The Attenuator,variable, cataloged under National Stock Number 5985-01-276-2474, 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 Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier. Government technical data includes 10 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-01-276-2474 |
| Primary Part Number | 2899430 |
| Item Name | Attenuator,variable |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
| Status | ACTIVE |
| Insertion Loss at Minimum Attenuation in Maximum Decibels | 1.5 |
| Impedance Rating in Ohms | 50.0 INPUT-OUTPUT |
| Frequency Range | 40.000 MEGAHERTZ MINIMUM AND 80.000 MEGAHERTZ MAXIMUM |
| Body Style | IRREGULAR |
| Adjustment Device Type and Quantity | 1 ELECTRONIC, VOLTAGE CONTROLLED |
| Overall Attenuation Range in Decibels | +0.0 TO 20.0 |
| Voltage Standing Wave Ratio | 1.20 |
| Attenuation Variation Method | CONTINUOUS |
| Application Design | PRINTED CIRCUIT BOARD |
| Terminal Type and Quantity | 5 PIN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| A-MA-100 | Crane Electronics, Inc. Dba Signal Technology Div Olektron (USA) |
| 2899430 PRIMARY | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
| Reference | Meaning |
|---|---|
| A-MA-100 | 5/9 Secondary reference Signal Technology Corporation Div Systems Operation |
NSN 5985-01-276-2474 is a Attenuator,variable, manufactured by Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-01-276-2474 has 2 manufacturer part numbers on file: A-MA-100 (Crane Electronics, Inc. Dba Signal Technology Div Olektron), 2899430 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier).
2 possible matches (shared part number, not a government interchangeability claim): 5305-01-416-8563, 2815-01-596-1591. Verify interchangeability with system specifications before substitution.
Key specifications for 2899430: Insertion Loss at Minimum Attenuation in Maximum Decibels: 1.5; Impedance Rating in Ohms: 50.0 INPUT-OUTPUT; Overall Height: 0.425 INCHES MINIMUM AND 0.435 INCHES MAXIMUM IN; Frequency Range: 40.000 MEGAHERTZ MINIMUM AND 80.000 MEGAHERTZ MAXIMUM. 10 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.