The Attenuator,variable, cataloged under National Stock Number 5985-01-449-5405, 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 Caes Systems Llc. Government technical data includes 14 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-01-449-5405 |
| Primary Part Number | DF-1246 |
| Item Name | Attenuator,variable |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Caes Systems Llc |
| Status | ACTIVE |
| Insertion Loss at Minimum Attenuation in Maximum Decibels | 3.0 |
| Impedance Rating in Ohms | 50.0 INPUT-OUTPUT |
| Mounting Facility Type and Quantity | 3 UNTHREADED HOLE(S) |
| Frequency Range | 0.950 GIGAHERTZ MINIMUM AND 1.250 GIGAHERTZ MAXIMUM |
| Body Style | COAXIAL TYPE |
| Adjustment Device Type and Quantity | 1 ELECTRONIC, VOLTAGE CONTROLLED |
| Overall Attenuation Range in Decibels | +0.0 TO 32.0 |
| Voltage Standing Wave Ratio | 1.50 |
| Unthreaded Mounting Hole Diameter | 0.125 INCHES NOMINAL IN |
| Attenuation Variation Method | CONTINUOUS |
| Application Design | TRANSMISSION LINE |
| Terminal Type and Quantity | 1 CONNECTOR, RECEPTACLE AND 2 CONNECTOR, COAXIAL, FEMALE |
| Power Rating | 100.0 MILLIWATTS AVERAGE AND 60.0 WATTS PEAK |
| Coaxial Connector Series Designation | SMA |
| 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 |
|---|---|
| DF-1246 PRIMARY | Caes Systems Llc (USA) |
| Reference | Meaning |
|---|---|
| C20664-1 | 7/2 Vendor item drawing reference U.S. Government activity |
| DF-32 | 5/9 Secondary reference Caes Systems Llc |
| C20664 | D/9 Drawing number reference only U.S. Government activity |
NSN 5985-01-449-5405 is a Attenuator,variable, manufactured by Caes Systems Llc, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-01-449-5405 has 1 manufacturer part number on file: DF-1246 (Caes Systems Llc).
Key specifications for DF-1246: Insertion Loss at Minimum Attenuation in Maximum Decibels: 3.0; Impedance Rating in Ohms: 50.0 INPUT-OUTPUT; Mounting Facility Type and Quantity: 3 UNTHREADED HOLE(S); Overall Height: 0.560 INCHES NOMINAL IN. 14 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.