ILS | The Localiser

Question 1

The localiser consists of two overlapping lobes of radio energy of _HF

Answer 1

VHF

Question 2

The left lobe is A2 modulated at __ Hz

Answer 2

90

Question 3

The right lobe is A2 modulated at ___ Hz

Answer 3

150

Question 4

The principle is that the difference in the ___ of modulation, or the ratio of the amplitude of the modulation waveform to that of the RF carrier, determines the position of the needle

Answer 4

depth

Question 5

If the angular displacement of the aircraft ___, so does the difference in the depth of modulation

Answer 5

doubles

Question 6

For an ILS/VOR/TACAN/RNAV/GPS, being established is being within ___ scale deflection

Answer 6

half

Question 7

For an NDB, being on course is being within ___

Answer 7

5 degrees

Question 8

The frequency range for a localiser is between ___ and ___ _Hz

Answer 8

108.1 111.975 MHz

Question 9

There are __ localiser channels

Answer 9

40

Question 10

A _ letter ID is transmitted at regular intervals in Morse code, at ___ Hz

Answer 10

3 1020

Question 11

If the localiser exceeds 3 degrees of the runway heading, the first letter will be _

Answer 11

X

Question 12

ILS is _ times more sensitive than VOR

Answer 12

4

Question 13

ILS full needle deflection is . degrees, rather than __ on a VOR

Answer 13

2.5 10

Question 14

One dot deflection means that you’re ___ft off course at the OM/FAF

Answer 14

300

Question 15

One dot deflection means that you’re ___ft off course at the MM

Answer 15

100