The Switch,waveguide, cataloged under National Stock Number 5985-00-189-3299, 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 K&l Microwave Llc. Government technical data includes 27 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-00-189-3299 |
| Primary Part Number | 33 D 21300 |
| Item Name | Switch,waveguide |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | K&l Microwave Llc |
| Status | ACTIVE |
| Waveguide Flange Type | CHOKE |
| Switching Time | 100.0 MILLISECONDS MS |
| Mounting Facility Type and Quantity | 4 THREADED HOLE(S) |
| Body Style | RECTANGULAR |
| Mounting Facility Pattern | FOUR POSITION RECTANGULAR SINGLE MOUNTING FACILITY PATTERN |
| Actuator Voltage in Volts | 28.0 NOMINAL |
| Voltage Standing Wave Ratio | 1.08 SINGLE |
| Longest Vertical Distance Between Mounting Centers | 0.812 INCHES NOMINAL SINGLE MOUNTING FACILITY PATTERN IN |
| Coupling Position Quantity | 4 |
| Nominal Thread Size | 0.164 INCHES FLANGE CONNECTION FACILITY HOLE IN |
| Nominal Thread Size | 0.164 INCHES MOUNTING FACILITY HOLE IN |
| Minimum Crosstalk Rating in Decibels | 50.0 SINGLE |
| Switch Type | TRANSFER |
| Insertion Loss in Decibels | 0.10 SINGLE |
| Actuator Operating Method | RELAY |
| Surface Treatment | ENAMEL BODY OUTSIDE SURFACES |
| Operating Temp Range | -55.0 TO 100.0 CELSIUS DEGC |
| Frequency Rating | 9.0 GIGAHERTZ MINIMUM AND 9.6 GIGAHERTZ MAXIMUM SINGLE FREQUENCY INSERTION LOSS REFERENCE |
| Frequency Rating | 9.0 GIGAHERTZ MINIMUM AND 9.6 GIGAHERTZ MAXIMUM SINGLE FREQUENCY OPERATING |
| Frequency Rating | 9.0 GIGAHERTZ MINIMUM AND 9.6 GIGAHERTZ MAXIMUM SINGLE FREQUENCY RF POWER HANDLING |
| Frequency Rating | 9.0 GIGAHERTZ MINIMUM AND 9.6 GIGAHERTZ MAXIMUM SINGLE FREQUENCY VOLTAGE STANDING WAVE RATIO |
| Rf Power Handling Capability | 125.0 KILOWATTS PEAK SINGLE |
| Material | METAL BODY |
| Flange Connecting Facility and Quantity | 4 THREADED HOLE(S) |
| Terminal Type and Quantity | 1 RECEPTACLE, COAXIAL AND 4 RECTANGULAR FLANGE |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) MOUNTING FACILITY HOLE |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) FLANGE CONNECTION FACILITY HOLE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 33 D 21300 | K&l Microwave Llc (USA) |
| 20-2344P2 | Microwave Development Laboratories, Inc. Dba Microwave Development Laboratories Inc (USA) |
| Reference | Meaning |
|---|---|
| 533818-2 | 3/2 Design control — primary reference U.S. Government activity |
| 33 D 21300 | 5/9 Secondary reference U.S. Government activity |
NSN 5985-00-189-3299 is a Switch,waveguide, manufactured by K&l Microwave Llc, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-00-189-3299 has 2 manufacturer part numbers on file: 33 D 21300 (K&l Microwave Llc), 20-2344P2 (Microwave Development Laboratories, Inc. Dba Microwave Development Laboratories Inc).
Key specifications for 33 D 21300: Waveguide Flange Type: CHOKE; Switching Time: 100.0 MILLISECONDS MS; Mounting Facility Type and Quantity: 4 THREADED HOLE(S); Overall Height: 1.870 INCHES NOMINAL IN. 27 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.
NSN 5985-00-189-3299 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.