Radio Navigation: Basics and Radar

Question 1

NDBs use what bracket of frequencies?

Answer 1

Low and Medium Frequency

Question 2

VORs use what bracket of frequencies?

Answer 2

VHF

Question 3

VHF bracket for VORs are from what to what?

Answer 3

108.000 to 117.950

Question 4

NDBs used for approaches are known as what?

Answer 4

Locators

Question 5

NDB interference errors:

Answer 5

Night effect
Coastal effect
Quadrantal error
Dip error

Question 6

The quadrantal error refers to what?

Answer 6

Metal composition of aircraft acts as an aerial and misleads signal

Question 7

Theoretical maxium receiving distance for a VOR is calculated by:

Answer 7

1.23 x Square Root of (Altitude of Transmitter + Receiver)

Question 8

What does DOC stand for?

Answer 8

Designated Operational Coverage

Question 9

Does PSR require the aircraft to be specially equipped?

Answer 9

No

Question 10

SSR only transmits when?

Answer 10

When it is hit by a radar signal

Question 11

SSR operates in what frequency bracket?

Answer 11

UHF

Question 12

Mode-A only transmits what?

Answer 12

Transponder code

Question 13

Mode A+C transmits what?

Answer 13

Transponder code and pressure altitude

Question 14

VDF stands for?

Answer 14

VHF Direction Finding

Question 15

Why can VDF not be obtained by using just one ATSU?

Answer 15

Distance is not available, so multiple are needed

Question 16

Accuracy of Class A VDF bearings?

Answer 16

2 degrees

Question 17

Accuracy of Class B VDF Bearings?

Answer 17

5 degrees

Question 18

Accuracy of Class C VDF Bearings?

Answer 18

10 degrees

Question 19

The accuracy of Class D VDF bearings is worse than?

Answer 19

10 degrees

Question 20

What is a QDM?

Answer 20

Magnetic heading to a station

Question 21

What is a QDR?

Answer 21

Magnetic heading from a station

Question 22

What is a QUJ?

Answer 22

True heading to a station

Question 23

What is a QTE?

Answer 23

True heading from a station

Question 24

In VDF, what are the two magnetic headings?

Answer 24

QDM and QDR

Question 25

In VDF, what are the two true headings?

Answer 25

QUJ and QTE

Question 26

Of two types of NDB transmissions, what number indicates a long-range beacon?

Answer 26

1 in N0N A1A

Question 27

Of two types of NDB transmissions, what number indicates a short-range beacon?

Answer 27

2 in N0N A2A

Question 28

ADF bearings are considered what?

Answer 28

Magnetic

Question 29

Why are ADF bearings considered magnetic?

Answer 29

Because it is relative to the Directional Indicator which is Magnetic

Question 30

For an NDB, the 'cone of silence' occurs when the aircraft enters what zone?

Answer 30

40 degrees vertically displaced above the NDB

Question 31

During the day, ADF accuracy has what margin of error?

Answer 31

6 degrees

Question 32

VOR stands for?

Answer 32

VHF Omni-directional Range

Question 33

A specific magnetic bearing relative to a VOR is known as a what?

Answer 33

Radial

Question 34

An aircraft's VOR receiver measures what to determine the radial?

Answer 34

Phase difference

Question 35

Radials are always referred to as what in relation to a VOR?

Answer 35

Bearings FROM the station

Question 36

Each small mark on a CDI indicates what?

Answer 36

2 degrees of displacement

Question 37

When will the TO/FROM flag change?

Answer 37

When the aircraft passes the radial that is perpendicular to the CDI radial

Question 38

CDI stands for?

Answer 38

Course Direction Indicator

Question 39

TO/FROM indicator simply indicates whether the aircraft is

Answer 39

On the same side of the VOR as the selected radial

Question 40

A VOR's 'cone of confusion' carries what degree of vertical displacement?

Answer 40

50 degrees

Question 41

A VOR's 'total system' error is

Answer 41

5 degrees

Question 42

VOR range is limited to..

Answer 42

Line of sight

Question 43

Simplified form of how DME is measured?

Answer 43

Round trip delay of aircraft's UHF signal is measured

Question 44

How is DME initially measured?

Answer 44

An aircraft transmits a UHF signal

Question 45

When is the speed measurement and time to station on a DME only valid?

Answer 45

If the aircraft is flying directly to/from the station

Question 46

DME's indicated distance is a measurement of what distance?

Answer 46

Slant range

Question 47

SSR uses a signal in whay frequency bracket?

Answer 47

UHF