The Switch,radio Frequency Transmiss, cataloged under National Stock Number 5985-01-690-6943, 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 Dow-Key Microwave Llc. Government technical data includes 23 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-01-690-6943 |
| Primary Part Number | 81DD1BB78B32 |
| Item Name | Switch,radio Frequency Transmiss |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Dow-Key Microwave Llc |
| Status | ACTIVE |
| Mounting Facility Type and Quantity | 6 CONNECTOR |
| Voltage Standing Wave Ratio | 1.20 FIRSTUNABLE TO DECODE |
| Voltage Standing Wave Ratio | 1.30 SECONDUNABLE TO DECODE |
| Voltage Standing Wave Ratio | 1.40 THIRDUNABLE TO DECODE |
| Voltage Standing Wave Ratio | 1.50 FOURTHUNABLE TO DECODE |
| Voltage Standing Wave Ratio | 1.80 FIFTHUNABLE TO DECODE |
| Pole Quantity | 1 |
| Connector End Design | FEMALE |
| Unpackaged Unit Weight | 4.0 OUNCES OZ |
| Minimum Crosstalk Rating in Decibels | 60.0 FOURTH |
| Minimum Crosstalk Rating in Decibels | 50.0 FIFTH |
| Minimum Crosstalk Rating in Decibels | 65.0 SECOND |
| Minimum Crosstalk Rating in Decibels | 65.0 THIRD |
| Minimum Crosstalk Rating in Decibels | 70.0 FIRST |
| Minimum Crosstalk Rating in Decibels | 70.0 FIRSTUNABLE TO DECODE |
| Insertion Loss in Decibels | 0.20 FIRSTUNABLE TO DECODE |
| Insertion Loss in Decibels | 0.30 SECONDUNABLE TO DECODE |
| Insertion Loss in Decibels | 0.40 THIRDUNABLE TO DECODE |
| Insertion Loss in Decibels | 0.50 FOURTHUNABLE TO DECODE |
| Insertion Loss in Decibels | 0.80 FIFTHUNABLE TO DECODE |
| Terminal Type and Quantity | 6 RECEPTACLE, COAXIAL |
| Coaxial Connector Series Designation | SMA |
| Throw Quantity | 4 |
| 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 |
|---|---|
| 81DD1BB78B32 PRIMARY | Dow-Key Microwave Llc (USA) |
| 545J-5308-ROHS | Dow-Key Microwave Llc (USA) |
NSN 5985-01-690-6943 is a Switch,radio Frequency Transmiss, manufactured by Dow-Key Microwave Llc, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-01-690-6943 has 2 manufacturer part numbers on file: 81DD1BB78B32 (Dow-Key Microwave Llc), 545J-5308-ROHS (Dow-Key Microwave Llc).
Key specifications for 81DD1BB78B32: Mounting Facility Type and Quantity: 6 CONNECTOR; Overall Height: 1.75 INCHES NOMINAL IN; Voltage Standing Wave Ratio: 1.20 FIRSTUNABLE TO DECODE; Voltage Standing Wave Ratio: 1.30 SECONDUNABLE TO DECODE. 23 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.