The Switch,radio Frequency Transmiss, cataloged under National Stock Number 5985-00-499-6322, 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 26 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. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-00-499-6322 |
| Primary Part Number | 78-0604 |
| 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 | 1 THREADED BUSHING |
| Body Style | RECTANGULAR |
| Overall Diameter | 3.000 INCHES NOMINAL IN |
| Voltage Standing Wave Ratio | 1.30 SINGLE |
| Pole Quantity | 1 |
| Switch Return Mechanism Type | FAIL-SAFE |
| Connector End Design | FEMALE |
| Coupling Position Quantity | 7 |
| Nominal Thread Size | 0.4375 INCHES MOUNTING FACILITY BUSHING IN |
| Minimum Crosstalk Rating in Decibels | 60.0 SINGLE |
| Switch Type | NONTRANSFER |
| Insertion Loss in Decibels | 0.10 SINGLE |
| Actuator Operating Method | MANUAL |
| Surface Treatment | ANODIZE BODY OUTSIDE SURFACES |
| Frequency Rating | 0.0 GIGAHERTZ MINIMUM AND 1.0 GIGAHERTZ MAXIMUM SINGLE FREQUENCY CROSSTALK REFERENCE |
| Frequency Rating | 0.0 GIGAHERTZ MINIMUM AND 1.0 GIGAHERTZ MAXIMUM SINGLE FREQUENCY INSERTION LOSS REFERENCE |
| Frequency Rating | 0.0 GIGAHERTZ MINIMUM AND 1.0 GIGAHERTZ MAXIMUM SINGLE FREQUENCY OPERATING |
| Frequency Rating | 0.0 GIGAHERTZ MINIMUM AND 1.0 GIGAHERTZ MAXIMUM SINGLE FREQUENCY RF POWER HANDLING |
| Frequency Rating | 0.0 GIGAHERTZ MINIMUM AND 1.0 GIGAHERTZ MAXIMUM SINGLE FREQUENCY VOLTAGE STANDING WAVE RATIO |
| Rf Power Handling Capability | 1.5 KILOWATTS AVERAGE SINGLE |
| Material | ALUMINUM BODY |
| Terminal Type and Quantity | 7 RECEPTACLE, COAXIAL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) MOUNTING FACILITY BUSHING |
| Switch Operation Sequence | BREAKS BEFORE MAKES |
| Coaxial Connector Series Designation | UHF |
| Throw Quantity | 6 |
| 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 |
|---|---|
| 78-0604 PRIMARY | Dow-Key Microwave Llc (USA) |
NSN 5985-00-499-6322 is a Switch,radio Frequency Transmiss, manufactured by Dow-Key Microwave Llc, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-00-499-6322 has 1 manufacturer part number on file: 78-0604 (Dow-Key Microwave Llc).
1 possible match (shared part number, not a government interchangeability claim): 2990-01-297-2464. Verify interchangeability with system specifications before substitution.
Key specifications for 78-0604: Mounting Facility Type and Quantity: 1 THREADED BUSHING; Body Style: RECTANGULAR; Overall Diameter: 3.000 INCHES NOMINAL IN; Voltage Standing Wave Ratio: 1.30 SINGLE. 26 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.