aay desired vertical angle over all of the operating frequency range from 1 to 23 megacycles, The transmitting and receiving antennas and the ground plane were in mutual perpendicular planes with the plane of the transmitting antenna oriented 53° to the east of magnetic north. Tonosphere recorder site (C-97 airplane) a. Same as for Rongerik and Kusaie, except that a C-3 Ionosphere recorder was used. This recorder is the same as the C-~2, except for a few modifications and improvements, b, The transmitting antenna in the C-97 was a single wire delta fastened to the lateral extremities of the tail assembly. OPERATIONAL Ground stations at Rongerik and Kusaie, using 15 second sweep operated on normal 24 hour schedule: 5 sweeps per hour until H-15 minutes; thence continuous until H # 8 hours; thence routine, Airborne Station C-97: Routine operation until H-15 minutes; thence continuous using a 30 second sweep time until approximately H ¢ 5 hours. RESULTS Ionosphere stations at Kusaie, Rongerik and the C-97 airborne station operated successfully during this test, Kusaie: The effects obsegt®®for this test were about the same qv as those observed duringMMMM (creRoKEE) except that the arrival time of the disturbance in the F region was approximately 5 minutes earlier at H ¢ 27 minutes, Rongerik: The effects were approximately the same as for, (CHEROKEE). COPIED/DOE LANL RC - 80- o

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