The Duplexer-Mixer, cataloged under National Stock Number 5985-01-289-2903, is classified within Federal Supply Class 5985 (Antennas, Waveguides, and Related Equipment) of the Electrical and Electronic Equipment Components group. Government technical data includes 1 specification, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5985-01-289-2903 |
| Item Name | Duplexer-Mixer |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Status | ACTIVE |
| General Characteristics Item Description | WAVEGUIDE FERRITE DUPLEXER |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL D — Destroy Item |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 430061 | 5/9 Secondary reference U.S. Government activity |
| 430061 | 3/9 Design control — primary reference Atlantic Microwave Corporation Div Cobham Electronic Systems |
NSN 5985-01-289-2903 is a Duplexer-Mixer, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 6105-01-500-6913. Verify interchangeability with system specifications before substitution.
Key specifications for 5985-01-289-2903: General Characteristics Item Description: WAVEGUIDE FERRITE DUPLEXER; End Item Identification: AN/APS-133. 1 specification is 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 5985-01-289-2903 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.