Chapter 9, ADF

Question 1

ADF antennas are used to determine what aspect of the transmitted signal?

Answer 1

Null signal strength

Question 2

The ADF antennas include

Answer 2

One sense loop and two directional loops

Question 3

ADF operates in the following frequency range

Answer 3

LF to MF

Question 4

Bearing to the tuned ADF station is displayed on the

Answer 4

RMI

Question 5

The purpose of an ADF sense antenna is to

Answer 5

Combine with the loop antenna to determine a station bearing

Question 6

The RMI has two pointers coloured red and
green; these are used to indicate

Answer 6

Two separately tuned ADF stations

Question 7

The bearing source indicator adjacent to the
RMI confirms

Answer 7

ADF or VOR selection

Question 8

NDBs on navigation charts can be identified
by

Answer 8

Two/three letter codes

Question 9

Morse code is used to confirm the NDB’s

Answer 9

Name

Question 10

During sunrise and sunset, ADF transmissions
are affected by

Answer 10

Variations in the ionosphere

Question 11

NDBs associated with the final approach to an
airfield are called

Answer 11

Locator beacons

Question 12

Quadrantal error (QE) is associated with
the

Answer 12

Physical aspects of the aircraft structure

Question 13

ADF ground waves are affected by

Answer 13

Coastal refraction and terrain

Question 14

ADF sky waves are affected by

Answer 14

The ionosphere

Question 15

A BFO can be used to establish

Answer 15

An audio tone for an NDB