The Tuning Unit,radio Frequency, cataloged under National Stock Number 5820-00-164-8143, is classified within Federal Supply Class 5820 (Radio and Television Communication Equipment, Except Airborne) of the Communication, Detection, and Coherent Radiation Equipment group. The manufacturer of record is Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple. Government technical data includes 5 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5820-00-164-8143 |
| Primary Part Number | 51C489 |
| Item Name | Tuning Unit,radio Frequency |
| FSC / FSG | 5820 / 58 — Radio and Television Communication Equipment, Except Airborne |
| Manufacturer | Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple |
| Status | ACTIVE |
| FSC Application Data | RADIO,EXCEPT NAVIGATION,NONAIRBORNE |
| Control Type | LOCAL |
| Frequency Per Channel | 12.0 MEGAHERTZ MINIMUM OPERATING CHANNEL |
| Frequency Per Channel | 18.0 MEGAHERTZ MAXIMUM OPERATING CHANNEL |
| Operating Control Method | MANUAL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 51C489 PRIMARY | Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple (USA) |
| 550CV8 PRIMARY | Bogen Communications Inc (USA) |
| Reference | Meaning |
|---|---|
| TU54 | 5/2 Secondary reference U.S. Government activity |
| SC-D23881 | 3/2 Design control — primary reference U.S. Government activity |
| SCD23881ANDSCC24036 | 5/2 Secondary reference U.S. Government activity |
NSN 5820-00-164-8143 is a Tuning Unit,radio Frequency, manufactured by Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple, classified under FSC 5820, Radio and Television Communication Equipment, Except Airborne. Status: active.
NSN 5820-00-164-8143 has 2 manufacturer part numbers on file: 51C489 (Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple), 550CV8 (Bogen Communications Inc).
Key specifications for 51C489: FSC Application Data: RADIO,EXCEPT NAVIGATION,NONAIRBORNE; Control Type: LOCAL; Frequency Per Channel: 12.0 MEGAHERTZ MINIMUM OPERATING CHANNEL; Frequency Per Channel: 18.0 MEGAHERTZ MAXIMUM OPERATING CHANNEL. 5 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 5820-00-164-8143 has DEMIL Code B. 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.