| 11. | Aircraft carry transponders that transmit codes on reception of the pulse.
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| 12. | Soon after the introduction of radar, the radio transponder appeared.
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| 13. | In the 1960s transponders removed the need to use television cameras.
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| 14. | This is a backup in case a transponder fails to read.
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| 15. | A transponder usually has enough bandwidth to broadcast approximately 10 channels.
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| 16. | The entire incident was a misunderstanding caused by a malfunctioning transponder.
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| 17. | Opened in November 2012, the HOT lanes require Fastrak transponders.
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| 18. | Typical transponders each have a bandwidth between 27 and 50 MHz.
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| 19. | The space segment will consist of one geo-navigation transponder.
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| 20. | The aircraft is equipped with Mode S transponder for flight identification.
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