The Attenuator,fixed, cataloged under National Stock Number 5985-00-138-5225, 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 14 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-00-138-5225 |
| Primary Part Number | 8491B-050 |
| Item Name | Attenuator,fixed |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Keysight Technologies Inc |
| Status | ACTIVE |
| Frequency Range | 0.000 HERTZ MINIMUM AND 18.000 GIGAHERTZ MAXIMUM |
| Body Style | ROUND, TERMINAL/TERMINALS IN OPPOSITE SURFACE |
| Overall Diameter | 0.812 INCHES NOMINAL IN |
| Voltage Standing Wave Ratio | 1.20 AND 1.30 AND 1.50 |
| Input Impedance Rating in Ohms | 50.0 |
| Mounting Method | CONNECTOR |
| Rf Signal Attenuation in Decibels | 50.0 |
| Attenuation Accuracy in Decibels | -1.50 TO 1.50 |
| Connection Type Per Function | FEMALE OUTPUT AND MALE INPUT |
| Voltage Standing Wave Ratio Frequency Range | +0.0 TO 8.0 GIGAHERTZ AND +8.0 TO 12.4 GIGAHERTZ AND +12.4 TO 18.0 GIGAHERTZ |
| Application Design | TRANSMISSION LINE |
| Terminal Type and Quantity | 2 CONNECTOR |
| Output Impedance Rating in Ohms | 50.0 |
| Coaxial Connector Series Designation | N |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL D — Destroy Item |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| WA2-50 | Nvision Industries, Inc. Dba Weinschel Associates Div Weinschel Associates (USA) |
| 8491B-050 PRIMARY | Keysight Technologies Inc (USA) |
| 1612-50 | Telephonics Corp/prd Instruments (USA) |
| MDC89158-50 | Dal-Tech Devices, Inc. Dba Dal-Tech Devices Inc Div Dal-Tec Devices, Inc (USA) |
| Reference | Meaning |
|---|---|
| 8491B-050 | 3/9 Design control — primary reference Keysight Technologies, Inc. |
| 1612-50 | 5/9 Secondary reference Peraton Inc |
| 8491B-050 | 5/9 Secondary reference Hewlett-Packard Company Dba HP |
NSN 5985-00-138-5225 is a Attenuator,fixed, manufactured by Keysight Technologies Inc, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-00-138-5225 has 4 manufacturer part numbers on file: WA2-50 (Nvision Industries, Inc. Dba Weinschel Associates Div Weinschel Associates), 8491B-050 (Keysight Technologies Inc), 1612-50 (Telephonics Corp/prd Instruments), MDC89158-50 (Dal-Tech Devices, Inc. Dba Dal-Tech Devices Inc Div Dal-Tec Devices, Inc).
Key specifications for 8491B-050: Frequency Range: 0.000 HERTZ MINIMUM AND 18.000 GIGAHERTZ MAXIMUM; Body Style: ROUND, TERMINAL/TERMINALS IN OPPOSITE SURFACE; Overall Diameter: 0.812 INCHES NOMINAL IN; Voltage Standing Wave Ratio: 1.20 AND 1.30 AND 1.50. 14 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 5985-00-138-5225 has DEMIL Code D. 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.