The Attenuator,variable, cataloged under National Stock Number 5985-00-500-7069, 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 Meggitt (new Hampshire), Inc. Government technical data includes 15 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5985-00-500-7069 |
| Primary Part Number | RFB540-73 |
| Item Name | Attenuator,variable |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Meggitt (new Hampshire), Inc |
| Status | ACTIVE |
| Impedance Rating in Ohms | 73.0 INPUT-OUTPUT |
| Mounting Facility Type and Quantity | 2 THREADED HOLE(S) |
| Frequency Range | 0.000 MEGAHERTZ MINIMUM AND 225.000 MEGAHERTZ MAXIMUM |
| Mounting Facility Pattern | TWO POSITION IN-LINE |
| Overall Attenuation Range in Decibels | +0.0 TO 10.0 |
| Mounting Facility Screw Thread Series Designator | UNF |
| Overall Attenuation Accuracy in Decibels | -0.10 TO 0.10 |
| Attenuation Per Step in Decibels | 1.0 AND 2.0 AND 3.0 AND 4.0 |
| Attenuation Variation Method | STEPPED |
| Distance Between Mounting Facility Centers | 5.625 INCHES NOMINAL IN |
| Mounting Thread Quantity | 32 PER INCH |
| Mounting Facility Nominal Screw Thread Diameter | 0.190 INCHES IN |
| Application Design | TRANSMISSION LINE |
| Power Rating | 500.0 WATTS AVERAGE |
| Step Position Quantity | 4 |
| 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 |
|---|---|
| RFB540-73 PRIMARY | Meggitt (new Hampshire), Inc (USA) |
| Reference | Meaning |
|---|---|
| SP20003-1 | 5/9 Secondary reference Nortel Networks France |
NSN 5985-00-500-7069 is a Attenuator,variable, manufactured by Meggitt (new Hampshire), Inc, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-00-500-7069 has 1 manufacturer part number on file: RFB540-73 (Meggitt (new Hampshire), Inc).
Key specifications for RFB540-73: Impedance Rating in Ohms: 73.0 INPUT-OUTPUT; Mounting Facility Type and Quantity: 2 THREADED HOLE(S); Overall Height: 2.125 INCHES NOMINAL IN; Frequency Range: 0.000 MEGAHERTZ MINIMUM AND 225.000 MEGAHERTZ MAXIMUM. 15 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.