The Attenuator,variable, cataloged under National Stock Number 5985-01-328-1418, is classified within Federal Supply Class 5985 (Antennas, Waveguides, and Related Equipment) of the Electrical and Electronic Equipment Components group. Government technical data includes 16 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-01-328-1418 |
| Item Name | Attenuator,variable |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Status | ACTIVE |
| Impedance Rating in Ohms | 50.0 INPUT-OUTPUT |
| Mounting Facility Type and Quantity | 4 UNTHREADED HOLE(S) |
| FSC Application Data | ANTENNAS,WAVEGUIDES,AND RELATED EQUIP |
| Frequency Range | 0.000 HERTZ MINIMUM AND 1000.000 MEGAHERTZ MAXIMUM |
| Attenuation Accuracy Reference Frequency | 500.0 MEGAHERTZ |
| Segment Attenuation Accuracy in Decibels | -0.50 TO 0.50 |
| Adjustment Device Type and Quantity | 9 TOGGLE |
| Overall Attenuation Range in Decibels | +0.0 TO 22.1 |
| Voltage Standing Wave Ratio | 1.20 |
| Segment Attenuation Range in Decibels | +0.00 TO 0.10 AND +0.10 TO 0.20 AND +0.20 TO 0.30 AND +0.30 TO 0.50 AND +0.50 TO 1.00 AND +1.00 TO 2.00 AND +2.00 TO 3.00 AND +3.00 TO 5.00 AND +5.00 TO 10.00 AND +10.00 TO 22.10 |
| Overall Attenuation Accuracy in Decibels | -0.50 TO 0.50 |
| Attenuation Per Step in Decibels | 0.1 AND 0.2 AND 0.3 AND 0.5 AND 1.0 AND 2.0 AND 3.0 AND 5.0 AND 10.0 AND 22.1 |
| Attenuation Variation Method | STEPPED |
| Application Design | TRANSMISSION LINE |
| Power Rating | 1.0 WATTS AVERAGE |
| Step Position Quantity | 10 |
| 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 |
|---|---|
| 1/439 OPT(SMA) | 3/2 Design control — primary reference U.S. Government activity |
NSN 5985-01-328-1418 is a Attenuator,variable, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
Key specifications for 5985-01-328-1418: Impedance Rating in Ohms: 50.0 INPUT-OUTPUT; Mounting Facility Type and Quantity: 4 UNTHREADED HOLE(S); FSC Application Data: ANTENNAS,WAVEGUIDES,AND RELATED EQUIP; Frequency Range: 0.000 HERTZ MINIMUM AND 1000.000 MEGAHERTZ MAXIMUM. 16 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.