Western Electric Project 661

Project 661 appears to have been a special package designed for Western.  It contains a brace of GPT-750's, configured for both AM (plate-modulated) and SSB (using an external SBE).  The package also contains a pair of GPR-90RX's with MSR SSB converters, and an RTC to control the transmitters.  There are also several patch panels, what may be special antenna couplers, and 2 speaker panels.  The date for this assembly isn't clear, but the GPT-750's are -1's.  The first GPT-750 drawings appeared in 1955, and it appears that the cabinet re-design happened in 1956, so the evidence suggests that Project 661 was built in 1955 or early '56.

586.2-1  If you recognize anyone in these photos, please let me know!	No info on photo.