Air Navigation question bank

VHF Direction Finder: DGCA Air Navigation questions

5 sample questions from Oxford, with the correct answer shown.

Sample questions

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Question 1

An aircraft has to communicate with a VHF station at a range of 300 NM, if the ground station is situated 2500 ft AMSL which of the following is the lowest altitude at which contact is likely to be made?

Question 2

Class B VHF DF bearings are accurate to within:

Question 3

A VDF QDM given without an accuracy classification may be assumed to be accurate to within:

Question 4

An aircraft at altitude 9000 ft wishes to communicate with a VHF/DF station that is situated at 400 ft AMSL. What is the maximum range at which contact is likely to be made?

Question 5

An aircraft is passed a true bearing from a VDF station of 353 degrees. If variation is 8 degrees East and the bearing is classified as B then the:

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