Radio Navigation Flashcards
Which class of VDF bearing is accurate to within +/-10degrees
C
A +-2degrees
B +-5degrees
What are QDM QDR QTE QUJ?
Magnetic bearing to station
Magnetic bearing from station
True bearing from station
True bearing to station
WHen would you ask for QTE?
Use for position fixing on chart
What is the difference between RBI and RMI?
Relative bearing indicator, gives bearing of beacon relative to heading. add to heading to get direction to fly to beacon
Radio magnetic indicator, moving card slaved to aircraft heading, needle points to beacon
Give 3 environmental factors affecting the range or accuracy of an NDB.
Coastal refraction
Station interference
Thunderstorms
In which frequency band does a VOR operate?
Very high frequency
What info does a VOR give you?
Bearing to/from the station
Which info does DME display provide?
Slant range to beacon
If you fly over a DME at 6000ft, what will be the minimum range displayed?
1NM
Which part of a TACAN transmission can use?
DME range
Describe, in simple terms, how primary radar works.
pulses sent out in different directions, measures how long to return and which direction
Would a long range radar rotate faster or slower than a short range one?
long range slower
Will CBs be visibl on a radar display?
weather radar yes, otherwise no not accurately, will cause ‘weather clutter’ though
How does SSR work?
Secondary surveillance radar - sends out signal, transponder replies
What info does Mode C transmit?
position and altitude
