The Attenuator,fixed, cataloged under National Stock Number 5985-01-077-2030, 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 Microwave Engineering Corporation. Government technical data includes 11 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-01-077-2030 |
| Primary Part Number | 13820-2 |
| Item Name | Attenuator,fixed |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Microwave Engineering Corporation |
| Status | ACTIVE |
| FSC Application Data | ANTENNAS,WAVEGUIDES AND RELATED EQUIP. |
| Frequency Range | 8.000 GIGAHERTZ MINIMUM AND 8.000 GIGAHERTZ MINIMUM AND 12.400 GIGAHERTZ MAXIMUM12.400 GIGAHERTZ MAXIMUM |
| Body Style | RECTANGULAR, TERMINAL/TERMINALS ON OPPOSITE SURFACESRECTANGULAR, TERMINAL/TERMINALS ON OPPOSITE SURFACES |
| Attenuation Accuracy Reference Frequency | 9.6 GIGAHERTZ9.6 GIGAHERTZ |
| Voltage Standing Wave Ratio | 1.151.15 |
| Mounting Method | TERMINAL WITH MOUNTING HOLESTERMINAL WITH MOUNTING HOLES |
| Rf Signal Attenuation in Decibels | 30.030.0 |
| Attenuation Accuracy in Decibels | -0.10 TO 0.10-0.10 TO 0.10 |
| Surface Treatment | ENAMEL BODY |
| Application Design | WAVEGUIDEWAVEGUIDE |
| Terminal Type and Quantity | 2 FLANGE2 FLANGE |
| 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 |
|---|---|
| 13820-2 PRIMARY | Microwave Engineering Corporation (USA) |
| Reference | Meaning |
|---|---|
| 13820-2 | 3/9 Design control — primary reference Lucas Aerospace Communications and Electronics Inc |
NSN 5985-01-077-2030 is a Attenuator,fixed, manufactured by Microwave Engineering Corporation, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-01-077-2030 has 1 manufacturer part number on file: 13820-2 (Microwave Engineering Corporation).
2 possible matches (shared part number, not a government interchangeability claim): 5985-01-480-4958, 5305-01-584-0046. Verify interchangeability with system specifications before substitution.
Key specifications for 13820-2: FSC Application Data: ANTENNAS,WAVEGUIDES AND RELATED EQUIP.; Frequency Range: 8.000 GIGAHERTZ MINIMUM AND 8.000 GIGAHERTZ MINIMUM AND 12.400 GIGAHERTZ MAXIMUM12.400 GIGAHERTZ MAXIMUM; Body Style: RECTANGULAR, TERMINAL/TERMINALS ON OPPOSITE SURFACESRECTANGULAR, TERMINAL/TERMINALS ON OPPOSITE SURFACES; Attenuation Accuracy Reference Frequency: 9.6 GIGAHERTZ9.6 GIGAHERTZ. 11 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.