VOR

Question 1

VOR

Answer 1

VHF Omnidirectional Range

Question 2

VOR Frequency

Answer 2

VHF 108 to 117.95
from 108 to 112 only even number 108.0 - 108. 02 .20 .25…

identification keyd AM audio every 30 second

A9W horizontal polarization

doppler VOR 30 Hz

Question 3

Type of VOR

Answer 3

EN ROUTE 112 to 117.95 200 W 200 NM
TERMINAL 108 to 11.85 50 W 25 NM
BROADCAST ATIS
VOT -> TEST radial 360 +-4

Question 4

principle of operation

Answer 4

phase comparison between 2 signal, reference and variable, the angle between the 2 it give a phase and it is the radial from the beacon.
Non directional antenna connected to a rotating loop antenna that rotate at 30 rps create a limacon.. Non direction is the reference and il 30 hz FM while the limacon is 30 Hz AM.

Question 5

CVOR

Answer 5

single antenna less precise

Question 6

DVOR

Answer 6

it use the doppler effect with 360 antenna
reference signal 30 AM
variphase 30 FM

Question 7

automatic site monitor

Answer 7

phase difference > 1
signal strenght reduce of 15%
monitor fails

DON’T USE IF NO IDENTIFICATION

Question 8

errors

Answer 8

site(obstacle neat Tx, error reduce in DVOR)
propagation(bends, scalopping terrain)
airborn equipment

Question 9

Accurancy

Answer 9

+- 5° all day

Question 10

range

Answer 10

Tx power en route 200 W

Terminal 50 W

Question 11

DOC

Answer 11

designated Operational Coverage to avoid inteference and is in protected range

Question 12

cone of confusion

Answer 12

when fly above the VOR it is present a cone of confusion where the a/c lose the signal.
the time depends of the height speed and angle of cone( minimum 40°)

Question 13

airborne equipment

Answer 13

aerial
reciever and control unit
indicator that can be
       OBI Omnibearing indicato
       RMI Radiomagnetic indicator
       Horizontal situation indicator