The Coupler,antenna, cataloged under National Stock Number 5985-01-309-2829, 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 Frontgrade Technologies Inc.. Government technical data includes 3 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5985-01-309-2829 |
| Primary Part Number | 405-11-1 |
| Item Name | Coupler,antenna |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Frontgrade Technologies Inc. |
| Status | ACTIVE |
| Radio Frequency Rating | 30.0 MEGAHERTZ MINIMUM AND 88.0 MEGAHERTZ MAXIMUM |
| Power Rating | 50.0 WATTS NOMINAL |
| Unpackaged Unit Weight | 1.500 POUNDS LBS |
| 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 |
|---|---|
| 405-11-1 | Frontgrade Technologies Inc. (USA) |
| Reference | Meaning |
|---|---|
| 405-11-1 | 3/9 Design control — primary reference Cobham Exeter, Inc. |
| CU-2457/ARC | 5/2 Secondary reference U.S. Government activity |
NSN 5985-01-309-2829 is a Coupler,antenna, manufactured by Frontgrade Technologies Inc., classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-01-309-2829 has 1 manufacturer part number on file: 405-11-1 (Frontgrade Technologies Inc.).
1 possible match (shared part number, not a government interchangeability claim): 5930-01-505-0751. Verify interchangeability with system specifications before substitution.
Key specifications for 405-11-1: Overall Height: 2.100 INCHES NOMINAL IN; Radio Frequency Rating: 30.0 MEGAHERTZ MINIMUM AND 88.0 MEGAHERTZ MAXIMUM; Power Rating: 50.0 WATTS NOMINAL; End Item Identification: AN/ARC-114,AN/ARC-115,AN/ARC-131,AN/ARC-182(V),AN/ARC-186(V),AN/ARC-201(V) AIRBORNE RADIO SETS. 3 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 5985-01-309-2829 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.