The Attenuator,variable, cataloged under National Stock Number 5985-00-994-6809, 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 Keysight Technologies Inc. Government technical data includes 8 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5985-00-994-6809 |
| Primary Part Number | 393A |
| Item Name | Attenuator,variable |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Keysight Technologies Inc |
| Status | ACTIVE |
| Impedance Rating in Ohms | 50.0 INPUT-OUTPUT |
| Mounting Facility Type and Quantity | 4 UNTHREADED HOLE(S) |
| Frequency Range | 500.000 MEGAHERTZ MINIMUM AND 1000.000 MEGAHERTZ MAXIMUM |
| Overall Attenuation Range in Decibels | +5.0 TO 120.0 |
| Overall Attenuation Accuracy in Decibels | -0.575 TO 0.575 |
| Attenuation Variation Method | CONTINUOUS |
| Application Design | TRANSMISSION LINE |
| Power Rating | 200.0 WATTS AVERAGE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 393A PRIMARY | Keysight Technologies Inc (USA) |
| Reference | Meaning |
|---|---|
| 393A | 5/9 Secondary reference Hewlett-Packard Company Dba HP |
| 393A | 3/9 Design control — primary reference Keysight Technologies, Inc. |
NSN 5985-00-994-6809 is a Attenuator,variable, manufactured by Keysight Technologies Inc, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-00-994-6809 has 1 manufacturer part number on file: 393A (Keysight Technologies Inc).
1 possible match (shared part number, not a government interchangeability claim): 5120-01-141-4521. Verify interchangeability with system specifications before substitution.
Key specifications for 393A: Impedance Rating in Ohms: 50.0 INPUT-OUTPUT; Mounting Facility Type and Quantity: 4 UNTHREADED HOLE(S); Overall Height: 2.750 INCHES NOMINAL IN; Frequency Range: 500.000 MEGAHERTZ MINIMUM AND 1000.000 MEGAHERTZ MAXIMUM. 8 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.
NSN 5985-00-994-6809 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.
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.