VOR Flashcards
OPERATION FREQUENCY
~108.00- 117.975 MH
This overlaps wiht the instrmetn landing system ILS which utilises frequency with ODD decimal up to 111.95MHz
Works on the principle of phase difference between two transmission
~refernce phase (RP)
~varaible phase(VP)
Phase diffence :is used to determine radial
Angular difference between corresponding points of two cycles of equal wavelength ,measures in degree
~on 90 radial,the reference phase leads the varaible phase by 90
~on 270 radila,the refence phase lags the variable
Conventional vor
~clockwise rotaion
~RP >freqwuency modulated
~vp» amplitude modutlated
Doppler vor
~anticlockwise rotation
~rp :amplitude modulated
~vp: frequency modu
Types of vor
~conventional VOR(CVOR) first generation with a rotating antenna
~doppler VOR (DVOR): second genration with a fixed antenna which utilises
~en route
~terminal
~test vor (VOT) emits a signal used to test vor indicators
Vors emit an A9W singal
Failure of the vor station to remain within limits may cause
~removoal of ident
~removal of navigation from the carrier wave
~termination of transmission
~
Rmi
Obi/cdi
Hsi