Early Aydin Vector "Freq. Div. Wideband" multiplexer, measuring 11″ x 6″ x 4.5″, with various inputs and outputs on one side, and an Aydin Vector label on the opposite end: "Multiplexer, Freq. Div. Wideband, 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 Peter Gerry Collection.