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DTIC ADA181539: Antenna Location Survey Report for the AN/ALQ-156 and AN/ALQ-162 Systems.

This report describes tests performed on the antenna portion of the AN/ALQ-156 and AN/ALQ-162 systems for the RC-12D aircraft. The AN/ALQ-156 antenna configuration consists of four antennas. One pair mounts symmetrically on the nose, with beam center oriented 45 deg each side, looking forward. The other pair mounts symmetrically near the tail, oriented 45 deg each side, looking aft. One antenna of each pair was tested, with the other antenna in the pair assumed to be symmetrical. These antennas were tested at three frequencies, designated as F1, F2 and F3, for elevations of +50 deg to -50 deg about the horizon and for 360 deg in azimuth. The AN/ALQ-162 antenna configuration consists of two antennas. One antenna mounts on the nose, with the beam center oriented at 0 deg in azimuth and elevation. The other antenna mounts in the horizontal tail bullet, oriented at 0 deg in elevation and 180 deg in azimuth. These antennas were tested at nine frequencies in low, mid, and high bands for elevations of +40 deg through -40 = deg about the horizon and for 360 deg in azimuth.

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