| 11. | VFR pilots primarily navigate by using the GPS, radio navigation systems, and most importantly pilotage.
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| 12. | Originally known as " LRN " for Loomis Radio Navigation, LORAN was invented by Loomis.
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| 13. | Larsson also wrote essays about radio, radar and radio navigation in Swedish and foreign journals.
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| 14. | Radio direction-finding is the oldest form of radio navigation.
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| 15. | The C-5 again became lost, this time over Newfoundland itself, when its radio navigation equipment malfunctioned.
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| 16. | During World War II, Eastham led the LORAN radio navigation development efforts at MIT's Radiation Laboratory.
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| 17. | Multilateration is a common technique in radio navigation systems, where it is known as hyperbolic navigation.
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| 18. | The maps they supply the pilots are constantly cross-checked and updated using ground-based radio navigation signals.
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| 19. | The Luftwaffe pioneered the use of distance-measuring radio navigation systems with their Y-Ger�t system in 1941.
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| 20. | This aircraft had not been completed and none of the radio navigation systems had been installed.
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