Radiotelephony, Cockpit Radios

Question 2

High quality short-range voice communications are provided by the [VHF; HF]-COM radio set.

Answer 2

VHF

Question 3

Electrical power gets to the radios and other avionics via the electrical ___, and, in some cases, an additional ___. Each radio [has; does not have] an individual on-off switch.

Answer 3

master switch, avionics master switch, has

Question 4

A VHF-COM set that functions as both a transmitter and a receiver may be referred to as a t___.

Answer 4

transceiver

Question 5

The radios normally receive electrical power from the [alternator; battery] when the engine is running.

Answer 5

alternator

Question 6

To avoid electrical shocks to the sensitive radio equipment when the alternator comes on-line or drops offline, the radios should be switched [on; off] when starting and stopping the engine.

Answer 6

off

Question 7

If you leave the radios on for a long time with the alternator not functioning, you could f___ the b___.

Answer 7

flatten, battery

Question 8

The VOL control adjusts the volume of [transmission; reception; transmission and reception].

Answer 8

reception

Question 9

The frequency range allotted to aeronautical VHF voice transmissions is between ___ and ___ MHz.

Answer 9

118, 137

Question 10

The spacing between adjacent frequencies is ____ kHz.

Answer 10

8.33

Question 11

Specific radio frequencies for particular Air Traffic Service Units are listed in the ___ sections of the A___ I___ P___.

Answer 11

COM, Aeronautical Information Publication

Question 12

On many VHF-COM radio sets background noise can be minimised using the ___ control.

Answer 12

squelch

Question 13

The squelch control is used to adjust the sensitivity of the [receiver; transmitter].

Answer 13

receiver

Question 14

If you are transmitting on a particular frequency, can other people in the vicinity transmit on that frequency at the same time as you?

Answer 14

no

Question 15

If your transmit button becomes stuck in the transmit position, or if you forget to release it after completing your transmission, will that affect other transmissions? Will it block out that frequency?

Answer 15

yes, yes

Question 16

A stuck PTT switch causes what is called a s___ m___ or an o___ m___.

Answer 16

stuck mike, open mike

Question 17

When speaking on the radio, you should speak at a rate slightly [faster; slower] than in normal face-to-face conversation.

Answer 17

slower

Question 18

You [should; need not] listen out for any radio calls addressed to you.

Answer 18

should

Question 19

You switch to a new frequency as instructed and make a call. No response is received. After a second attempt is also unsuccessful, your first action should be to ___.

Answer 19

check the frequency

Question 20

If you are unsure of the frequency you were instructed to change to, you could ___.

Answer 20

revert to the previous frequency, identify yourself and ask, “Say frequency again.”

Question 21

If it appears that the VHF-COM set is not working, what three switches could you check? You could then check that no ___ has popped or f___ blown, and that the h___ and m___ are properly plugged in. Throughout this, you [must; need not] control the flightpath and airspeed of the aircraft accurately.

Answer 21

electrical master switch, avionics switch, VHF-COM, on-off switch or CB; fuse; headset; microphone; must

Question 22

VOR frequencies are selected on the (VHF-COM; VHF-NAV; DME; ADF) radio.

Answer 22

VHF-NAV

Question 23

NDB stands for __, and its frequency can be selected on the [VHF-COM; VHF-NAV; DME; ADF] radio.

Answer 23

non-directional beacon; ADF

Question 24

The cockpit equipment which enables an air traffic radar controller to identify your aircraft’s position and altitude by receiving coded signals is the ___. It is part of the s___ s___ r___ system.

Answer 24

transponder; secondary surveillance radar

Question 25

The ‘on’ position allows the transponder to operate on the four–digit code set in its control panel and provides [position; position and altitude] information to a radar controller. This is known as Mode [A; C], and is pronounced ___.

Answer 25

position; A; Mode Alpha

Question 26

The ALT position allows the transponder to operate on the four-digit code set in its control panel and provides [position; position and altitude] information to a radar controller. This is known as Mode [A; C], and is pronounced ___.

Answer 26

position and altitude; C; Mode Charlie

Question 27

When asked to squawk 5413, you should set ___ in the code selection panel, and make sure that the transponder is switched to either ___ or ___.

Answer 27

5413; ON or ALT

Question 28

Whilst squawking a conspicuity code with Mode C, ATC asks you to confirm your altitude or flight level; this is to ___.

Answer 28

confirm the altitude or flight level as displayed on the air traffic controller’s radar screen

Question 29

The number of possible codes that can be set in a typical transponder is ___. Where does this number come from?

Answer 29

4096; each of the four digits has 8 possibilities (from 0 to 7) and 8x8x8x8=4096

Question 30

When asked to squawk ‘ident,’ you should ___.

Answer 30

press the transponder ‘ident’ button

Question 31

The conspicuity code is ____.

Answer 31

7000

Question 32

The radio failure code is ____.

Answer 32

7600

Question 33

The emergency code is ____.

Answer 33

7700