ADF/NDB

Question 1

The ADF allows the aircraft to pick up ___ polarised signals broadcast on _F/_F waveband, by NDBs

Answer 1

vertically, LF MF

Question 2

NDBs use ___ waves modified by ___ waves

Answer 2

surface indirect

Question 3

If the needle is hunting and the signal gets louder and fades away, the ground wave is being contaminated by __ ___.

Answer 3

sky waves

Question 4

_F is used as the range is good enough and the wavelength is (similar/dissimilar) to the aircraft length

Answer 4

MF, dissimilar

Question 5

A typical NDB has a power of __ Watts, and a range of __ to __ NM

Answer 5

25 10 25

Question 6

A long range NDB has a power of ___ Watts, with a range of __ to __ NM

Answer 6

200 50 60

Question 7

The frequency range for NDBs is between ___ and ___ _Hz

Answer 7

190 1750 KHz

Question 8

The minimum signal:noise ratio is _:1, with _ degree accuracy for __% of the time by day

Answer 8

3 7 95

Question 9

Bearings in the published protection ranges should be accurate to within _ degrees by day.

Answer 9

5

Question 10

The tracking accuracy for an NDB approach is within _ degrees

Answer 10

5

Question 11

NDBs are ___ systems, with ___ and ___ transmitters, plus ___ monitors

Answer 11

dual, main, standby, two

Question 12

Standby transmitters have an _ at the end of their ident.

Answer 12

E

Question 13

A locator is an ___

Answer 13

NDB with low power utilised for approach procedures

Question 14

Locators transmit on _F and _F

Answer 14

LF MF

Question 15

Locators can be identified by a ___ letter ident group

Answer 15

2