The Attenuator,variable, cataloged under National Stock Number 5985-01-142-2710, 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 Department of the Army Hq United States Army Communications Research and Development Command. Government technical data includes 17 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-01-142-2710 |
| Primary Part Number | B4014878-1 |
| Item Name | Attenuator,variable |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Department of the Army Hq United States Army Communications Research and Development Command |
| Status | ACTIVE |
| Shaft Type | ROUND, FLATTED |
| Insertion Loss at Minimum Attenuation in Maximum Decibels | 0.5 |
| Impedance Rating in Ohms | 50.0 INPUT-OUTPUT |
| Mounting Facility Type and Quantity | 1 THREADED STUD(S) |
| FSC Application Data | ANTENNAS,WAVEGUIDES,AND RELATED EQUIPMENT |
| Frequency Range | 7900.000 MEGAHERTZ MINIMUM AND 8400.000 MEGAHERTZ MAXIMUM |
| Shaft Diameter | 0.250 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN |
| Body Style | COAXIAL TYPE |
| Adjustment Device Type and Quantity | 1 SHAFT |
| Overall Attenuation Range in Decibels | +0.0 TO 40.0 |
| Voltage Standing Wave Ratio | 1.50 |
| Attenuation Variation Method | CONTINUOUS |
| Shaft Length | 0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN |
| Application Design | TRANSMISSION LINE |
| Terminal Type and Quantity | 2 CONNECTOR, COAXIAL, FEMALE |
| Power Rating | 200.0 MILLIWATTS AVERAGE |
| Coaxial Connector Series Designation | SMA |
| 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 |
|---|---|
| B4014878-1 PRIMARY | Department of the Army Hq United States Army Communications Research and Development Command (USA) |
| B4014878-1 | Antenna & Radome Research Associates Corp Dba Arra Inc Div Arra Inc (USA) |
NSN 5985-01-142-2710 is a Attenuator,variable, manufactured by Department of the Army Hq United States Army Communications Research and Development Command, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-01-142-2710 has 2 manufacturer part numbers on file: B4014878-1 (Department of the Army Hq United States Army Communications Research and Development Command), B4014878-1 (Antenna & Radome Research Associates Corp Dba Arra Inc Div Arra Inc).
Key specifications for B4014878-1: Shaft Type: ROUND, FLATTED; Insertion Loss at Minimum Attenuation in Maximum Decibels: 0.5; Impedance Rating in Ohms: 50.0 INPUT-OUTPUT; Mounting Facility Type and Quantity: 1 THREADED STUD(S). 17 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 5985-01-142-2710 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.