NAOPM (TRANSPONDER & DME - Finals)

Question 1

Distance information received from DME equipment is _____ and not actual horizontal distance.

Answer 1

slant range distance

Question 2

Operating frequency range of DME

Answer 2

960 Mhz - 1215 Mhz

Question 2

DME can display what

Answer 2

• Aircraft speed
• Elapsed time for arrival

Question 3

What type of pulse is used by distance measuring equipment

Answer 3

paired pulse

Question 4

Process of signal exchange in DME

Answer 4

Paired Pulse (Aircraft) –> Ground station –> Paired Pulse (Ground station) –> Aircraft

Question 5

the time required for the round trip of the signal exchange (DME) is measured in the

Answer 5

Airborne DME unit

Question 6

DME system components

Answer 6

• DME antenna
• DME interrogator
• Display/Instrument

Question 7

DME GND station location

Answer 7

• ILS/DME
• VOR/DME

Question 8

an avionics component that gives information about the aircraft
identification and barometric altitude to the Air Traffic Control (ATC)

Answer 8

Transponder

Question 9

ATC Transponder is considered as an

Answer 9

airborne instrument

Question 10

ATC is considered as a

Answer 10

ground station

Question 11

The ATC system operates on two frequencies within the L-band of radar

Answer 11

• Interrogation code (1030 Mhz)
• Reply codes (1090 Mhz)

Question 12

Types of ATC transponder

Answer 12

• Mode A
• Mode C
• Mode S

Question 13

This type of ATC transponder Transmits only a 4-digit identifying squawk code.

Answer 13

Mode A

Question 14

This type of ATC transponder transmit both the transponder code and pressure altitude information

Answer 14

Mode C

Question 15

This type of ATC transponder functions the same way as mode A and mode C but more advance

Answer 15

Mode S

Question 16

System components of ATC transponder

Answer 16

• Antenna
• Digitizer
• Receiver/Transmitter
• Transponder unit & control head