Early Aydin Vector "Freq. Div. Wideband" multiplexer, 11 x 6 x 4.5, with various inputs and outputs on one side, and a label on the opposite end, reading, in part: "19A02020-301, Serial No. 13923AVS0379019, Date of Mfg. 0379, Contract No. NAS8-32066, Part No. 22137000-503." In very good to fine condition. From the collection of aerospace memorabilia specialist Ken Havekotte.
