NASA NTRS · 19980227852
Project Echo: Receiving System
Abstract
A tracking horn-reflector antenna, a maser preamplifier (and standby parametric preamplifier), and a special FM demodulator were combined to form a low-noise receiving system which made possible the establishment of a high-quality voice circuit via the Echo I passive satellite. This paper describes the 2390-Mc receiving system located at the Bell Telephone Laboratories facility in Holmdel, New Jersey.
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Ohm, E. A.. 1961-12-01. Project Echo: Receiving System. https://ntrs.nasa.gov/citations/19980227852
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