The Attenuator,variable, cataloged under National Stock Number 5985-01-339-4301, 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 Antenna & Radome Research Associates Corp Dba Arra Inc Div Arra Inc. Government technical data includes 2 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-01-339-4301 |
| Primary Part Number | 4684-30U |
| Item Name | Attenuator,variable |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Antenna & Radome Research Associates Corp Dba Arra Inc Div Arra Inc |
| Status | ACTIVE |
| Frequency Range | 2.800 GIGAHERTZ MINIMUM AND 3.300 GIGAHERTZ MAXIMUM |
| Power Rating | 15.0 WATTS AVERAGE |
| 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 |
|---|---|
| 138C139H04 | Northrop Grumman Support Services Corp (USA) |
| 4684-30U PRIMARY | Antenna & Radome Research Associates Corp Dba Arra Inc Div Arra Inc (USA) |
| Reference | Meaning |
|---|---|
| 138C139H04 | 5/9 Secondary reference U.S. Government activity |
NSN 5985-01-339-4301 is a Attenuator,variable, manufactured by Antenna & Radome Research Associates Corp Dba Arra Inc Div Arra Inc, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-01-339-4301 has 2 manufacturer part numbers on file: 138C139H04 (Northrop Grumman Support Services Corp), 4684-30U (Antenna & Radome Research Associates Corp Dba Arra Inc Div Arra Inc).
Key specifications for 4684-30U: Frequency Range: 2.800 GIGAHERTZ MINIMUM AND 3.300 GIGAHERTZ MAXIMUM; Power Rating: 15.0 WATTS AVERAGE. 2 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.