Radio Navigation

Question 1

VOR stands for?

Answer 1

(Very High frequency Omni-directional Range)

Question 2

VOR perates in VHF range on frequencies _______________ to ___________

Answer 2

108.00Mhz – 117.95Mhz

Question 3

____________ transmits radio beams or radials outward in every direction.

Answer 3

VOR ground station

Question 4

VOR Station transmits infinite numbers of radials, since VOR is considered to be accurate to within 1 degree, __________ are used.

Answer 4

360 radials

Question 5

VOR and their radials are depicted on sectional charts with circles, graduated in degrees called ____________.

Answer 5

compass roses.

Question 6

Symbols of Different Kinds of VOR
(CHECK SA PPT)

Answer 6

VOR, VORTAC, VOR/DME

Question 7

Used by military aircrafts to give the pilot both distance and direction from the ——— station on the ground.

Answer 7

TACAN (Tactical Air Navigation )

Question 8

TACAN operates in ______ frequencies

Answer 8

Ultra High Frequencies

Question 9

A collocated VOR and military navigation aid.

Answer 9

VORTAC

Question 10

The equipment used in civilian aircraft and is A pulse type navigation system that shows the pilot, by an instrument panel indication, the number of nautical miles(NM), between the aircraft and ground station.

Answer 10

DME ( Distance measuring Equipment)

Question 11

Airborne Equipments

Answer 11

1. VOR Antenna
2. Receiver
   3A. VOR Indicator
   3B. DME (Distance Measuring Equipment)
   3C. ADF (Automatic Directional Finder)

Question 12

Parts of VOR Indicator:
– Needle indicates whether you are on your selected course.

Answer 12

CDI (Course Deviation Indicator)

Question 13

Parts of VOR Indicator:
– Indicates whether your selected course will take you to or from the station

Answer 13

TO-FROM Indicator

Question 14

Parts of VOR Indicator:
– Used to choose a course or radial by setting it next to the course index.

Answer 14

OBS (Omni Bearing Selector)

Question 15

Parts of VOR Indicator:
– Where your selected course is placed

Answer 15

Course Index

Question 16

Parts of VOR Indicator:
– The reciprocal or the 180 degrees of the course index.

Answer 16

Reciprocal Course Heading

Question 17

Parts of VOR Indicator:
– Shows you how far you are of course with 2 degree each dot.

Answer 17

Course Deviation Scale

Question 18

Provides Distance information in nautical miles and measures _________.

Answer 18

DME (Distance Measuring Equipment), slant range error

Question 19

Slant range error is greatest when you are at a ________.

Answer 19

high altitude and close to the station

Question 20

The airborne DME equipment consist of a ______ and ________.

Answer 20

transceiver and “shark fin” antenna

Question 21

An airplane’s ___________ uses frequencies from 1,025 to 1,150MHz.

Answer 21

DME interrogator

Question 22

A ground based station for the ADF that transmits on a given frequency in low to medium frequency band between 190 - 1750 khz

Answer 22

NDB (Non-Directional Beacon)

Question 23

The NDB Advantages are Does not rely on __________ principle and travels on curvature of the earth.

Answer 23

line of sight,

Question 24

NDB Disadvantages:
The ___________ Effect Causes needle of the ADF to be deflected towards a nearby electric storm.

Answer 24

Thunderstorm Effect

Question 25

NDB Disadvantages: The ___________ Effect: NDB signals are refracted by the ionosphere returning to earth as a strong sky wave causing interference with normal NDB signals, resulting to a fading signal. .

Answer 25

Twilight Effect

Question 26

NDB Disadvantages: NDB transmitting on similar frequencies and is Significant at night

Answer 26

Interference from other NDB station

Question 27

NDB Disadvantages: The ___________ Effect: NDB signal are reflected by the metals present in the ______

Answer 27

mountain effect

Question 28

NDB Disadvantages: The ___________ Effect: NDB signal bending slightly toward the coastline when crossing at an angle.

Answer 28

Coastal effect

Question 29

The airborne partner of the Non Directional Beacon and Operates on radio compass principle whereby the ADF needle always points towards the NDB station

Answer 29

ADF (Automatic Directional Finder)

Question 30

the ADF Receiver Antenna System Receives the radio signals in the low to medium frequency band of ___________

Answer 30

190 Khz. to 1750 Khz.

Question 31

A Type of ADF Indicator in which 0° is always straight up the nose of the aircraft *Magnetic Bearing = Relative Bearing + Magnetic Heading

Answer 31

Fixed Card

Question 32

A Type of ADF Indicator in which The pilot can rotate the compass card with heading knob.

Answer 32

Rotatable Card