The Dummy Load,electrical, cataloged under National Stock Number 5985-01-283-2490, 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 Development Company Inc Dba Microwave Development Company Inc. Government technical data includes 11 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-01-283-2490 |
| Primary Part Number | 21475-H1200-38-C1A |
| Item Name | Dummy Load,electrical |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Microwave Development Company Inc Dba Microwave Development Company Inc |
| Status | ACTIVE |
| Operating Position | ALL POSITIONS |
| Termination Type | COAXIAL LINE FLANGE AND WAVEGUIDE FLANGE |
| Voltage Standing Wave Ratio | 1.20 |
| Style Designator | WAVEGUIDE MOUNTED |
| Cooling Method | SELF-COOLED |
| Connector End Design | FEMALE |
| Ambient Temp at Full Rated Power | 55.0 CELSIUS DEGC |
| Frequency Range Rating | +4.750 TO 11.000 GIGAHERTZ |
| Voltage Standing Wave Ratio Frequency Range | +4.750 TO 11.000 GIGAHERTZ |
| Power Rating | 5.000 KILOWATTS PEAK AND 1.000 KILOWATTS AVERAGE |
| 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 |
| Part Number | Manufacturer |
|---|---|
| 21475-H1200-38-C1A | Microwave Development Company Inc Dba Microwave Development Company Inc (USA) |
| 475-3C-SMA-F-30 | Frontgrade Technologies Inc. (USA) |
| R81-209 | Microwave Engineering Corporation (USA) |
| Reference | Meaning |
|---|---|
| R81E-PS-30-SMA | 5/9 Secondary reference Microwave Engineering Corporation |
| 10109863-101 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5985-01-283-2490 is a Dummy Load,electrical, manufactured by Microwave Development Company Inc Dba Microwave Development Company Inc, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-01-283-2490 has 3 manufacturer part numbers on file: 21475-H1200-38-C1A (Microwave Development Company Inc Dba Microwave Development Company Inc), 475-3C-SMA-F-30 (Frontgrade Technologies Inc.), R81-209 (Microwave Engineering Corporation).
Key specifications for 21475-H1200-38-C1A: Operating Position: ALL POSITIONS; Termination Type: COAXIAL LINE FLANGE AND WAVEGUIDE FLANGE; Voltage Standing Wave Ratio: 1.20; Style Designator: WAVEGUIDE MOUNTED. 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.