Group of four pieces of Deep Space Network ground support hardware, including: an Apollo Ground Tracking Deep Space Network (DSN) Correlation Filter, measuring 3″ x 8″ x 4″, with a Motorola tag on one end, "Correlation Filter, 90 0 Shifter, Part No. 01-29152F, Serial No. 2," which may contain up to an ounce of gold; and three matching JPL/NASA DSN 70 MHz Limiter Amplifiers, each measuring 8″ x 2″ x 3″, all with JPL/NASA tags identifying them as "Assy No. 9455800-LB, Sch. No. 9455802B," serial numbers "001," "002," and "003." In overall very good to fine condition, with tarnishing to the exterior of the Motorola filter. These devices would be used in communication with robotic spacecraft and reception of satellite data.
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