The Attenuator,variable, cataloged under National Stock Number 5985-00-009-7639, 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 Waveline Inc. Government technical data includes 24 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5985-00-009-7639 |
| Primary Part Number | G128-267-001 |
| Item Name | Attenuator,variable |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Waveline Inc |
| Status | ACTIVE |
| Shaft Type | ROUND |
| Insertion Loss at Minimum Attenuation in Maximum Decibels | 0.5 |
| Waveguide Flange Type | COVER |
| Mounting Facility Type and Quantity | 3 UNTHREADED HOLE(S) |
| Frequency Range | 13.270 GIGAHERTZ MINIMUM AND 13.380 GIGAHERTZ MAXIMUM |
| Shaft Diameter | 0.248 INCHES MINIMUM AND 0.251 INCHES MAXIMUM IN |
| Body Style | WAVEGUIDE TYPE |
| Attenuation Accuracy Reference Frequency | 13.38 GIGAHERTZ |
| Mounting Facility Pattern | THREE POSITION CIRCULAR |
| Adjustment Device Type and Quantity | 1 SHAFT |
| Overall Attenuation Range in Decibels | +0.0 TO 40.0 |
| Voltage Standing Wave Ratio | 1.15 |
| Waveguide Flange Designation | UG-419/U |
| Unthreaded Mounting Hole Diameter | 0.209 INCHES NOMINAL IN |
| Overall Attenuation Accuracy in Decibels | -0.50 TO 0.50 |
| Scale Linearity | LINEAR |
| Attenuation Variation Method | CONTINUOUS |
| Shaft Length | 0.820 INCHES NOMINAL IN |
| Scale Division Quantity | 43 |
| Bolt Circle Diameter | 4.375 INCHES NOMINAL IN |
| Operating Temp Range | +0.0 TO 71.0 CELSIUS DEGC |
| Application Design | WAVEGUIDE |
| Terminal Type and Quantity | 2 FLANGE |
| Power Rating | 400.0 MILLIWATTS AVERAGE |
| 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 |
|---|---|
| G128-267-001 | Waveline Inc (USA) |
| Reference | Meaning |
|---|---|
| G128-267-001 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| G128-267-001 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5985-00-009-7639 is a Attenuator,variable, manufactured by Waveline Inc, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-00-009-7639 has 1 manufacturer part number on file: G128-267-001 (Waveline Inc).
Key specifications for G128-267-001: Shaft Type: ROUND; Insertion Loss at Minimum Attenuation in Maximum Decibels: 0.5; Waveguide Flange Type: COVER; Mounting Facility Type and Quantity: 3 UNTHREADED HOLE(S). 24 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.