| 31. | GPS receivers used in air navigation have databases which contain named waypoints, radio navigation aids, airports and heliports.
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| 32. | Several Krugs were installed in pairs less than 10 kilometers of each other, apparently for radio navigation purposes.
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| 33. | The radio navigation tower ( German : " Peilturm " ) is used as an art museum and studio.
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| 34. | Other parts of the microwave radio band are used for radars, radio navigation systems, sensor systems, and radio astronomy.
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| 35. | Rigorous training in dead reckoning, timed turns, judging drift from sea current, astral navigation, and radio navigation were conducted.
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| 36. | The tower was equipped with radio navigation and landing aids including precision approach radar, non-directional beacon and omni-directional range.
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| 37. | Five minutes short of Birmingham, the aircraft lost all electrical power and as a result radio navigation and intercom.
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| 38. | When in 1944 the existing radio navigation systems were either being jammed or under physical attach the design was revisited.
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| 39. | These included the development of portable radar systems, and both Sonne long-range radio navigation system set up by the Luftwaffe.
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| 40. | The site was selected as the location for the Orfordness Beacon, one of the earliest experiments in long-range radio navigation.
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