The Diplexer, cataloged under National Stock Number 5985-01-357-3883, 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 Spectrum Microwave, Inc.. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-01-357-3883 |
| Primary Part Number | FF3400 |
| Item Name | Diplexer |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Spectrum Microwave, Inc. |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| FF3400 | Spectrum Microwave, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 3-6540-1 | C/1 Advisory reference — outside the item-of-supply concept Spectrum Microwave, Inc. |
| 1D23428H01 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5985-01-357-3883 is a Diplexer, manufactured by Spectrum Microwave, Inc., classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-01-357-3883 has 1 manufacturer part number on file: FF3400 (Spectrum Microwave, Inc.).
Key specifications for FF3400: End Item Identification: MODE-S BEACON INTERROGATOR. 0 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 5985-01-357-3883 has DEMIL Code B. 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.