Communication and Navigation Systems Flashcards
What are the basic components of a communicating system?
transmitter, receiver, radio waves, and antenna
What is the most common communication system in use?
VHF
What powers an Emergency Locator Transmitter (ELT)?
a battery
What is one method to test the output signal during an ELT test?
activate and listen to 121. 5
How do you turn off an ELT battery if a G-force has activated it?
a switch on the ELT
What designated time slot is it approved to test an ELT transmitter for operation?
top of each hour to 5 minutes past
How do they provide protection against vibrations and hard landing with some radio equipment installations?
shock mounts
What is the purpose of static discharge wicks mounted on the aircraft?
to reduce radio receiver interference
Name a couple of reasons to periodically inspect static discharge wick.
verify security, verify resistance
What are few reasons to inspect radio coaxial cable installation?
check security, and shielding
What may occur if the radio shock mount bonding jumper is broken or not properly attached to the surface?
noise in avionics
What are the sensing elements of an autopilot system?
attitude and direction gyros, turn and bank coordinator, altimeter
How often does the ATC transponder require certification?
Every 24 calendar months
Why are two antennas or a single multi element antenna required for an ILS system?
one for localizer signal and the other for glideslope signal
What does the acronym DME stand for?
Distance Measuring Equipment
