The Switch,waveguide, cataloged under National Stock Number 5985-01-042-2005, 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 19 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-01-042-2005 |
| Primary Part Number | 112SR109 |
| 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 |
| Waveguide Flange Type | CHOKE |
| Switching Time | 125.0 MILLISECONDS MS |
| Body Style | RECTANGULAR |
| Actuator Voltage in Volts | 23.0 MINIMUM AND 33.0 MAXIMUM |
| Voltage Standing Wave Ratio | 1.08 SINGLE |
| Pole Quantity | 1 |
| Switch Return Mechanism Type | FAIL-SAFE |
| Coupling Position Quantity | 2 |
| Minimum Crosstalk Rating in Decibels | 80.0 SINGLE |
| Switch Type | NONTRANSFER |
| Insertion Loss in Decibels | 0.10 SINGLE |
| Actuator Operating Method | RELAY |
| Operating Temp Range | -54.0 TO 95.0 CELSIUS DEGC |
| Frequency Rating | 8.5 GIGAHERTZ MINIMUM AND 10.5 GIGAHERTZ MAXIMUM SINGLE FREQUENCY INSERTION LOSS REFERENCE |
| Frequency Rating | 8.5 GIGAHERTZ MINIMUM AND 10.5 GIGAHERTZ MAXIMUM SINGLE FREQUENCY OPERATING |
| Frequency Rating | 8.5 GIGAHERTZ MINIMUM AND 10.5 GIGAHERTZ MAXIMUM SINGLE FREQUENCY VOLTAGE STANDING WAVE RATIO |
| Flange Connecting Facility and Quantity | 4 THREADED HOLE(S) |
| Terminal Type and Quantity | 1 CONNECTOR, RECEPTACLE AND 2 RECTANGULAR FLANGE |
| Throw Quantity | 2 |
| 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 |
|---|---|
| 112SR109 PRIMARY | Microwave Development Laboratories, Inc. Dba Microwave Development Laboratories Inc (USA) |
| Reference | Meaning |
|---|---|
| 927062-1B | 7/2 Vendor item drawing reference U.S. Government activity |
NSN 5985-01-042-2005 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 5985-01-042-2005 has 1 manufacturer part number on file: 112SR109 (Microwave Development Laboratories, Inc. Dba Microwave Development Laboratories Inc).
Key specifications for 112SR109: Waveguide Flange Type: CHOKE; Switching Time: 125.0 MILLISECONDS MS; Overall Height: 2.120 INCHES NOMINAL IN; Body Style: RECTANGULAR. 19 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 5985-01-042-2005 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.