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Detail of the antenna's parabolic primary reflector (the white dish itself), feed horn (left, at center of the dish), and secondary reflector (black circle at right, suspended by the four support struts).

Picture 3 of 3.

The lettering on the side of the feed horn reads

RCA 8734507-501

The rendezvous radar at the Air Zoo allows viewing the horn side of the secondary reflector.