The Coupler,rotary,radio Frequency, cataloged under National Stock Number 5985-01-354-4142, 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.. Government technical data includes 5 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-01-354-4142 |
| Primary Part Number | FRJ3304-1 |
| Item Name | Coupler,rotary,radio Frequency |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Spectrum Microwave, Inc. |
| Status | ACTIVE |
| Overall Diameter | 3.249 INCHES MINIMUM AND 3.250 INCHES MAXIMUM IN |
| Input Impedance Rating in Ohms | 50.0 |
| Radio Frequency Rating | 0.85 GIGAHERTZ MINIMUM AND 4.00 GIGAHERTZ MAXIMUM |
| Unit Type | COAXIAL LINE |
| Output Impedance Rating in Ohms | 50.0 |
| 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 |
|---|---|
| FRJ3304-1 | Spectrum Microwave, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 653088-002 | 3/9 Design control — primary reference Watkins-Johnson Co |
NSN 5985-01-354-4142 is a Coupler,rotary,radio Frequency, manufactured by Spectrum Microwave, Inc., classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-01-354-4142 has 1 manufacturer part number on file: FRJ3304-1 (Spectrum Microwave, Inc.).
Key specifications for FRJ3304-1: Overall Diameter: 3.249 INCHES MINIMUM AND 3.250 INCHES MAXIMUM IN; Input Impedance Rating in Ohms: 50.0; Radio Frequency Rating: 0.85 GIGAHERTZ MINIMUM AND 4.00 GIGAHERTZ MAXIMUM; Overall Length: 2.250 INCHES NOMINAL IN. 5 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.