The Switch,radio Frequency Transmiss, cataloged under National Stock Number 5985-01-370-4899, 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 Lockheed Martin Corporation Div Rms. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-01-370-4899 |
| Primary Part Number | 1212190-201 |
| Item Name | Switch,radio Frequency Transmiss |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Lockheed Martin Corporation Div Rms |
| Status | ACTIVE |
| Switching Time | 1.0 MICROSECONDS US |
| Mounting Facility Type and Quantity | 2 UNTHREADED HOLE(S) |
| Mounting Facility Pattern | TWO POSITION IN-LINE SINGLE MOUNTING FACILITY PATTERN |
| Precious Material | GOLD AND SILVER |
| Voltage Standing Wave Ratio | 1.45 SINGLE |
| Unthreaded Mounting Hole Diameter | 0.125 INCHES NOMINAL IN |
| Pole Quantity | 1 |
| Switch Return Mechanism Type | FAIL-SAFE |
| Connector End Design | MALE |
| Distance Between Mounting Facility Centers | 1.740 INCHES MINIMUM AND 1.760 INCHES MAXIMUM SINGLE MOUNTING FACILITY PATTERN IN |
| Coupling Position Quantity | 2 |
| Minimum Crosstalk Rating in Decibels | 40.0 SINGLE |
| Switch Type | NONTRANSFER |
| Insertion Loss in Decibels | 1.00 SINGLE |
| Actuator Operating Method | RELAY |
| Surface Treatment | GOLD CONTACT(S) ALL SURFACES |
| Surface Treatment | PASSIVATE CONNECTOR(S) ALL SURFACES |
| Surface Treatment | PAINT AND SILVER BODY OUTSIDE SURFACES |
| Precious Material and Location | CONTACT SURFACES GOLD AND OUTER CASE SILVER |
| Frequency Rating | 1.2 GIGAHERTZ MINIMUM AND 1.4 GIGAHERTZ MAXIMUM SINGLE FREQUENCY OPERATING |
| Material | STEEL CORROSION RESISTING CONNECTOR(S) |
| Terminal Type and Quantity | 2 PLUG, COAXIAL AND 3 TURRET |
| Coaxial Connector Series Designation | SMA |
| Throw Quantity | 1 |
| 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 |
|---|---|
| 1212190-201 PRIMARY | Lockheed Martin Corporation Div Rms (USA) |
| SW-H70S | Frontgrade Technologies Inc. (USA) |
| Reference | Meaning |
|---|---|
| 1212190-201 | 5/9 Secondary reference Lockheed Martin Corporation Div Rms - Mitchel Field |
| SW-H70S | 5/9 Secondary reference Caes Systems Llc |
NSN 5985-01-370-4899 is a Switch,radio Frequency Transmiss, manufactured by Lockheed Martin Corporation Div Rms, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-01-370-4899 has 2 manufacturer part numbers on file: 1212190-201 (Lockheed Martin Corporation Div Rms), SW-H70S (Frontgrade Technologies Inc.).
Key specifications for 1212190-201: Switching Time: 1.0 MICROSECONDS US; Mounting Facility Type and Quantity: 2 UNTHREADED HOLE(S); Overall Height: 0.500 INCHES MINIMUM IN; Mounting Facility Pattern: TWO POSITION IN-LINE SINGLE MOUNTING FACILITY PATTERN. 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.