Devices suggested to meet present needs, as follows: absolute altimeter, radio controlled gyropilot, short-wave 360° D-F, radio drift indicator, radio marker beacons, and electromagnetic cables for indicating location of airport.
Inevitable inventions in aircraft radio
Aero Digest
Aero Digest ; 30 , n 5
1937
Article (Journal)
English
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IuD Bahn | 1998
|Online Contents | 2009
Engineering Index Backfile | 1919
|Two Hundred Fifty Inventions in IL-76 Aircraft
NTIS | 1979
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