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What is the frequency of rotation of the directional beam in a VOR?(a) 20rps(b) 15rps(c) 30rps(d) 50rpsI had been asked this question in a job interview.Asked question is from Point Source Radio Systems topic in division Terrestrial Radio Navigation System of Avionics

Answer»

Correct CHOICE is (c) 30rps

The explanation: The VOR sends out TWO signals. One is a HIGHLY directional signal that ROTATES at a frequency of 30 rps and an omnidirectional signal. The omnidirectional signal is pulsed every time the directional signal coincides with north.



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