Chapter 2 VHF Direction Finding

Question 1

What is the frequency band of a VDF?

Answer 1

118-137 MHz

Question 2

What type of bearings can the VDF give?

Answer 2

True or magnetic

Question 3

What is a QDM?

Answer 3

Mag to station

Question 4

What is a QDR?

Answer 4

Mag from station

Question 5

What is a QUJ?

Answer 5

True to station

Question 6

What is a QTE?

Answer 6

True from station

Question 7

What is the minimum number of bearings for a VDF fix?

Answer 7

2

Question 8

What are the errors associated with VDF?

Answer 8

Interference, multi path signals, cone of confusion, super/sub refraction and sporadic E

Question 9

What are the 4 classes of DF bearing?

Answer 9

A B C D

Question 10

What is the accuracy of each class of DF bearing?

Answer 10

A = +/- 2
B = +/- 5
C = +/- 10
D = less than class C