The Attenuator,variable, cataloged under National Stock Number 5985-01-264-7490, is classified within Federal Supply Class 5985 (Antennas, Waveguides, and Related Equipment) of the Electrical and Electronic Equipment Components group. Government technical data includes 16 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-01-264-7490 |
| Item Name | Attenuator,variable |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Status | ACTIVE |
| Insertion Loss at Minimum Attenuation in Maximum Decibels | 0.4 |
| Impedance Rating in Ohms | 50.0 OUTPUT |
| Mounting Facility Type and Quantity | 12 UNTHREADED HOLE(S) |
| Frequency Range | 520.000 MEGAHERTZ MINIMUM AND 560.000 MEGAHERTZ MAXIMUM |
| Body Style | COAXIAL TYPE |
| Adjustment Device Type and Quantity | 1 ELECTRONIC, PROGRAMMABLE |
| Overall Attenuation Range in Decibels | +0.0 TO 55.5 |
| Voltage Standing Wave Ratio | 1.30 |
| Unthreaded Mounting Hole Diameter | 0.162 INCHES NOMINAL IN |
| Overall Attenuation Accuracy in Decibels | -0.60 TO 0.60 |
| Attenuation Per Step in Decibels | 0.75 |
| Attenuation Variation Method | STEPPED |
| Application Design | TRANSMISSION LINE |
| Terminal Type and Quantity | 2 CONNECTOR, COAXIAL, FEMALE AND 11 TURRET |
| Step Position Quantity | 74 |
| 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 |
| Reference | Meaning |
|---|---|
| AU-137 | 5/9 Secondary reference Hyletronics Limited Partnership |
| AU-137 | 3/9 Design control — primary reference Litton Systems Inc Hyletronics Group-Airtron Div |
| 2900003-2 | 7/2 Vendor item drawing reference Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
NSN 5985-01-264-7490 is a Attenuator,variable, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
Key specifications for 5985-01-264-7490: Insertion Loss at Minimum Attenuation in Maximum Decibels: 0.4; Impedance Rating in Ohms: 50.0 OUTPUT; Mounting Facility Type and Quantity: 12 UNTHREADED HOLE(S); Overall Height: 1.620 INCHES NOMINAL IN. 16 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.