PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

2305Meter,modulation

Viavi Solutionsllc · NSN 6625-01-154-4844 · FSC 6625 · No Item Name Available
Verified by PartsTable
NSN 6625-01-154-4844 — this item is cataloged by the U.S. Government under National Stock Number 6625-01-154-4844. Primary manufacturer part number: 2305.
Features
  • Meter,modulation — FSC 6625
  • Power Source: EXTERNAL
  • Frequency Rating: 50.0 HERTZ MINIMUM AND 400.0 HERTZ MAXIMUM
  • Measurement Range: +10.0 TO 1000.0 MILLIWATTS SINGLE INDICATOR SINGLE RANGE
  • Supplementary Features: SUPPGMANUFACTURERS NAME: MODULATION METER
  • Operating Voltage Rating in Volts: 105.0 AC MINIMUM AND 240.0 AC MAXIMUM
  • Functional Description: AUTOMATIC TUNING INSTRUMENT WITH A FREQUENCY RANGE OF 500 KHZ TO 2 GHZ; BASIC MODULATION ACCURACY +/-0.5%; FULL GPIB CAPABILITY; CAN BE USED TO CALIBRATE SIGNAL GENERATORS, CHARACTERIZATION OF SIGNAL SOURCES AND TEST TRANSMITTERS GHz
  • Display Digit Quantity: 8
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Meter,modulation, cataloged under National Stock Number 6625-01-154-4844, is classified within Federal Supply Class 6625 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Viavi Solutionsllc. Government technical data includes 21 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN6625-01-154-4844
Primary Part Number2305
Item NameMeter,modulation
FSC / FSG6625 / 66 — No Item Name Available
ManufacturerViavi Solutionsllc
StatusACTIVE
Power SourceEXTERNAL
Frequency Rating50.0 HERTZ MINIMUM AND 400.0 HERTZ MAXIMUM
Measurement Range+10.0 TO 1000.0 MILLIWATTS SINGLE INDICATOR SINGLE RANGE
Supplementary FeaturesSUPPGMANUFACTURERS NAME: MODULATION METER
Operating Voltage Rating in Volts105.0 AC MINIMUM AND 240.0 AC MAXIMUM
Functional DescriptionAUTOMATIC TUNING INSTRUMENT WITH A FREQUENCY RANGE OF 500 KHZ TO 2 GHZ; BASIC MODULATION ACCURACY +/-0.5%; FULL GPIB CAPABILITY; CAN BE USED TO CALIBRATE SIGNAL GENERATORS, CHARACTERIZATION OF SIGNAL SOURCES AND TEST TRANSMITTERS GHz
Display Digit Quantity8
Circuit Current for Which DesignedAC
Indicator TypeDIGITAL DISPLAY
Display TypeLIGHT EMITTING DIODE (L.E.D.).
Frequency Response Range+500.000 TO 2000000.000 KILOHERTZ
Power SourceEXTERNAL
Frequency Rating50.0 HERTZ MINIMUM AND 400.0 HERTZ MAXIMUM
Measurement Range+10.0 TO 1000.0 MILLIWATTS SINGLE INDICATOR SINGLE RANGE
Supplementary FeaturesSUPPGMANUFACTURERS NAME: MODULATION METER
Operating Voltage Rating in Volts105.0 AC MINIMUM AND 240.0 AC MAXIMUM
Functional DescriptionAUTOMATIC TUNING INSTRUMENT WITH A FREQUENCY RANGE OF 500 KHZ TO 2 GHZ; BASIC MODULATION ACCURACY +/-0.5%; FULL GPIB CAPABILITY; CAN BE USED TO CALIBRATE SIGNAL GENERATORS, CHARACTERIZATION OF SIGNAL SOURCES AND TEST TRANSMITTERS GHz
Display Digit Quantity8
Circuit Current for Which DesignedAC
Indicator TypeDIGITAL DISPLAY
Display TypeLIGHT EMITTING DIODE (L.E.D.).
Lifecycle & Compliance
Acquisition StatusACTIVE
Successor6625-00-038-8352
HAZMATNo
Shelf Life Code0
Criticality CodeS
Unit of IssueEA
SMR CodeVS
Weight48.0000 lbs
Cube6.5625 cu ft
Verified Substitutes 8
Converter,synchro-Signal
Circuit Card Assembly
Recorder,signal Data
5895-01-657-69322305 SUCCESSOR
Electronics Assembly,power,contr
Paneltronics Incorporated Dba Paneltronics Inc
6625-01-079-3394 INTERCHANGEABLE
Meter,modulation
6625-01-097-6010 INTERCHANGEABLE
Meter,modulation
6625-01-243-790482AD-01A-S10-S13 INTERCHANGEABLE
Meter,modulation
Boonton Electronics Corporation Div Boonton Electronics
6625-01-513-34058201 INTERCHANGEABLE
Meter,modulation
Boonton Electronics Corporation Div Boonton Electronics
Cross-Reference Index
Part NumberManufacturer
2305 Marconi Electronics Inc Marconi Instruments Div (USA)
2305 PRIMARY Viavi Solutionsllc (USA)
A-A-59418 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
Related Parts
SUCCESSOR 6625-00-038-8352 Converter,synchro-Signal
5998-01-022-7035SUCCESSOR
CIRCUIT CARD ASSEMBLY
5895-01-036-4430SUCCESSOR
RECORDER,SIGNAL DATA
5895-01-657-6932SUCCESSOR
ELECTRONICS ASSEMBLY,POWER,CONTR
2305
6625-01-079-3394INTERCHANGEABLE
METER,MODULATION
6625-01-097-6010INTERCHANGEABLE
METER,MODULATION
6625-01-243-7904INTERCHANGEABLE
METER,MODULATION
82AD-01A-S10-S13
6625-01-513-3405INTERCHANGEABLE
METER,MODULATION
8201

Frequently Asked Questions

What is NSN 6625-01-154-4844?

NSN 6625-01-154-4844 is a Meter,modulation, manufactured by Viavi Solutionsllc, classified under FSC 6625 (No Item Name Available). Status: active.

What are the part numbers for NSN 6625-01-154-4844?

NSN 6625-01-154-4844 has 3 cross-referenced part numbers: 2305 (Marconi Electronics Inc Marconi Instruments Div), 2305 (Viavi Solutionsllc), A-A-59418 (Federal Specifications Promulgated by General Services Administration Washington DC).

What NSN replaces 6625-01-154-4844?

There are 8 known substitutes for 6625-01-154-4844: 6625-00-038-8352, 5998-01-022-7035, 5895-01-036-4430 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 2305?

Key specifications for 2305: Power Source: EXTERNAL; Frequency Rating: 50.0 HERTZ MINIMUM AND 400.0 HERTZ MAXIMUM; Measurement Range: +10.0 TO 1000.0 MILLIWATTS SINGLE INDICATOR SINGLE RANGE; Supplementary Features: SUPPGMANUFACTURERS NAME: MODULATION METER. 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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