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of U.S. ARMY RADAR EQUIPMENT PART 1 Early Research and Development - 1918 - 1937 by H. M. DAVIS,
CONFIDENTIAL
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national defense of the United states within the meaning of the Espionage Act, 50 17. S. C. , 31 and 32. as amended. The transmission or the revelation of its contents in any manner to an unauthorized person is prohibited by law. 
Copy No. 27of35copies made xiv plus 69pages and 31 illustrations Historical Section Field office Special Activities Branch Office Service Division Office of the Chief Signal officer Army Service Forces |
Figure 23
1937 RADIO PULSE TRANSMITTER
This directional array, comprising ten horizontal dipoles with an equal
number of reflectors, was used with the 1937 demonstration pulse transmitter.
SCL Annual Report FY 1937, Fig. 8
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