The Coupler,directional, cataloged under National Stock Number 5985-00-230-4979, 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 Bae Systems Information and Electronic Systems Integration Inc.. Government technical data includes 7 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-00-230-4979 |
| Primary Part Number | G128-304-001 |
| Item Name | Coupler,directional |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Bae Systems Information and Electronic Systems Integration Inc. |
| Status | ACTIVE |
| FSC Application Data | ANTENNAS,WAVEGUIDES,AND RELATED EQUIPMENT |
| Usage Design | MAIN LINE TERMINAL FITTING |
| Power Loss in Decibels | 15.5 AND 17.0 AND 26.0 |
| Identifying Number | TERMINAL FITTING UG419/U |
| Design Type | BIDIRECTIONAL |
| Radio Frequency Rating | 13.270 GIGAHERTZ MINIMUM AND 13.405 GIGAHERTZ MAXIMUM |
| Unit Type | WAVEGUIDE |
| 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 |
|---|---|
| G128-304-001 PRIMARY | Bae Systems Information and Electronic Systems Integration Inc. (USA) |
| G128-304-001 | Microwave Engineering Corporation (USA) |
| Reference | Meaning |
|---|---|
| G128-304-001 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| G128-304-001 | 5/9 Secondary reference Ward Leonard Ct Llc |
| G128-304-001 | 5/9 Secondary reference U.S. Government activity |
| G128-304-001 | 5/9 Secondary reference U.S. Government activity |
NSN 5985-00-230-4979 is a Coupler,directional, manufactured by Bae Systems Information and Electronic Systems Integration Inc., classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-00-230-4979 has 2 manufacturer part numbers on file: G128-304-001 (Bae Systems Information and Electronic Systems Integration Inc.), G128-304-001 (Microwave Engineering Corporation).
Key specifications for G128-304-001: FSC Application Data: ANTENNAS,WAVEGUIDES,AND RELATED EQUIPMENT; Usage Design: MAIN LINE TERMINAL FITTING; Power Loss in Decibels: 15.5 AND 17.0 AND 26.0; Identifying Number: TERMINAL FITTING UG419/U. 7 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 5985-00-230-4979 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.