Q. What type of transmitter is used in a Decca system?

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Q. _____ acts as a coarse tuning device for the antenna?

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Q. Which of the following type is not used in an Omega system?

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Q. What type of transmission is used in Omega system?

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Q. What is the use of notch filters in Loran-C receivers?

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Q. HCGs are the power generators of the Loran-C transmitter stations.

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Q. In Omega system, a given frequency is transmitted by only one station at any given time.

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Q. Which of the following derives all the signals needed by the transmitter from the timer?

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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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