The Switch,radio Frequency Transmiss, cataloged under National Stock Number 5985-01-054-8174, 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 Ciao Wireless, Inc. Government technical data includes 26 specifications, cited from the U.S. Government catalog. The record lists 4 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-01-054-8174 |
| Primary Part Number | 401-240 |
| Item Name | Switch,radio Frequency Transmiss |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Ciao Wireless, Inc |
| Status | ACTIVE |
| Switching Time | 15.0 MILLISECONDS MS |
| Mounting Facility Type and Quantity | 2 UNTHREADED HOLE(S) |
| Body Style | RECTANGULAR |
| Mounting Facility Pattern | TWO POSITION IN-LINE SINGLE MOUNTING FACILITY PATTERN |
| Voltage Standing Wave Ratio | 1.40 THIRD |
| Voltage Standing Wave Ratio | 1.20 FIRST |
| Voltage Standing Wave Ratio | 1.50 FOURTH |
| Voltage Standing Wave Ratio | 1.25 SECOND |
| Unthreaded Mounting Hole Diameter | 0.083 INCHES MINIMUM AND 0.103 INCHES MAXIMUM IN |
| Switch Return Mechanism Type | FAIL-SAFE |
| Distance Between Mounting Facility Centers | 1.190 INCHES NOMINAL SINGLE MOUNTING FACILITY PATTERN IN |
| Coupling Position Quantity | 3 |
| Minimum Crosstalk Rating in Decibels | 60.0 SINGLE |
| Switch Type | NONTRANSFER |
| Insertion Loss in Decibels | 0.40 SECOND |
| Insertion Loss in Decibels | 0.50 THIRD |
| Insertion Loss in Decibels | 0.30 FIRST |
| Actuator Operating Method | RELAY |
| Operating Temp Range | -55.0 TO 100.0 CELSIUS DEGC |
| Frequency Rating | 0.0 GIGAHERTZ MINIMUM AND 18.0 GIGAHERTZ MAXIMUM SINGLE FREQUENCY INSERTION LOSS REFERENCE |
| Frequency Rating | 0.0 GIGAHERTZ MINIMUM AND 18.0 GIGAHERTZ MAXIMUM SINGLE FREQUENCY VOLTAGE STANDING WAVE RATIO |
| Frequency Rating | 0.0 GIGAHERTZ MINIMUM AND 18.0 GIGAHERTZ MAXIMUM SINGLE FREQUENCY OPERATING |
| Frequency Rating | 0.0 GIGAHERTZ MINIMUM AND 18.0 GIGAHERTZ MAXIMUM SINGLE FREQUENCY RF POWER HANDLING |
| Frequency Rating | 0.0 GIGAHERTZ MINIMUM AND 18.0 GIGAHERTZ MAXIMUM SINGLE FREQUENCY CROSSTALK REFERENCE |
| Rf Power Handling Capability | 15.0 WATTS AVERAGE SINGLE |
| Terminal Type and Quantity | 1 CONNECTOR, RECEPTACLE |
| 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 |
|---|---|
| 401-240 PRIMARY | Ciao Wireless, Inc (USA) |
| ZR30-4047-00 | A.m.r.a. Spa (ITA) |
| 885F052061 ITEM 73 | L3 Technologies, Inc. Div L3 Keo (USA) |
| 401-240 PRIMARY | Dow-Key Microwave Llc (USA) |
| Reference | Meaning |
|---|---|
| 885C052603 | 5/9 Secondary reference L3 Technologies, Inc. Div L3 Keo |
| 7530 4047 00 | 5/9 Secondary reference U.S. Government activity |
| 052603 | 7/2 Vendor item drawing reference L3 Technologies, Inc. Div L3 Keo |
| MA7530S047 | 3/9 Design control — primary reference U.S. Government activity |
NSN 5985-01-054-8174 is a Switch,radio Frequency Transmiss, manufactured by Ciao Wireless, Inc, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-01-054-8174 has 4 manufacturer part numbers on file: 401-240 (Ciao Wireless, Inc), ZR30-4047-00 (A.m.r.a. Spa), 885F052061 ITEM 73 (L3 Technologies, Inc. Div L3 Keo), 401-240 (Dow-Key Microwave Llc).
1 possible match (shared part number, not a government interchangeability claim): 5945-01-435-8271. Verify interchangeability with system specifications before substitution.
Key specifications for 401-240: Switching Time: 15.0 MILLISECONDS MS; Mounting Facility Type and Quantity: 2 UNTHREADED HOLE(S); Overall Height: 1.340 INCHES NOMINAL IN; Body Style: RECTANGULAR. 26 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 5985-01-054-8174 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.