Direction Finding

Question 1

What does VDF stand for?

Answer 1

VHF Direction Finding

Question 2

What common form of direction finding is used by air traffic stations?

Answer 2

VDF

Question 3

How to remember what D in QDM/QDR?

Answer 3

D is in DI - hence magnetic

Question 4

QDM/QDR is related to what form of direction?

Answer 4

Magnetic

Question 5

What is the magnetic heading to the station?

Answer 5

QDM

Question 6

What is the magnetic heading from the station?

Answer 6

QDR

Question 7

What is the true bearing to the station?

Answer 7

QUJ

Question 8

What is the true bearing from the station?

Answer 8

QTE

Question 9

If no VDF bearing accuracy is given, what is the accuracy?

Answer 9

Class B (5 degrees)

Question 10

What is Class A VDF accuracy?

Answer 10

+/- 2 degrees

Question 11

What is Class B VDF accuracy?

Answer 11

+/- 5 degrees

Question 12

What is Class C VDF accuracy?

Answer 12

+/- 10 degrees

Question 13

What is Class D VDF accuracy?

Answer 13

> 10 degrees

Question 14

How to request a true bearing position from a ground station?

Answer 14

True bearing, true bearing, Station Callsign, your callsign, request true bearing, your callsign

Question 15

What must you readback with a true bearing position?

Answer 15

The true bearing and Class of accuracy

Question 16

Alongside your true bearing, what must you readback with a true bearing request?

Answer 16

The Class of accuracy

Question 17

What should you repeat in a true or magnetic bearing request?

Answer 17

Your callsign

Question 18

What should be noted about your callsign in a true/magnetic bearing request?

Answer 18

It should be stated at the start and end of the transmission

Question 19

What does ‘transmit for DF mean’?

Answer 19

You should transmit more so the controller can get your fix

Question 20

If the controller cannot fix you immediately from the initial transition, what would they state?

Answer 20

‘Transmit for DF’