An/sps-40 Search Radar Parts

End item NSN parts page 1 of 4
Part Number
NSN
NIIN
006-902-1 O-ring
006824743
03664 Fluid Filtering Disk
008600835
04-0402-3609 Electronic Shielding Gasket
000617536
10-214820-27S Electrical Plug Connector
011944247
10327800 Transistor
003915355
10395891 Pipe Elbow
007202038
1049376 Electrical Contact Ring
003163184
10545435-1 Hub Clamp
008372630
1084213 Stuffing Tube Packing Nut
001776263
112P105 Paper Dielectric Fixed Capacitor
003258797
144597 Grid Tuner
003202774
144597REVE Grid Tuner
003202774
144612REVE Spark Gap
003202792
144716 Annular Ball Bearing
003014002
145255 Radio Frequency Cable Assembly
003688693
147042 Rotary Joint Ring
003490013
147045 Sleeve Spacer
003512694
147859 Fluid Filtering Disk
008600835
149224-2 Variable Attenuator
000946289
149225-1 Variable Attenuator
000946289
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Radar, Search, An/sps-40

Picture of An/sps-40  Search Radar

The AN/SPS-40 is a United States Navy two-dimensional, long range air search radar that is capable of providing contact bearing and range. It was used on Perth-class destroyers, Charles F. Adams-class destroyers, Spruance-class destroyers, Belknap-class cruisers, Leahy-class cruisers, Knox-class frigates, Bronstein-class frigates, Hamilton-class cutters, Raleigh-class amphibious transport docks and many other ship classes. Its "basket" antenna with the over-the-top feed line was a familiar sight throughout the Navy even into the late 1980s. It was replaced by the AN/SPS-49 on newer ships and on ships that received the New Threat Upgrade.

The SPS-40, being a vacuum tube design, was notoriously sensitive to the vibration from shipboard gunfire. A later redesign into a largely solid-state system not only improved its performance (cutting the number of cabinets by more than half) also featured one of the best MTI (Moving Target Indicator) units in the fleet - a rarity in the early 1970s.

AN/SPS-40 antenna on USS Raleigh (LPD-1)

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