megacycles. The tranamitting and receiving antennes snd the ground plane vere in mutual perpendiculer planes with the plane of the trangaitting untenns oriented 53 degr-es to the east of magnetic north. Ionosphere recorder site (C-97 sirplane) Same as for Rongerik and Kusaie except that a C3 Ionosphere recorder vee used. This recorder is the same os the C-2 exoept for a few modifications and improvements. The transaitting antenna in the C-97 was a single wire delte fastened to the lateral extremities of the teil asseabdly. RESULTS *) NS All etetions operated successfully during i) abot, There vere no noticeable effects on the Ionosphere from this teat. BEST AYTOLASLS SORPY ae PM a