Gta PACROSSE Project 6,4-+ Determination of Characteristics of Airborne Flush Mounted Antennas and Phototube for Yield Determination at Extended Ground to Air Ranges - A. J, Waters 1, To determine the effectiveness of flush mounted airborne antennas aad phototubes at various ground-to~-air ranges in detecting characteristic low frequency electromagnetic raiiation and visible radiation, respectively. 2. To determine the temporal and amplitude characteristics of the low frequency electrosagnetic radiation at various ground-to-air ranges, 3. To determine the temporal and intensity characteristics of visible q eijation at various ground-to-air ranges. 4. To determine the effects of ambicnt coniitions upon the ; satisfectory measurenent of the parameters specifiei in items 1 -nd 2 LAP RUMEN PAT TON 2 fituctal catecunas 2 scope cameras lvhip anteona 1 sequznecy osera 1 synchronizer 1 recorder 2 photohsads 2 Dufcnt Scopes (1 a dual beam, la single been) : POENTQUE Signal is received by antenna fed through an amplifier and then to he scope, The signal is then photographed. directly to the recorder, Photc’ead cutput is led The sequence camera photographs the blast directly for use in correlation of previous data, Distance was approx. ivately 13 miles, RESULTS lo? No discernable signal could be seen in the photograph, - 59 - | C 3?