VOR | Theory of Operation Flashcards
There is a __ _Hz omniphase signal, received by all stations at a constant phase, and a variable phase signal whose phase changes according to its bearing from North.
30 MHz
The variphase signal is a __ Hz tone that modulates the amplitude of the carrier, and the sidebands are used to make the phase angle of the modulation equal to the azimuth angle.
30
To ease separation, the reference signal frequency modulates a sub-carrier, at ___ Hz
9960
The result is an AM signal, rotating at __ HZ/___RPM.
30 1800
After demodulation, the signals have their phases compared to derive a ___.
bearing
There is a voice channel that can carry ___ Hz Morse
1020
Both signals are in phase when the rotating signal passes ___, but get more out of phase with the increasing number of degrees around the circle.
Magnetic North
The receiver will pick up the reference signal ___, and the maximum point of the variphase signal ___.
first, later
The signal is received by a ___ polarised - antenna, mixed, converted to an intermediate frequency, amplified, detected, and demodulated.
horizontally, V-Dipole
The instrument shows a total deviation of __ degrees.
10
The needle always points to ___
where the radial is
Only when your heading is the ___ direction as the OBS, will the radial be on the same side as the needle.,
same
To calculate the time in minutes, use the formula ___ / ___
seconds / degrees
To calculate the distance, use ___
( Mins x GS ) / Degrees
