DME | X and Y Channels

Question 1

DME stations use ___ rather than frequencies, they are normally co-located with a VOR/ILS

Answer 1

channels

Question 2

Co-located means that they are within __m, and frequency paired is within ___m

Answer 2

30 600

Question 3

When the DME callsign ends in a Z, the station is ___

Answer 3

associated

Question 4

An associated DME is more than ___m apart, or within ___ft of each other.

Answer 4

600 2000

Question 5

The maximum distance between a VOR and a DME/TACAN installation with the same Morse ID is ___m if used for enroute navigation

Answer 5

600

Question 6

X channels are the most common, with the transponded frequency being __ _Hz higher than the received signal

Answer 6

63 MHz

Question 7

Y stations reply at __ _Hz below

Answer 7

63 MHz

Question 8

X channels are linked with VOR frequencies ending in _

Answer 8

0

Question 9

Y channels are for those ending in _

Answer 9

5

Question 10

_ stations use whole number decimals, _ beacons use half number decimals

Answer 10

X Y

Question 11

Using X and Y channels makes more efficient use of the bandwidth available and reduces ___.

Answer 11

interference

Question 12

DME is normally based with a VOR or TACAN, and has a range of ___nm, with an accuracy better than 1/2nm or _%, whichever is greater

Answer 12

200 3

Question 13

X channels have __ microsecond spacing between pulse pairs for both interrogation and response

Answer 13

12

Question 14

Y channels interrogate at __ microseconds spacing and respond at __ microsecond spacing

Answer 14

36 30

Question 15

There are ___ discrete channels without a possibility of causing mutual interference

Answer 15

256