AAAS Flashcards
an electronic device which produces radio waves with an antenna
Transimtter
is for transmission of music and speech
radio- telephony transmitter
transmission of signals
radio- telegraphy transmitter
transmission of moving pictures
TV transmitter
Is the transmission of codes.
is an electronic device that receives radio waves and converts the information carried
by them to a usable form
Code Transmitter
may be defined as its ability to drive the output transducer to an
acceptable level
Receiver’s sensitivity
may be defined as the extent to which a receiver of
differentiating between the desired signal and disturbances at other frequency
Receiver’s Selectivity
is the way radio signals are transmitted from one point to another inside the earth’s atmosphere or free space
radio propagation
is a radio wave that travels along Earth’s Surface
Ground Wave
Used for long distance transmission. It has the ability to strike the ionosphere, be refracted from
it to ground, strike the ground, be reflected back toward the ionosphere..
Sky wave
The propagated wave is direct from transmitting to receiving antenna and does not travel along
the ground. And it is also called line-of-sight transmission disturbances.
Space Wave
A communication satellite is placed into synchronous orbit, which means its position remains
fixed with respect to the earth’s rotation
Satellite Communication
VLF
Under water comms
LF
30,000 hz- 300,000hz AM radio
MF
300,000- 3MHz AM radio
HF
3M-30M Hz - AM radio Long distance Aviation Communication
VHF
30M-300M Hz - FM
UHF
300M to 1B Hz - Fm, Tv, phone, wireless network, blue tooth gps
SHF
TV sattelite
EHF
Radio Astronomy, full body scanners
give the capability of tuning all communication radios. The
frequencies are tuned by using the 2 concentric knobs.
Radio Management Panels
operates at 118-135 MHz frequency range.
VHF
is a digital data link system for the transmission of messages between aircraft and ground stations,
which has been in use since 1978
ACARS
ACARS
Aircraft Communication Addressing and Reporting Systems
ACARS messages may be of three types based upon their content:
Air Traffic Control (ATC)
Aeronautical Operational Control (AOC)
Airline Administrative Control (AAC)
Records the conversation of pilots and ambiance sound on flight deck every 30 mins.
CVR
records the last 2 hours of the flight crew conversations and communications and aural warnings. It records
automatically in flight and on ground when at least 1 engine is running and for 5 minutes after the last engine is shut
down.
SSCVR solid state cockpit voice recorder
Avoid static electricity discharging noise and ensure a good quality of radio transmission, without interference.
static discharger
wing tip and aileron
9 per wing; 2 maybe missing
horizontal stabilizer
5 per side; 1 maybe missing
fin and rudder
5 per side; 1 maybe missing
flap track fairing
3 per wing; 1 maybe missing
2 kinds of static discharger
typical trailing edge installation
typical tip installation
allows the flight crew to communicate with flight attendant or
ground personnel.
interphone system
The interphone communication system includes:
Flight interphone
Cabin Interphone
Service Interphone
Passenger service
ACP There are____Audio Control Panels (ACPs) located next to an RMP. The ACPs control
the channel and volume of transmission /reception.
Two are located on the center pedestal, a third
one on the overhead panel. In case of a faulty CAPT or F/O ACP, the third occupant ACP can be
selected by a manual switch.
function makes interphone links between pilots themselves and the ground
mechanic at the jack connection on the external power panel 108 VU.
flight interphone
Is made of eight service interphone jacks located around the aircraft to facilitate
communications between personnel during maintenance operations
Service interphone
On ground only, The Landing Gear Control and Interface Units (LGCIUs) send a ground signal to
the SVCE INTPH SYS, integrated in the CIDS directors
Automatic mode
The SVCE INT OVRD pushbutton, on the maintenance panel, must be pressed. When the SVCE
INT OVRD pushbutton is pressed or when the aircraft is on jacks, a ground signal is sent to the CIDS
directors.
Manual mode
Provides communication between Cabin Attendant and flight crew
Cabin Interphone
If the Cockpit wants to communicate to the Flight Attendant.
On the ACP, Push
the ATT Button and On call panel, choose what station they want to call. On
Cabin, the Area call Panel illuminates Blue (Cockpit call)
If the Flight Attendant wants to communicate the flight crew, On their handset,
push the cockpit pushbutton.
On ACP, the CAB pushbutton switch illuminates and
has aural warnings on Loudspeaker
To establish the communication between cabin to cabin.
On the Handset, the
crew can call any of the cabin station areas: FWD, AFT and AFT R and ALL
give the capability of tuning all communication radios. The
frequencies are tuned by using the 2 concentric knobs.
The Radio Management Panels (RMPs)
