The Demultiplexer, cataloged under National Stock Number 5805-00-503-1307, is classified within Federal Supply Class 5805 (Telephone and Telegraph Equipment) of the Communication, Detection, and Coherent Radiation Equipment group. The manufacturer of record is Western Union Telegraph Co Sub of Western Union Corp. Government technical data includes 16 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5805-00-503-1307 |
| Primary Part Number | USG1487 |
| Item Name | Demultiplexer |
| FSC / FSG | 5805 / 58 — Telephone and Telegraph Equipment |
| Manufacturer | Western Union Telegraph Co Sub of Western Union Corp |
| Status | ACTIVE |
| Phase | SINGLE FIRST ALTERNATE OPERATING POWER RQMT |
| Phase | SINGLE SECOND ALTERNATE OPERATING POWER RQMT |
| AC Voltage Rating | 115.0 VOLTS MINIMUM FIRST ALTERNATE OPERATING POWER RQMT |
| AC Voltage Rating | 230.0 VOLTS MINIMUM SECOND ALTERNATE OPERATING POWER RQMT |
| Output Impedance Rating | 600.0 OHMS |
| Output Frequency Rating | 380.0 HERTZ MINIMUM AND 3020.0 HERTZ MAXIMUM |
| Multiplexing Method | FREQUENCY DIVISION |
| Output Frequency Bandwidth | 2.64 KILOHERTZ NOMINAL |
| Joint Electronics Type Designation System Item Type Number | GROUP OA-580/FGR-3 |
| Joint Electronics Type Designation System Item Name | AMPLIFIER-DEMULTIPLEXER |
| Input Frequency Bandwidth | 5.53 KILOHERTZ NOMINAL |
| Input Impedance Rating | 600.0 OHMS |
| Input Frequency Rating | 380.0 HERTZ MINIMUM AND 5910.0 HERTZ MAXIMUM |
| Frequency Rating | 60.0 HERTZ NOMINAL FIRST ALTERNATE OPERATING POWER RQMT |
| Frequency Rating | 50.0 HERTZ NOMINAL SECOND ALTERNATE OPERATING POWER RQMT |
| Channel Type and Quantity | 2 TRANSMITTING |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | N |
| Part Number | Manufacturer |
|---|---|
| USG1487 PRIMARY | Western Union Telegraph Co Sub of Western Union Corp (USA) |
| Reference | Meaning |
|---|---|
| TD98FGR3 | 3/2 Design control — primary reference U.S. Government activity |
| SCDL174590 | 5/2 Secondary reference U.S. Government activity |
NSN 5805-00-503-1307 is a Demultiplexer, manufactured by Western Union Telegraph Co Sub of Western Union Corp, classified under FSC 5805, Telephone and Telegraph Equipment. Status: active.
NSN 5805-00-503-1307 has 1 manufacturer part number on file: USG1487 (Western Union Telegraph Co Sub of Western Union Corp).
Key specifications for USG1487: Overall Height: 7.000 INCHES NOMINAL IN; Phase: SINGLE FIRST ALTERNATE OPERATING POWER RQMT; Phase: SINGLE SECOND ALTERNATE OPERATING POWER RQMT; AC Voltage Rating: 115.0 VOLTS MINIMUM FIRST ALTERNATE OPERATING POWER RQMT. 16 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). 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.