The Mixer,crystal,waveguide, cataloged under National Stock Number 5985-01-139-4144, 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 Keysight Technologies Inc. Government technical data includes 4 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-01-139-4144 |
| Primary Part Number | R422C |
| Item Name | Mixer,crystal,waveguide |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Keysight Technologies Inc |
| Status | ACTIVE |
| Signal Input Terminal Designator | WR28 |
| Frequency Range Rating | +26.5 TO 40.0 GIGAHERTZ |
| Signal Output Terminal Designator | UG-599/U |
| Insertion Loss in Decibels | 2.0 |
| 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 |
|---|---|
| R422C | Keysight Technologies, Inc. (USA) |
| FC745-0002-422N | Bae Systems Maritime Services (GBR) |
| R422C PRIMARY | Keysight Technologies Inc (USA) |
| HPR422C | Hewlett-Packard Ltd (GBR) |
| Reference | Meaning |
|---|---|
| R422C | 5/9 Secondary reference Keysight Technologies, Inc. |
| R422A-001 | 5/9 Secondary reference Hewlett-Packard Company Dba HP |
| R422C | 3/9 Design control — primary reference Hewlett-Packard Co Video Communication Div |
NSN 5985-01-139-4144 is a Mixer,crystal,waveguide, manufactured by Keysight Technologies Inc, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-01-139-4144 has 4 manufacturer part numbers on file: R422C (Keysight Technologies, Inc.), FC745-0002-422N (Bae Systems Maritime Services), R422C (Keysight Technologies Inc), HPR422C (Hewlett-Packard Ltd).
Key specifications for R422C: Signal Input Terminal Designator: WR28; Frequency Range Rating: +26.5 TO 40.0 GIGAHERTZ; Signal Output Terminal Designator: UG-599/U; Insertion Loss in Decibels: 2.0. 4 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.