Radiotelephony, Cockpit Radios Flashcards
High quality short-range voice communications are provided by the [VHF; HF]-COM radio set.
VHF
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.
master switch, avionics master switch, has
A VHF-COM set that functions as both a transmitter and a receiver may be referred to as a t___.
transceiver
The radios normally receive electrical power from the [alternator; battery] when the engine is running.
alternator
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.
off
If you leave the radios on for a long time with the alternator not functioning, you could f___ the b___.
flatten, battery
The VOL control adjusts the volume of [transmission; reception; transmission and reception].
reception
The frequency range allotted to aeronautical VHF voice transmissions is between ___ and ___ MHz.
118, 137
The spacing between adjacent frequencies is ____ kHz.
8.33
Specific radio frequencies for particular Air Traffic Service Units are listed in the ___ sections of the A___ I___ P___.
COM, Aeronautical Information Publication
On many VHF-COM radio sets background noise can be minimised using the ___ control.
squelch
The squelch control is used to adjust the sensitivity of the [receiver; transmitter].
receiver
If you are transmitting on a particular frequency, can other people in the vicinity transmit on that frequency at the same time as you?
no
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?
yes, yes
A stuck PTT switch causes what is called a s___ m___ or an o___ m___.
stuck mike, open mike
When speaking on the radio, you should speak at a rate slightly [faster; slower] than in normal face-to-face conversation.
slower
You [should; need not] listen out for any radio calls addressed to you.
should
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 ___.
check the frequency
If you are unsure of the frequency you were instructed to change to, you could ___.
revert to the previous frequency, identify yourself and ask, “Say frequency again.”
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.
electrical master switch, avionics switch, VHF-COM, on-off switch or CB; fuse; headset; microphone; must
VOR frequencies are selected on the (VHF-COM; VHF-NAV; DME; ADF) radio.
VHF-NAV
NDB stands for __, and its frequency can be selected on the [VHF-COM; VHF-NAV; DME; ADF] radio.
non-directional beacon; ADF
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.
transponder; secondary surveillance radar
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 ___.
position; A; Mode Alpha
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 ___.
position and altitude; C; Mode Charlie
When asked to squawk 5413, you should set ___ in the code selection panel, and make sure that the transponder is switched to either ___ or ___.
5413; ON or ALT
Whilst squawking a conspicuity code with Mode C, ATC asks you to confirm your altitude or flight level; this is to ___.
confirm the altitude or flight level as displayed on the air traffic controller’s radar screen
The number of possible codes that can be set in a typical transponder is ___. Where does this number come from?
4096; each of the four digits has 8 possibilities (from 0 to 7) and 8x8x8x8=4096
When asked to squawk ‘ident,’ you should ___.
press the transponder ‘ident’ button
The conspicuity code is ____.
7000
The radio failure code is ____.
7600
The emergency code is ____.
7700
