AS 10 - Comms Systems Flashcards
Review Questions
How many portable oxygen systems are on board and where are they?
3
Behind co-pilot
In the emergency stowage next to airstair door
Beside baggage compartment door
Review Questions
Approximately how long will the portable oxygen system provide O2?
15 mins at 100% O2
The Audio Integration System at each student console consists of what?
Audio control panel
Headset with PTT switch
PTT switch on foot rest
The Audio Control Panel provides aircrew with the means to? (4 answers)
Control transmission and reception on external radios
Communicate internally on different interphone conferences
Monitor the AC navigation receivers (VOR/ ADF)
Access the passenger address (PA)
Where are Audio Control Panels located throughout the plane?
Student stations Instructor stations Crew rest area Flight attendants panel FE Pilots
How many interphone conferances are available? what are they?
3
INT
PRI 1
PRI 2
Which intercom conferences are to be used by who?
INT - available to all positions
PRI 1 - Available to pilots, FE I!, I@ and rest areas
PRI 2 - Students and instructors, crew rest area can select which PRI 2 to listen to
Is there an Audio Control Panel in the jump seat? If so, what is different regarding comms?
Yes there is.
If yo swish to speak, you must press the INPH switch to talk on INT
By selecting PA on the audio selector, what can crew members use to communicate?
Does this work at consoles?
5 speakers
No, SPKR switch is inoperative at consoles
In the event of an electrical failure, which position’s audio control panel will enter emergency audio integration mode?
The pilot, co-pilot and FE’s
In the event of an electrical failure, which position’s audio control panels will enter emergency audio integration mode and revert to which settings?
Pilot: VHF 1 and VOR 1
Co-Pilot: VHF 2 and VOR 2
The HF CT-142 radio system consists of what?
King KHF 950 HF radio
Radio control panels
Transceiver
Antenna
Where are the following located?
Radio control panels
Transceiver
Antenna
Radio control panels: located at each student/ instructor console and center console of the flight compartment
Transceiver: Avionic rack
Antenna: Leading edge of vertical stabilizer
What is the HF freq coverage and the preset channel capacity?
Freq coverage: 2.0 - 29.999 MHz
Capacity for 19 preset channels
The HF is capable of communicating using what?
USB (upperside band)
AM (amplitude modulation)
A3J (Maritime Radio-Telephone Network)
On the HF radio at the student’s stations, selection of the LSB and Maritime Radio-Telephone operation results in what?
The LSB and Maritime Radio-Telephone operation are disabled.
Instead, they connect to USB and A3J modes when selected.
On the CT-142, the volume control is set to what? What does the HF audio output control?
Mid range
The output level
On the CT-142, if the volume control is set too high what can happen?
It can overpower the coupler and affect transmission
On the CT-142, the squelch control does what? What is the 402 procedure?
Adjusts threshold of received signal (reduce static)
Turn Squelch off.
What are the possible selections for the Emission Mode Select? What is the default?
LSB, USB, AM
Set to USB
On the CT-142, what does the Frequency/ Channel control do?
Used to selected frequencies and channels
On the CT-142, the Memory Storage Button has what two functions?
Used to select one of 19 reset channels
Used to remove error messages
How do you know if the radio is tuning?
‘TX’ is flashing
How many people can have control of the HF at a time? How do you know if you have control?
1 person at a time
You know you have control if the CDU panel will be illuminated
