Q. What frequency does the marker beacon use for fixes along the airways?

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Q. Which of the following can be used to reinforce the upward beam in a marker beacon?

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Q. What is the frequency of rotation of the directional beam in a VOR?

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Q. Which of the following generates the same field pattern as a vertical dipole antenna?

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Q. What is the time gap between each pulse in an interrogation pulse pair for a DME?

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Q. Why are pulse pairs used in DME instead of single pulses?

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Q. What is the frequency in which the DME transmits?

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Q. Hyperbolic navigational systems are called so because of their hyperbolic lines of position.

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Q. Which one of the following is not a hyperbolic radio system?

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Q. What does Omega and Decca have in common?

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Q. Loran-C is a line of sight navigational system.

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Q. Which of the following is not true with respect to Loran-C?

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Q. What is the minimum number of transmitter stations required for a Loran system?

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Q. Which technique, in Loran, allows the use of single transmitter station in two chains?

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Q. What is the pulse frequency used in Loran?

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Q. _____ is defined as the portion of pules after 65 μsec?

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Q. The short term propagation effects caused by local weather changes are called as ______________

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Q. What is the process of ensuring that the receiver works on ground waves?

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Q. Which of the following is not a function of the monitoring facility in Omega systems?

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Q. Which of the following is false with respect to Omega systems?

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