The Switch,waveguide, cataloged under National Stock Number 5985-00-476-9965, 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 Laboratories, Inc. Dba Microwave Development Laboratories Inc. Government technical data includes 25 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-00-476-9965 |
| Primary Part Number | 20-5122P1 |
| Item Name | Switch,waveguide |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Microwave Development Laboratories, Inc. Dba Microwave Development Laboratories Inc |
| Status | ACTIVE |
| 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 | 115.0 NOMINAL |
| Voltage Standing Wave Ratio | 1.12 SINGLE |
| Longest Vertical Distance Between Mounting Centers | 1.240 INCHES MINIMUM AND 1.260 INCHES MAXIMUM SINGLE MOUNTING FACILITY PATTERN IN |
| Switch Return Mechanism Type | FAIL-SAFE |
| Features Provided | RESISTOR OFF CIRCUIT PROTECTION |
| Coupling Position Quantity | 5 |
| Nominal Thread Size | 0.138 INCHES MOUNTING FACILITY HOLE IN |
| Minimum Crosstalk Rating in Decibels | 60.0 SINGLE |
| Switch Type | TRANSFER |
| Insertion Loss in Decibels | 0.10 SINGLE |
| Actuator Operating Method | RELAY |
| Surface Treatment | CHROMATE BODY OUTSIDE SURFACES |
| Operating Temp Range | -54.0 TO 55.0 CELSIUS DEGC |
| Frequency Rating | 12.0 GIGAHERTZ MINIMUM AND 18.0 GIGAHERTZ MAXIMUM SINGLE FREQUENCY CROSSTALK REFERENCE |
| Frequency Rating | 12.0 GIGAHERTZ MINIMUM AND 18.0 GIGAHERTZ MAXIMUM SINGLE FREQUENCY INSERTION LOSS REFERENCE |
| Frequency Rating | 12.0 GIGAHERTZ MINIMUM AND 18.0 GIGAHERTZ MAXIMUM SINGLE FREQUENCY OPERATING |
| Frequency Rating | 12.0 GIGAHERTZ MINIMUM AND 18.0 GIGAHERTZ MAXIMUM SINGLE FREQUENCY VOLTAGE STANDING WAVE RATIO |
| Material | ALUMINUM BODY |
| Terminal Type and Quantity | 1 PLUG, COAXIAL AND 4 RECTANGULAR FLANGE |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) MOUNTING FACILITY HOLE |
| Longest Horizontal Distance Between Mounting Centers | 1.240 INCHES MINIMUM AND 1.260 INCHES MAXIMUM SINGLE MOUNTING FACILITY PATTERN IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL D — Destroy Item |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 20-5122P1 | Microwave Development Laboratories, Inc. Dba Microwave Development Laboratories Inc (USA) |
| Reference | Meaning |
|---|---|
| USCD-10200-1 | 5/9 Secondary reference The Boeing Company Div Legacy Corinth Bgrc |
| USCD-10200-1 | 3/9 Design control — primary reference Boeing Company, the |
NSN 5985-00-476-9965 is a Switch,waveguide, manufactured by Microwave Development Laboratories, Inc. Dba Microwave Development Laboratories Inc, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-00-476-9965 has 1 manufacturer part number on file: 20-5122P1 (Microwave Development Laboratories, Inc. Dba Microwave Development Laboratories Inc).
Key specifications for 20-5122P1: Switching Time: 100.0 MILLISECONDS MS; Mounting Facility Type and Quantity: 4 THREADED HOLE(S); Overall Height: 1.875 INCHES MAXIMUM IN; Body Style: RECTANGULAR. 25 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 5985-00-476-9965 has DEMIL Code D. 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.