The Attenuator,variable, cataloged under National Stock Number 5985-00-318-7828, 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 Microlab/fxr Llc. Government technical data includes 19 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-00-318-7828 |
| Primary Part Number | AV1MT |
| Item Name | Attenuator,variable |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Microlab/fxr Llc |
| Status | ACTIVE |
| Impedance Rating in Ohms | 50.0 INPUT-OUTPUT |
| Mounting Facility Type and Quantity | 2 CONNECTOR |
| Frequency Range | 0.000 GIGAHERTZ MINIMUM AND 2.000 GIGAHERTZ MAXIMUM |
| Body Style | COAXIAL TYPE |
| Attenuation Accuracy Reference Frequency | 1.5 GIGAHERTZ |
| Segment Attenuation Accuracy in Decibels | -0.30 TO 0.30 AND -0.40 TO 0.40 AND -0.50 TO 0.50 |
| Adjustment Device Type and Quantity | 1 KNOB |
| Overall Attenuation Range in Decibels | +0.0 TO 5.0 |
| Voltage Standing Wave Ratio | 1.25 |
| Segment Attenuation Range in Decibels | +0.00 TO 1.00 AND +1.00 TO 1.99 AND +2.00 TO 2.99 AND +3.00 TO 3.99 AND +4.00 TO 4.99 |
| Overall Attenuation Accuracy in Decibels | -0.30 TO 0.90 |
| Attenuation Per Step in Decibels | 1.0 |
| Attenuation Variation Method | STEPPED |
| Operating Temp Range | +0.0 TO 50.0 CELSIUS DEGC |
| Application Design | TRANSMISSION LINE |
| Terminal Type and Quantity | 2 CONNECTOR, COAXIAL, MALE |
| Power Rating | 2.0 WATTS AVERAGE |
| Step Position Quantity | 6 |
| Coaxial Connector Series Designation | TNC |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL D — Destroy Item |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
NSN 5985-00-318-7828 is a Attenuator,variable, manufactured by Microlab/fxr Llc, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-00-318-7828 has 2 manufacturer part numbers on file: AV1MT (Microlab/fxr Llc), 562082 (Lockheed Martin Corporation Div Rms - Mitchel Field).
1 possible match (shared part number, not a government interchangeability claim): 5360-01-499-7196. Verify interchangeability with system specifications before substitution.
Key specifications for AV1MT: Impedance Rating in Ohms: 50.0 INPUT-OUTPUT; Mounting Facility Type and Quantity: 2 CONNECTOR; Overall Height: 1.130 INCHES NOMINAL IN; Frequency Range: 0.000 GIGAHERTZ MINIMUM AND 2.000 GIGAHERTZ MAXIMUM. 19 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 5985-00-318-7828 has DEMIL Code D. 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.