| 11. | Primary radars are a " classical " radar which reflects all kind of echoes, including aircraft and clouds.
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| 12. | The important modes of operation of the primary radar system are the surface surveillance and the air surveillance.
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| 13. | The formations then proceeded to the city of Tsu, Mie, about southwest of Nagoya, the primary radar target.
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| 14. | It is equipped with the following navigation aids : Primary Radar, runway centerline lights, threshold lights, and taxiway lights.
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| 15. | The curving lower reflector is the primary radar, while the flat antenna on top is the secondary radar . ]]
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| 16. | The radar unit is capable of identifying aircraft using secondary radar up to a radius and primary radar coverage to.
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| 17. | Primary radar systems at Mt Hebo AFS included the FPS-24 search radar, and the FPS-26A and FPS-90 height finder radars.
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| 18. | The Fort Worth center's primary radar system is among the five oldest in the nation's 20 air route traffic control centers.
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| 19. | But it took more than six hours to restore the primary radar display system that tracks flights from Illinois to Colorado.
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| 20. | By 8 : 16 a . m ., 59 minutes after the power loss, primary radar systems were returned to operation.
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