The Attenuator,fixed, cataloged under National Stock Number 5985-01-078-6820, 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 Dal-Tech Devices, Inc. Dba Dal-Tech Devices Inc Div Dal-Tec Devices, Inc. Government technical data includes 19 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5985-01-078-6820 |
| Primary Part Number | MDC90066-6 |
| Item Name | Attenuator,fixed |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Dal-Tech Devices, Inc. Dba Dal-Tech Devices Inc Div Dal-Tec Devices, Inc |
| Status | ACTIVE |
| FSC Application Data | ANTENNAS,WAVEGUIDES,AND RELATED EQUIPMENT |
| Frequency Range | 0.000 HERTZ MINIMUM AND 0.000 HERTZ MINIMUM AND 12.400 GIGAHERTZ MAXIMUM12.400 GIGAHERTZ MAXIMUM |
| Body Style | ROUND, TERMINAL/TERMINALS IN OPPOSITE SURFACEROUND, TERMINAL/TERMINALS IN OPPOSITE SURFACE |
| Attenuation Accuracy Reference Frequency | 12.4 GIGAHERTZ12.4 GIGAHERTZ |
| Overall Diameter | 0.812 INCHES NOMINAL0.812 INCHES NOMINAL IN |
| Voltage Standing Wave Ratio | 1.20 AND 1.20 AND 1.251.25 |
| Input Impedance Rating in Ohms | 50.050.0 |
| Mounting Method | CONNECTORCONNECTOR |
| Rf Signal Attenuation in Decibels | 6.06.0 |
| Attenuation Accuracy in Decibels | -0.30 TO 0.30-0.30 TO 0.30 |
| Connection Type Per Function | FEMALE INPUT AND FEMALE INPUT AND MALE OUTPUTMALE OUTPUT |
| Voltage Standing Wave Ratio Frequency Range | +0.0 TO 6.0 GIGAHERTZ AND +0.0 TO 6.0 GIGAHERTZ AND +6.0 TO 12.4 GIGAHERTZ+6.0 TO 12.4 GIGAHERTZ |
| Application Design | TRANSMISSION LINETRANSMISSION LINE |
| Material | COPPER ALLOY BODY |
| Unpackaged Unit Weight | 2.400 OUNCES2.400 OUNCES OZ |
| Power Rating | 2.0 WATTS AVERAGE AND 2.0 WATTS AVERAGE AND 300.0 WATTS PEAK300.0 WATTS PEAK |
| Terminal Type and Quantity | 2 CONNECTOR2 CONNECTOR |
| Output Impedance Rating in Ohms | 50.050.0 |
| Coaxial Connector Series Designation | NN |
| 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 |
|---|---|
| MDC90066-6 | Dal-Tech Devices, Inc. Dba Dal-Tech Devices Inc Div Dal-Tec Devices, Inc (USA) |
| Reference | Meaning |
|---|---|
| 757C-6 | 3/2 Design control — primary reference U.S. Government activity |
| 757C6DB | 5/9 Secondary reference U.S. Government activity |
NSN 5985-01-078-6820 is a Attenuator,fixed, manufactured by Dal-Tech Devices, Inc. Dba Dal-Tech Devices Inc Div Dal-Tec Devices, Inc, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-01-078-6820 has 1 manufacturer part number on file: MDC90066-6 (Dal-Tech Devices, Inc. Dba Dal-Tech Devices Inc Div Dal-Tec Devices, Inc).
Key specifications for MDC90066-6: FSC Application Data: ANTENNAS,WAVEGUIDES,AND RELATED EQUIPMENT; Frequency Range: 0.000 HERTZ MINIMUM AND 0.000 HERTZ MINIMUM AND 12.400 GIGAHERTZ MAXIMUM12.400 GIGAHERTZ MAXIMUM; Body Style: ROUND, TERMINAL/TERMINALS IN OPPOSITE SURFACEROUND, TERMINAL/TERMINALS IN OPPOSITE SURFACE; Attenuation Accuracy Reference Frequency: 12.4 GIGAHERTZ12.4 GIGAHERTZ. 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.
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.