PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

AN/USM-48Generator,signal

Joint Electronics Type Designation System · NSN 6625-00-555-2264 · FSC 6625 · No Item Name Available
Verified by PartsTable
NSN 6625-00-555-2264 — this item is cataloged by the U.S. Government under National Stock Number 6625-00-555-2264. Primary manufacturer part number: AN/USM-48.
Features
  • Generator,signal — FSC 6625
  • Current Type: AC
  • Frequency Rating: 50.0 HERTZ MINIMUM AND 60.0 HERTZ MAXIMUM
  • Case Surface Treatment: ENAMEL
  • Material: ALUMINUM ALLOY CASE
  • Phase: SINGLE
  • Modulation Type: FM
  • Accessory Component Quantity: 7
Applications
  • Applications requiring Aluminum Alloy Case construction
General Description

The Generator,signal, cataloged under National Stock Number 6625-00-555-2264, is classified within Federal Supply Class 6625 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Joint Electronics Type Designation System. Government technical data includes 26 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6625-00-555-2264
Primary Part NumberAN/USM-48
Item NameGenerator,signal
FSC / FSG6625 / 66 — No Item Name Available
ManufacturerJoint Electronics Type Designation System
StatusACTIVE
Current TypeAC
Frequency Rating50.0 HERTZ MINIMUM AND 60.0 HERTZ MAXIMUM
Case Surface TreatmentENAMEL
MaterialALUMINUM ALLOY CASE
PhaseSINGLE
Modulation TypeFM
Accessory Component Quantity7
Accessory Identifying NumberSG-228/USM-48 TYPE NO. AND UG-1246/U TYPE NO. AND UG-1245/U TYPE NO. AND CY-2147/USM TYPE NO. AND CG-409/U TYPE NO. AND CG-1555/U TYPE NO. AND CX-3277/U TYPE NO.
Entry Date91-02-15
Accessory Controlling AgencyJETDS
Voltage Rating115.0 VOLTS NOMINAL
Modulation Degree0.5 USEC PULSE MINIMUM AND 10.0 USEC PULSE MAXIMUM AND 2500.0 USEC PULSE MAXIMUM
Output Impedance Rating500.0 OHMS NOMINAL
Accessory Component NameGENERATOR,SIGNAL; ADAPTER,WAVEGUIDE 2; CASE,SIGNAL GENERATOR; RADIO FREQUENCY CABLE ASSY; WAVEGUIDE ASSY; CABLE ASSY,POWER,ELECTRICAL
Calibration Accuracy RatingPORM 1 PCT
Modulated Frequency Rating0.04 KILOHERTZ MINIMUM AND 4.00 KILOHERTZ MAXIMUM
Frequency Band Quantity5
Frequency Range Rating+15.000 TO 21.000 GIGAHERTZ
Modulator LocationANY ACCEPTABLE
Functional ClassificationBB-1.1
Current TypeAC
Frequency Rating50.0 HERTZ MINIMUM AND 60.0 HERTZ MAXIMUM
Case Surface TreatmentENAMEL
MaterialALUMINUM ALLOY CASE
PhaseSINGLE
Modulation TypeFM
Lifecycle & Compliance
Acquisition StatusACTIVE
Successor6625-00-007-2866
HAZMATNo
Verified Substitutes 12
Ammeter
6625-00-034-50641268867 SUCCESSOR
Meter,special Scale
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
Ammeter
Ammeter
6625-00-089-8911SM-C-628713 SUCCESSOR
Meter,special Scale
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
Meter,multiple Scale
6625-00-231-88002836137 SUCCESSOR
Wattmeter
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
Ammeter
6625-00-332-6211SC-C-24420 SUCCESSOR
Multimeter
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
6625-00-476-1875476-0255-010 SUCCESSOR
Wattmeter
Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems
Cross-Reference Index
Part NumberManufacturer
AN/USM-48 PRIMARY Joint Electronics Type Designation System (USA)
628 Hewlett-Packard Company Dba HP (USA)
628 PRIMARY Keysight Technologies Inc (USA)
628 Keysight Technologies, Inc. (USA)
Related Parts
SUCCESSOR 6625-00-007-2866 Ammeter
6625-00-034-5064SUCCESSOR
METER,SPECIAL SCALE
1268867
6625-00-037-9480SUCCESSOR
AMMETER
6625-00-037-9481SUCCESSOR
AMMETER
6625-00-089-8911SUCCESSOR
METER,SPECIAL SCALE
SM-C-628713
6625-00-133-4662SUCCESSOR
METER,MULTIPLE SCALE
6625-00-231-8800SUCCESSOR
WATTMETER
2836137
6625-00-252-2275SUCCESSOR
AMMETER
6625-00-332-6211SUCCESSOR
MULTIMETER
SC-C-24420
6625-00-476-1875SUCCESSOR
WATTMETER
476-0255-010
6625-00-684-2821SUCCESSOR
AMMETER
6625-00-730-8550SUCCESSOR
LEAD,TEST
628

Frequently Asked Questions

What is NSN 6625-00-555-2264?

NSN 6625-00-555-2264 is a Generator,signal, manufactured by Joint Electronics Type Designation System, classified under FSC 6625 (No Item Name Available). Status: active.

What are the part numbers for NSN 6625-00-555-2264?

NSN 6625-00-555-2264 has 4 cross-referenced part numbers: AN/USM-48 (Joint Electronics Type Designation System), 628 (Hewlett-Packard Company Dba HP), 628 (Keysight Technologies Inc), 628 (Keysight Technologies, Inc.).

What NSN replaces 6625-00-555-2264?

There are 12 known substitutes for 6625-00-555-2264: 6625-00-007-2866, 6625-00-034-5064, 6625-00-037-9480 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of AN/USM-48?

Key specifications for AN/USM-48: Overall Height: 13.500 INCHES NOMINAL IN; Current Type: AC; Frequency Rating: 50.0 HERTZ MINIMUM AND 60.0 HERTZ MAXIMUM; Case Surface Treatment: ENAMEL. 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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