The Attenuator,variable, cataloged under National Stock Number 5985-01-056-1090, 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 Antenna & Radome Research Associates Corp Dba Arra Inc Div Arra Inc. Government technical data includes 17 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-01-056-1090 |
| Primary Part Number | 6804-25B |
| Item Name | Attenuator,variable |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Antenna & Radome Research Associates Corp Dba Arra Inc Div Arra Inc |
| Status | ACTIVE |
| Shaft Type | ROUND, FLATTED |
| Insertion Loss at Minimum Attenuation in Maximum Decibels | 0.5 |
| Bushing Length | 0.500 INCHES NOMINAL IN |
| Mounting Facility Type and Quantity | 2 FLANGE WITH MOUNTING HOLE |
| Frequency Range | 7.900 GIGAHERTZ MINIMUM AND 8.400 GIGAHERTZ MAXIMUM |
| Shaft Diameter | 0.250 INCHES NOMINAL IN |
| Body Style | RECTANGULAR, TERMINALS ON ONE SURFACE |
| Mounting Facility Pattern | TWO POSITION IN-LINE |
| Adjustment Device Type and Quantity | 1 SHAFT |
| Overall Attenuation Range in Decibels | +0.0 TO 25.0 |
| Voltage Standing Wave Ratio | 1.50 |
| Attenuation Variation Method | CONTINUOUS |
| Distance Between Mounting Facility Centers | 1.375 INCHES NOMINAL IN |
| Shaft Length | 0.500 INCHES NOMINAL IN |
| Application Design | TRANSMISSION LINE |
| Terminal Type and Quantity | 2 CONNECTOR, COAXIAL, FEMALE |
| Power Rating | 200.0 MILLIWATTS AVERAGE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL D — Destroy Item |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 6804-25B PRIMARY | Antenna & Radome Research Associates Corp Dba Arra Inc Div Arra Inc (USA) |
| ASM-25-8K/40001 PRIMARY | Merrimac Industries, Inc (USA) |
| A-2742A PRIMARY | Rlc Electronics, Inc (USA) |
| Reference | Meaning |
|---|---|
| SM-A-775613 | 5/9 Secondary reference Advanced Technical Materials, Inc. Dba a T M |
| ASM-25-8K/4001 | 5/9 Secondary reference Merrimac Industries, Inc |
| SM-A-775613 | 7/2 Vendor item drawing reference U.S. Government activity |
NSN 5985-01-056-1090 is a Attenuator,variable, manufactured by Antenna & Radome Research Associates Corp Dba Arra Inc Div Arra Inc, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-01-056-1090 has 3 manufacturer part numbers on file: 6804-25B (Antenna & Radome Research Associates Corp Dba Arra Inc Div Arra Inc), ASM-25-8K/40001 (Merrimac Industries, Inc), A-2742A (Rlc Electronics, Inc).
Key specifications for 6804-25B: Shaft Type: ROUND, FLATTED; Insertion Loss at Minimum Attenuation in Maximum Decibels: 0.5; Bushing Length: 0.500 INCHES NOMINAL IN; Mounting Facility Type and Quantity: 2 FLANGE WITH MOUNTING HOLE. 17 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 5985-01-056-1090 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.