The Attenuator,fixed, cataloged under National Stock Number 5985-01-408-9801, 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 Res-Net Microwave Inc Dba Res-Net Microwave, Inc. Government technical data includes 17 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-01-408-9801 |
| Primary Part Number | BR18-250 |
| Item Name | Attenuator,fixed |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Res-Net Microwave Inc Dba Res-Net Microwave, Inc |
| Status | ACTIVE |
| Frequency Range | 960.000 MEGAHERTZ MINIMUM AND 1215.000 MEGAHERTZ MAXIMUM |
| Body Style | RECTANGULAR TERMINAL/TERMINALS ON ONE SURFACE |
| Precious Material | GOLD |
| Voltage Standing Wave Ratio | 1.15 |
| Input Impedance Rating in Ohms | 50.0 |
| Mounting Method | TERMINAL |
| Rf Signal Attenuation in Decibels | 0.5 |
| Attenuation Accuracy in Decibels | -0.125 TO 0.125 |
| Surface Treatment | NICKEL BODY |
| Precious Material and Location | CONTACT SURFACES GOLD |
| Operating Temp Range | -55.0 TO 125.0 CELSIUS DEGC |
| Voltage Standing Wave Ratio Frequency Range | +960.0 TO 1215.0 MEGAHERTZ |
| Application Design | TRANSMISSION LINE |
| Material | COPPER BODY |
| Power Rating | 30.0 WATTS AVERAGE |
| Terminal Type and Quantity | 3 TAB, SOLDER LUG |
| Output Impedance Rating in Ohms | 50.0 |
| 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 |
|---|---|
| BR18-250 PRIMARY | Res-Net Microwave Inc Dba Res-Net Microwave, Inc (USA) |
| Reference | Meaning |
|---|---|
| 379-069-250 | 5/9 Secondary reference Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems |
| A3RC35-25 | 5/9 Secondary reference Caes Systems Llc |
NSN 5985-01-408-9801 is a Attenuator,fixed, manufactured by Res-Net Microwave Inc Dba Res-Net Microwave, Inc, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-01-408-9801 has 1 manufacturer part number on file: BR18-250 (Res-Net Microwave Inc Dba Res-Net Microwave, Inc).
Key specifications for BR18-250: Overall Height: 0.160 INCHES MAXIMUM IN; Frequency Range: 960.000 MEGAHERTZ MINIMUM AND 1215.000 MEGAHERTZ MAXIMUM; Body Style: RECTANGULAR TERMINAL/TERMINALS ON ONE SURFACE; Precious Material: GOLD. 17 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 5985-01-408-9801 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.