Apparatus of Aeronautical Division of U S Army will operate in conjunction with main beacon which will locate airport to pilot while portable unit will locate runway; transmitter is capable to sending out signals for use with either aural or visual type of beacon receiver; for aural type, 720-cycle tone modulation is placed on carrier.
Portable beacon transmitter for army
Radio Eng
Radio Engineering ; 12 , n 2
1932
Aufsatz (Zeitschrift)
Englisch
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Engineering Index Backfile | 1936
|Laser Transmitter Aims At Laser Beacon
NTRS | 1993
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