Observers
HOROWITZ
TEAGUE
LINSCOTT
CHEN
BACKUS
Link
Reference
HOROWITZ, P. and FORSTER, J., "Project Sentinel: Ultra-Narrowband SETI at Harvard/Smithsonian," The Search for Extraterrestrial Life: Recent Developments, M.D. Papagiannis (ed.), D. Reidel Publishing Co., Dordrecht, pp. 291- 303 (1985).
Dual 64K channel real time microprocessor based spectrum analyzer with video archiving & swept LO frequency to test "magic frequencies."