerts
• General sound from flight compartment

Question 24

What is the Color of CVR and the device installed on it to aid its location if submerged?

Answer 24

Orange and underwater locator device