AM a7 \ (TWA) Project 6.4 = Determination of Characteristics of Airborne Plush Mounted Antennas and Photo Tubes for Yield Deterwinstior at Extended Ground-to-Air Ranges - A, J, Waters OBJECTIVES To determine the effectiveness of flush mounted airborne antennas and phototubes et various ground-to-air ranges in detecting characteristic low frequency electromagnetic rafiation an! visible radiation, respectively. To determine the temporal end amplitude characteristics of the low : frequency electromagnetic radiation at various groumi-te-eir ranges. To determine the temporal and intensity characteristics of visible radiation at various ground-to-air ranges. To determine the effecta of ambient comiitions upon the satisfactory measurement of the paremeters specifie! in the ‘irat two items. TESTAMENT 2 1 1 2 2 fiducial antennas vhip antenna aynchroniser photohesds DuMont Scopes (1 a 4ual beam, 2 scope cameras 1 sequence camera 1 recorder 1 a single bean) TEGHPIQUE Signal ie received by antenna fed through an emplifier ar then to the scope. The signal ie then photographed, t the recorder, Photohead output is led directly The sequence cemers photographs the blast ‘tirectly for use in correlation of previous data, Distance was approximately (2 miles. RESULTS The signal ves received ant recorie’ by one fiducial antenna apd one woe. BEST AVAILABLE COPY Ne photohead date was obtained beceuse of a bulb failure in the recorder. - 33 = Cw 33 eg