The Amplifier-Oscillator Group, cataloged under National Stock Number 5840-00-556-9173, 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 L3harris Technologies, Inc Div Space & Airborne Systems. Government technical data includes 6 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5840-00-556-9173 |
| Primary Part Number | 78222 |
| Item Name | Amplifier-Oscillator Group |
| FSC / FSG | 5840 / 58 — Radar Equipment, Except Airborne |
| Manufacturer | L3harris Technologies, Inc Div Space & Airborne Systems |
| Status | ACTIVE |
| Accessory Identifying Number | AM-1627/GPN TYPE NO. AND AM-502 /GPN TYPE NO. AND AM-503A/GPN TYPE NO. AND 0-151/GPN TYPE NO. AND SA-241/GPN TYPE NO. A |
| Joint Electronics Type Designation System Item Type Number | TYPE NO. OA-253A/GPN A |
| Joint Electronics Type Designation System Item Name | AMPLIFIER-OSCILLATOR GROUP |
| Accessory Controlling Agency | JETDS |
| Furnished Items | AMPLIFIER,ELECTRONIC CONTROL,AMPLIFIER,INTERMEDIATE,FREQUENCY,AMPLIFIER INTERMEDIATE FREQ,OSCILLATOR,RADIO FREQ,SWITCH,ELECTRONIC |
| Accessory Component Quantity | 5 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL C — Remove/Demil Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 78222 PRIMARY | L3harris Technologies, Inc Div Space & Airborne Systems (USA) |
| Reference | Meaning |
|---|---|
| 0A253AGPN | 5/2 Secondary reference U.S. Government activity |
NSN 5840-00-556-9173 is a Amplifier-Oscillator Group, manufactured by L3harris Technologies, Inc Div Space & Airborne Systems, classified under FSC 5840, Radar Equipment, Except Airborne. Status: active.
NSN 5840-00-556-9173 has 1 manufacturer part number on file: 78222 (L3harris Technologies, Inc Div Space & Airborne Systems).
2 possible matches (shared part number, not a government interchangeability claim): 5305-00-680-5622, 4730-01-608-3193. Verify interchangeability with system specifications before substitution.
Key specifications for 78222: Accessory Identifying Number: AM-1627/GPN TYPE NO. AND AM-502 /GPN TYPE NO. AND AM-503A/GPN TYPE NO. AND 0-151/GPN TYPE NO. AND SA-241/GPN TYPE NO. A; Joint Electronics Type Designation System Item Type Number: TYPE NO. OA-253A/GPN A; Joint Electronics Type Designation System Item Name: AMPLIFIER-OSCILLATOR GROUP; Accessory Controlling Agency: JETDS. 6 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.
NSN 5840-00-556-9173 has DEMIL Code C. 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.