oo OS om desired vertical angle ower all of the operating frequency range froa 1 to 23 pegacyeles, The transmitting and receiving antennas and the ground plane were in mutual perpendicular planes with the plane of the trananit' ing antenna oriented 53° to the east of magnetic north, . site Seme as for Rongerik and Kusaie, except that a C-3 Ionosphere recorder was used, Thie recorder is the same as the C-2, except for a fev modifications ap! improvements. The traneitting antenna in the C-97 was ea single vire delta fastene’ to the laterel extremities of the teil asseably. OPERATIONAL Ground stations at Rongerik ani Kusaie, using 15 secord sveep operated op normal 24 hour schetule: 5 sveepe per hour until A-15 sinutes; thence continuous until BH + & hours; thence rcutim . Airborne Station C-97: Routine operation until H-15 minutes; thence continuous using a % second sweep time until approximately H + 5 hours, RESULTS All stations operate’ successfully during this test. There vere no poticeable effects on the Ionosphere from this test, BEST AVAILABLE COPY aly - 32-