The Attenuator,variable, cataloged under National Stock Number 5985-01-075-9134, is classified within Federal Supply Class 5985 (Antennas, Waveguides, and Related Equipment) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Raytheon Company Dba Raytheon Co. Government technical data includes 20 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-01-075-9134 |
| Primary Part Number | SPA-R-30137 |
| Item Name | Attenuator,variable |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Raytheon Company Dba Raytheon Co |
| Status | ACTIVE |
| Insertion Loss at Minimum Attenuation in Maximum Decibels | 0.5 |
| Impedance Rating in Ohms | 50.0 INPUT-OUTPUT |
| Mounting Facility Type and Quantity | 4 UNTHREADED HOLE(S) |
| FSC Application Data | RADAR ANTENNA SUPPORT SETS AND RADOMES,EXCEPT SPECIALLY DESIGNED |
| Frequency Range | 9.000 GIGAHERTZ MINIMUM AND 9.200 GIGAHERTZ MAXIMUM |
| Body Style | COAXIAL TYPE |
| Mounting Facility Pattern | FOUR POSITION RECTANGULAR |
| Adjustment Device Type and Quantity | 1 KNOB |
| Overall Attenuation Range in Decibels | +0.5 TO 10.0 |
| Voltage Standing Wave Ratio | 1.30 |
| Unthreaded Mounting Hole Diameter | 0.125 INCHES NOMINAL IN |
| Overall Attenuation Accuracy in Decibels | -0.50 TO 0.50 |
| Attenuation Variation Method | CONTINUOUS |
| Center to Center Distance Between Mounting Facilities Parallel to Height | 1.630 INCHES MINIMUM AND 1.670 INCHES MAXIMUM IN |
| Operating Temp Range | -29.0 TO 70.0 CELSIUS DEGC |
| Center to Center Distance Between Mounting Facilities Parallel to Width | 1.630 INCHES MINIMUM AND 1.670 INCHES MAXIMUM IN |
| Application Design | TRANSMISSION LINE |
| Terminal Type and Quantity | 1 CONNECTOR, COAXIAL, FEMALE AND 1 CONNECTOR, COAXIAL, MALE |
| Power Rating | 2.0 WATTS PEAK |
| Coaxial Connector Series Designation | SMA |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| SPA-R-30137 PRIMARY | Raytheon Company Dba Raytheon Co (USA) |
| SPA-R-30137 | Raytheon Company (USA) |
| AJ-B43 | Microlab/fxr Llc (USA) |
| Reference | Meaning |
|---|---|
| SPA-R-30137 | 5/9 Secondary reference Raytheon Company Div Corp |
NSN 5985-01-075-9134 is a Attenuator,variable, manufactured by Raytheon Company Dba Raytheon Co, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-01-075-9134 has 3 manufacturer part numbers on file: SPA-R-30137 (Raytheon Company Dba Raytheon Co), SPA-R-30137 (Raytheon Company), AJ-B43 (Microlab/fxr Llc).
Key specifications for SPA-R-30137: Insertion Loss at Minimum Attenuation in Maximum Decibels: 0.5; Impedance Rating in Ohms: 50.0 INPUT-OUTPUT; Mounting Facility Type and Quantity: 4 UNTHREADED HOLE(S); Overall Height: 2.440 INCHES MINIMUM AND 2.600 INCHES MAXIMUM IN. 20 specifications are documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.