PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MILR15281Generator,signal

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 6625-00-669-0256 · FSC 6625 · No Item Name Available
Verified by PartsTable
NSN 6625-00-669-0256 — this item is cataloged by the U.S. Government under National Stock Number 6625-00-669-0256. Primary manufacturer part number: MILR15281.
Features
  • Generator,signal — FSC 6625
  • Case Surface Treatment: ENAMEL
  • Material: ALUMINUM ALLOY CASE
  • Phase: SINGLE
  • Output Impedance Rating: 50.0 OHMS NOMINAL
  • Modulation Type: AM
  • Voltage Rating: 115.0 VOLTS NOMINAL
  • Modulated Frequency Rating: 0.4 KILOHERTZ NOMINAL AND 1.0 KILOHERTZ NOMINAL
Applications
  • Applications requiring Aluminum Alloy Case construction
General Description

The Generator,signal, cataloged under National Stock Number 6625-00-669-0256, is classified within Federal Supply Class 6625 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M. Government technical data includes 25 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN6625-00-669-0256
Primary Part NumberMILR15281
Item NameGenerator,signal
FSC / FSG6625 / 66 — No Item Name Available
ManufacturerMilitary Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
StatusACTIVE
Case Surface TreatmentENAMEL
MaterialALUMINUM ALLOY CASE
PhaseSINGLE
Output Impedance Rating50.0 OHMS NOMINAL
Modulation TypeAM
Voltage Rating115.0 VOLTS NOMINAL
Modulated Frequency Rating0.4 KILOHERTZ NOMINAL AND 1.0 KILOHERTZ NOMINAL
Frequency Range Rating+0.010 TO 50.000 MEGAHERTZ
Calibration Accuracy RatingPORM 0.5 PERCENT
Modulator LocationINTERNAL
Modulation Degree0.0 PERCENT MINIMUM AND 50.0 PERCENT MAXIMUM
Frequency Band Quantity8
Frequency Rating0.0 KILOHERTZ MINIMUM AND 1.6 KILOHERTZ MAXIMUM
Current TypeAC
Mounting TypeTABLE
Case Surface TreatmentENAMEL
MaterialALUMINUM ALLOY CASE
PhaseSINGLE
Output Impedance Rating50.0 OHMS NOMINAL
Modulation TypeAM
Voltage Rating115.0 VOLTS NOMINAL
Modulated Frequency Rating0.4 KILOHERTZ NOMINAL AND 1.0 KILOHERTZ NOMINAL
Frequency Range Rating+0.010 TO 50.000 MEGAHERTZ
Calibration Accuracy RatingPORM 0.5 PERCENT
Modulator LocationINTERNAL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Shelf Life Code0
Unit of IssueEA
SMR CodeJD
Weight34.9000 lbs
Cube0.9280 cu ft
Verified Substitutes 2
6625-00-580-7923ANURM25PAREN SUCCESSOR
Generator,signal
Joint Electronics Type Designation System
6625-00-649-5193ANURM25D SUCCESSOR
Generator,signal
Joint Electronics Type Designation System
Cross-Reference Index
Part NumberManufacturer
MILR15281 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
SG88URM25D Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
SG85URM25D Joint Electronics Type Designation System (USA)
107C446 Entron Industries Limited Partnership Dba Entron Industries Property Div (USA)
Related Parts
6625-00-580-7923SUCCESSOR
GENERATOR,SIGNAL
ANURM25PAREN
6625-00-649-5193SUCCESSOR
GENERATOR,SIGNAL
ANURM25D

Frequently Asked Questions

What is NSN 6625-00-669-0256?

NSN 6625-00-669-0256 is a Generator,signal, manufactured by Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 6625 (No Item Name Available). Status: active.

What are the part numbers for NSN 6625-00-669-0256?

NSN 6625-00-669-0256 has 4 cross-referenced part numbers: MILR15281 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), SG88URM25D (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), SG85URM25D (Joint Electronics Type Designation System), 107C446 (Entron Industries Limited Partnership Dba Entron Industries Property Div).

What NSN replaces 6625-00-669-0256?

There are 2 known substitutes for 6625-00-669-0256: 6625-00-580-7923, 6625-00-649-5193. Verify interchangeability with system specifications before substitution.

What are the specifications of MILR15281?

Key specifications for MILR15281: Case Surface Treatment: ENAMEL; Material: ALUMINUM ALLOY CASE; Phase: SINGLE; End Item Identification: TYPE NO. AN/URM-25D. 30 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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