The Calibrator,frequency, cataloged under National Stock Number 6625-01-151-2281, is classified within Federal Supply Class 6625 (Electrical and Electronic Properties Measuring and Testing Instruments) of the Instruments and Laboratory Equipment group. The manufacturer of record is Efratom Time & Frequency Products, Inc Dba Datum - Irvine Div Datum - Irvine. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6625-01-151-2281 |
| Primary Part Number | FRT-H |
| Item Name | Calibrator,frequency |
| FSC / FSG | 6625 / 66 — Electrical and Electronic Properties Measuring and Testing Instruments |
| Manufacturer | Efratom Time & Frequency Products, Inc Dba Datum - Irvine Div Datum - Irvine |
| Status | ACTIVE |
| Individual Channel Quantity | 4 |
| Unpackaged Unit Weight | 27.000 POUNDS NOMINAL LBS |
| AC Voltage Rating | 115.0 VOLTS NOMINAL AND 220.0 VOLTS NOMINAL |
| DC Voltage Rating | 23.0 VOLTS MINIMUM AND 32.0 VOLTS MAXIMUM |
| Mounting Method | CASE AND RACK |
| Individual Channel Frequency | 0.1 MEGAHERTZ NOMINAL AND 1.0 MEGAHERTZ NOMINAL AND 5.0 MEGAHERTZ NOMINAL AND 10.0 MEGAHERTZ NOMINAL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Weight | 10.0000 lbs |
| Cube | 1.0000 cu ft |
| Part Number | Manufacturer |
|---|---|
| FRT-H PRIMARY | Efratom Time & Frequency Products, Inc Dba Datum - Irvine Div Datum - Irvine (USA) |
| Reference | Meaning |
|---|---|
| U459-06 | 5/9 Secondary reference Etat Major De L'armee De Terre |
| U4590601 | 6/9 Informative reference only Etat Major De L'armee De Terre |
NSN 6625-01-151-2281 is a Calibrator,frequency, manufactured by Efratom Time & Frequency Products, Inc Dba Datum - Irvine Div Datum - Irvine, classified under FSC 6625, Electrical and Electronic Properties Measuring and Testing Instruments. Status: active.
NSN 6625-01-151-2281 has 1 manufacturer part number on file: FRT-H (Efratom Time & Frequency Products, Inc Dba Datum - Irvine Div Datum - Irvine).
Key specifications for FRT-H: Overall Height: 5.900 INCHES NOMINAL IN; Individual Channel Quantity: 4; Unpackaged Unit Weight: 27.000 POUNDS NOMINAL LBS; AC Voltage Rating: 115.0 VOLTS NOMINAL AND 220.0 VOLTS NOMINAL. 6 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.
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.