Q. What is the number of systems used for redundancy in a transmitting station?

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Q. Which of the following methods breaks the signal into finite segments to find the ASF?

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Q. Which of the following advantages does the differential Loran-C provide?

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Q. Which of the following is false about Direct ranging in Loran-C?

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Q. Which mode of Loran-C requires a minimum of 3 transmitters with iterative computation to obtain a fix?

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Q. What is used to indicate that a baseline is not usable?

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Q. What is the region in which Omega signals are confined according to VLF wave guide model known as?

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Q. Which of the following techniques reduces the diurnal variation but does little effect on the phase behaviour of signal of equal path length over different environments?

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

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

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

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

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Q. What is the pulse frequency used in Loran?

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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 minimum number of transmitter stations required for a Loran system?

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

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

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Q. What does Omega and Decca have in common?

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

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