This report comprises a discussion of problems and requirements of instrumentation for communication between ground stations and a man-made satellite on an orbit above the earth's equator. Means for obtaining position-yielding observations of the satellite are also discussed and recommendations made. The problems of observation and communication during the launching operation differ considerably from those encountered after the orbit is established. The report begins with a survey of the pertinent information about the construction and launching of a satellite as found in the other satellite reports (see references). In particular, space, weight, and available power limitations in the satellite are stated.
