The Attenuator,fixed, cataloged under National Stock Number 5985-01-144-5505, is classified within Federal Supply Class 5985 (Antennas, Waveguides, and Related Equipment) of the Electrical and Electronic Equipment Components group. Government technical data includes 20 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-01-144-5505 |
| Item Name | Attenuator,fixed |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Status | ACTIVE |
| FSC Application Data | ANTENNAS,WAVEGUIDES,AND RELATED EQUPMENT |
| Frequency Range | 0.000 HERTZ MINIMUM AND 12.400 GIGAHERTZ MAXIMUM |
| Body Style | ROUND, TERMINAL/TERMINALS IN OPPOSITE SURFACE |
| Attenuation Accuracy Reference Frequency | 12.4 GIGAHERTZ |
| Overall Diameter | 0.360 INCHES MAXIMUM IN |
| Voltage Standing Wave Ratio | 1.15 AND 1.20 AND 1.25 |
| Input Impedance Rating in Ohms | 50.0 |
| Mounting Method | CONNECTOR |
| Rf Signal Attenuation in Decibels | 1.0 |
| Attenuation Accuracy in Decibels | -0.30 TO 0.30 |
| Surface Treatment | PASSIVATE BODY |
| Operating Temp Range | -55.0 TO 125.0 CELSIUS DEGC |
| Voltage Standing Wave Ratio Frequency Range | +0.0 TO 4.0 GIGAHERTZ AND +4.0 TO 8.0 GIGAHERTZ AND +8.0 TO 12.4 GIGAHERTZ |
| Application Design | TRANSMISSION LINE |
| Material | STEEL CORROSION RESISTING BODY |
| Unpackaged Unit Weight | 0.350 OUNCES OZ |
| Power Rating | 2.0 WATTS AVERAGE AND 500.0 WATTS PEAK |
| Terminal Type and Quantity | 2 CONNECTOR |
| Output Impedance Rating in Ohms | 50.0 |
| Coaxial Connector Series Designation | SMA AND WPM |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 3M-1 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5985-01-144-5505 is a Attenuator,fixed, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 3040-01-359-2462. Verify interchangeability with system specifications before substitution.
Key specifications for 5985-01-144-5505: FSC Application Data: ANTENNAS,WAVEGUIDES,AND RELATED EQUPMENT; Frequency Range: 0.000 HERTZ MINIMUM AND 12.400 GIGAHERTZ MAXIMUM; Body Style: ROUND, TERMINAL/TERMINALS IN OPPOSITE SURFACE; Attenuation Accuracy Reference Frequency: 12.4 GIGAHERTZ. 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.