The Decoder,intermediate Frequency, cataloged under National Stock Number 5840-01-027-3461, is classified within Federal Supply Class 5840 (Radar Equipment, Except Airborne) of the Communication, Detection, and Coherent Radiation Equipment group. The manufacturer of record is Northrop Grumman Support Services Corp. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5840-01-027-3461 |
| Primary Part Number | 138C557A01 |
| Item Name | Decoder,intermediate Frequency |
| FSC / FSG | 5840 / 58 — Radar Equipment, Except Airborne |
| Manufacturer | Northrop Grumman Support Services Corp |
| Status | ACTIVE |
| General Characteristics Item Description | 2.250 IN. LG,0.760 IN. W,0.525 IN. H IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL D — Destroy Item |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 138C557A01 PRIMARY | Northrop Grumman Support Services Corp (USA) |
| 138C557A01 | Omega Associates, Inc. Dba Omega Associates Inc (USA) |
| 138C557A | Centroid, Inc. Dba Centroid Inc (USA) |
| Reference | Meaning |
|---|---|
| 138C557A01 | 3/9 Design control — primary reference U.S. Government activity |
NSN 5840-01-027-3461 is a Decoder,intermediate Frequency, manufactured by Northrop Grumman Support Services Corp, classified under FSC 5840, Radar Equipment, Except Airborne. Status: active.
NSN 5840-01-027-3461 has 3 manufacturer part numbers on file: 138C557A01 (Northrop Grumman Support Services Corp), 138C557A01 (Omega Associates, Inc. Dba Omega Associates Inc), 138C557A (Centroid, Inc. Dba Centroid Inc).
Key specifications for 138C557A01: General Characteristics Item Description: 2.250 IN. LG,0.760 IN. W,0.525 IN. H IN; End Item Identification: RADAR SET JETDS TYPE AN/TPS43E. 1 specification is 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.
NSN 5840-01-027-3461 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.