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1960's NASA RCA Radio Communications Device; Brass Data Relay Terminal Amplifier Unit? P/N 70A. Condition is "Used". I am not sure where this unit was used or how it was intended; the above is my best guess. The exterior appears to be completely brass. It has an old PO taped to it, but I can't decipher it completely . It has a vacuum tube in one end which has been damaged and broken at the top. The partial Bendix tube is left in the device if anyone wanted to replace it. The unit obviously has been well used by NASA at some point. It is slightly bent in the middle and has had some impact to one end. Please inspect the photos closely for best identification and condition details. Shipped with USPS Priority Class.