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Communication and Navigation Systems
Airframe Oral Study Guide
21
Aviation
Undergraduate 1
03/30/2013

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Cards

Term
IS A CERTIFICATED AIRFRAME MECHANIC ALLOWED TO ADJUST A COMMUNICATIONS TRANSMITTER?
Definition
NO. REQUIRES A LICENSE FROM FCC.
Term
WHICH FREQUENCY BAND IS USED FOR MOST AIRCRAFT COMMUNICATIONS?
Definition
VHF BETWEEN 30 AND 300 MEGAHERTZ.
Term
IN WHICH FREQUENCY BAND DOES VOR EQUIPMENT OPERATE?
Definition
IN VHF BETWEEN 108 AND 117.95 MEGAHERTZ.
Term
WHAT IS THE PREFERRED LOCATION OF A VOR ANTENNA ON AN AIRPLANE?
Definition
ON THE TOP OF AN AIRCRAFT ALONG THE CENTER LINE OF THE FUSELAGE.
Term
WHICH COMPONENT OF THE INSTRUMENT LANDING SYSTEM SHARES THE ANTENNA WITH THE VOR?
Definition
ILS LOCALIZER.
Term
WHAT FREQUENCY BAND DOES THE DME EQUIPMENT OPERATE?
Definition
UHF BAND.
Term
WHAT IS THE PREFERRED LOCATION OF A DME ANTENNA?
Definition
ALONG THE CENTER LINE OF THE BELLY OF THE AIRCRAFT AS FAR AS PRACTICAL FROM ANY OTHER ANTENNA.
Term
ON WHAT FREQUENCY IS THE MARKER BEACON SIGNAL TRANSMITTED?
Definition
75-MEGAHERTZ.
Term
WHAT DO THE THREE MARKER BEACON LIGHT INDICATE TO THE PILOT?
Definition
  1. BLUE- PASSAGE OVER THE OUTER MARKER IN AN ILS APPROACH. 
  2. AMBER- PASSAGE OVER THE MIDDLE MARKER
  3. WHITE- PASSAGE OVER ANY OTHER LOCATION SPECIFIED ON THE INSTRUMENT APPROACH. 
Term
WHAT PRECAUTIONS SHOULD BE OBSERVED WHEN WORKING AROUND AIRCRAFT RADAR?
Definition
RADAR NOT OPERATED WHEN THERE ARE PEOPLE OR BUILDING WITHIN 100YARDS OF THE ANTENNA SWEEP, AND NOT OPERATED WHEN BEING FUELED OR DEFUELED.
Term
WHICH FREQUENCY BAND IS USED FOR LOND RANGE COMMUNICATIONS FROM AN AIRCRAFT?
Definition
THE HIGH FREQUENCY BAND 2 TO 25 MEGAHERTZ.
Term
WHAT IS MEANT BY A TRANSCEIVER?
Definition
A PIECE OF RADIO EQUIPMENT THAT CONTAINS ALL THE CIRCUITS FOR BOTH RECIEVER AND TRANSMITTER IN ONE HOUSING.
Term
ON WHAT TWO FREQUENCIES DOES THE EMERGENCY LOCATOR TRANSMITTER OPERATE?
Definition
121.5 AND 243.0 MEGAHERTZ.
Term
WHERES IS THE ELT TRANSMITTER NORMALLY LOCATED ON AN AIRCRAFT?
Definition
IN THE TAIL/AS FAR AFT AS POSSIBLE
Term
WHAT THREE COMPONENTS OF AN INSTRUMENT LANDING SYSTEM ARE INSTALLED IN AN AIRCRAFT?
Definition
RECIEVERS FOR THE LOCALIZER, GLIDE SCOPE, AND MARKER BEACONS.
Term
WHAT KIND OF ANTENNA IS USED FOR VHF COMMUNICATIONS?
Definition
VERTICALLY POLARIZED WHIP ANTENNA.
Term
WHAT KIND OF ANTENNA IS USED FOR THE ATC TRANSPONDER?
Definition
UHF STUB ANTENNA
Term
WHAT IS THE PREFERRED LOCATION FOR THE ATC TRANSPONDER ANTENNA?
Definition
ON THE CENTER LINE OF THE BELLY OF THE AIRCRAFT AS FAR FROM ANY OTHER ANTENNA AS PRACTICAL.
Term
WHAT KIND OF CONDUCTOR IS USED TO CONNECT A VHF OR UHF ANTENNA TO ITS RECIEVER OR TRANSMITTER?
Definition
COAXIAL CABLE.
Term
WHAT TWO TYPES OF ANTENNAS ARE USED WITH MOST ADF RECIEVERS?
Definition
DIRECTIONAL LOOP ANTENNA AND NONDIRECTIONAL SENSE ANTENNA.
Term
WHY IS IT NECESSARY TO INTALL A DOUBLER ON THE INSIDE OF THE AIRCRAFT SKIN WHEN AN ANTENNA IS MOUNTED ON THE SKIN?
Definition
TO PRETECT THE SKIN FROM FLEXING OR CRACKING FROM WIND LOADS ON THE ANTENNA.
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