The Switch,radio Frequency Transmiss, cataloged under National Stock Number 5985-01-370-4108, 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 Duotech Services Llc. Government technical data includes 24 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-01-370-4108 |
| Primary Part Number | 1220690-201 |
| Item Name | Switch,radio Frequency Transmiss |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Duotech Services Llc |
| Status | ACTIVE |
| Switching Time | 5.0 MICROSECONDS US |
| Mounting Facility Type and Quantity | 2 THREADED HOLE(S) |
| Body Style | RECTANGULAR |
| Mounting Facility Pattern | TWO POSITION DIAGONAL SINGLE MOUNTING FACILITY PATTERN |
| Pole Quantity | 1 |
| Switch Return Mechanism Type | FAIL-SAFE |
| Connector End Design | MALE |
| Distance Between Mounting Facility Centers | 1.000 INCHES NOMINAL SINGLE MOUNTING FACILITY PATTERN IN |
| Coupling Position Quantity | 3 |
| Nominal Thread Size | 0.086 INCHES MOUNTING FACILITY HOLE IN |
| Minimum Crosstalk Rating in Decibels | 30.0 SINGLE |
| Switch Type | NONTRANSFER |
| Insertion Loss in Decibels | 2.50 SINGLE |
| Actuator Operating Method | RELAY |
| Surface Treatment | NICKEL COVER ALL SURFACES |
| Surface Treatment | NICKEL BODY ALL SURFACES |
| Frequency Rating | 1200.0 MEGAHERTZ MINIMUM AND 1400.0 MEGAHERTZ MAXIMUM SINGLE FREQUENCY OPERATING |
| Thread Class | 2B MOUNTING FACILITY HOLE |
| Material | ALUMINUM COVER |
| Material | ALUMINUM BODY |
| Terminal Type and Quantity | 3 PLUG, COAXIAL AND 1 TURRET AND 2 PIN |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) MOUNTING FACILITY HOLE |
| Coaxial Connector Series Designation | SMA |
| Throw Quantity | 2 |
| 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 |
|---|---|
| 570900 | U. S. Dynamics Corporation (USA) |
| 1220690-201 PRIMARY | Duotech Services Llc (USA) |
| Reference | Meaning |
|---|---|
| 116465 | 5/9 Secondary reference U. S. Dynamics Corporation |
| 116465 | 5/9 Secondary reference Aeroflex R D L Corp |
| 1220690-201 | 5/9 Secondary reference Lockheed Martin Corporation Div Rms - Mitchel Field |
| 1220690-201 | 3/9 Design control — primary reference Lockheed Martin Corporation Div Rms |
NSN 5985-01-370-4108 is a Switch,radio Frequency Transmiss, manufactured by Duotech Services Llc, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-01-370-4108 has 2 manufacturer part numbers on file: 570900 (U. S. Dynamics Corporation), 1220690-201 (Duotech Services Llc).
Key specifications for 1220690-201: Switching Time: 5.0 MICROSECONDS US; Mounting Facility Type and Quantity: 2 THREADED HOLE(S); Overall Height: 1.780 INCHES MINIMUM AND 1.840 INCHES MAXIMUM IN; Body Style: RECTANGULAR. 24 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.