The Switch,radio Frequency Transmiss, cataloged under National Stock Number 5985-00-240-2899, 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 22 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 | 5985-00-240-2899 |
| Primary Part Number | 71-260402 |
| Item Name | Switch,radio Frequency Transmiss |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Dow-Key Microwave Llc |
| Status | ACTIVE |
| Switching Time | 25.0 MILLISECONDS MS |
| Mounting Facility Type and Quantity | 2 UNTHREADED HOLE(S) |
| Body Style | CYLINDRICAL |
| Overall Diameter | 5.750 INCHES NOMINAL IN |
| Actuator Voltage in Volts | 26.0 NOMINAL |
| Voltage Standing Wave Ratio | 1.18 SINGLE |
| Connector End Design | FEMALE |
| Coupling Position Quantity | 7 |
| Minimum Crosstalk Rating in Decibels | 58.0 SINGLE |
| Switch Type | TRANSFER |
| Insertion Loss in Decibels | 0.05 SINGLE |
| Actuator Operating Method | RELAY |
| Surface Treatment | ENAMEL BODY OUTSIDE SURFACES |
| Frequency Rating | 0.0 MEGAHERTZ MINIMUM AND 500.0 MEGAHERTZ MAXIMUM SINGLE FREQUENCY INSERTION LOSS REFERENCE |
| Frequency Rating | 0.0 MEGAHERTZ MINIMUM AND 500.0 MEGAHERTZ MAXIMUM SINGLE FREQUENCY CROSSTALK REFERENCE |
| Frequency Rating | 0.0 MEGAHERTZ MINIMUM AND 500.0 MEGAHERTZ MAXIMUM SINGLE FREQUENCY VOLTAGE STANDING WAVE RATIO |
| Frequency Rating | 0.0 MEGAHERTZ MINIMUM AND 500.0 MEGAHERTZ MAXIMUM SINGLE FREQUENCY OPERATING |
| Frequency Rating | 0.0 MEGAHERTZ MINIMUM AND 500.0 MEGAHERTZ MAXIMUM SINGLE FREQUENCY RF POWER HANDLING |
| Rf Power Handling Capability | 1.0 KILOWATTS PEAK SINGLE |
| Terminal Type and Quantity | 7 RECEPTACLE, COAXIAL |
| Switch Operation Sequence | MAKES BEFORE BREAKS |
| Coaxial Connector Series Designation | UHF |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
NSN 5985-00-240-2899 is a Switch,radio Frequency Transmiss, manufactured by Dow-Key Microwave Llc, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-00-240-2899 has 2 manufacturer part numbers on file: 71-260402 (Dow-Key Microwave Llc), 41F5957 (Dow-Key Microwave Llc).
Key specifications for 71-260402: Switching Time: 25.0 MILLISECONDS MS; Mounting Facility Type and Quantity: 2 UNTHREADED HOLE(S); Body Style: CYLINDRICAL; Overall Diameter: 5.750 INCHES NOMINAL IN. 22 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.