Q. What is the frequency of operation of weather radar?

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Q. What is the range of typical weather radar?

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Q. Whisper shout is used to avoid garble in TCAS.

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Q. TCAS I provide proximity warning only.

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Q. What is the surveillance range of a general TCAS system?

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Q. What does the threshold number for Tau depend on?

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Q. The time between the collision of two aircraft on a collision course is called _____

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Q. Both ATCRBS and mode S have the same range.

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Q. A mode S transponder is silent when it is not interrogated.

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Q. Transmission of modes reply at regular interval to aid TACS is called ________

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Q. The error caused by two aircraft flying close to each other replying to the same interrogation pulse is called ______

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Q. How does mode S identify each aircraft?

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Q. What are the numbers of non-selective interrogations in mode S system?

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Q. Which mode is used for selective calling?

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Q. What is the frequency of interrogation pulse in secondary radar?

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Q. How does mode S system differ from mode A and C?

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Q. What is the time separation for P1 and P3 for mode A secondary radar?

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Q. The undesirable responses from buildings and clouds for the radar pulse are called as __________

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Q. Which mode of the secondary radar gives only altitude?

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Q. The strength of a secondary radar varies inversely with distance to the ______ power.

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