PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

491Analyzer,spectrum

Tektronix, Inc. · NSN 6625-00-494-2937 · FSC 6625 · No Item Name Available
Verified by PartsTable
NSN 6625-00-494-2937 — this item is cataloged by the U.S. Government under National Stock Number 6625-00-494-2937. Primary manufacturer part number: 491.
Features
  • Analyzer,spectrum — FSC 6625
  • Reference Data and Literature: T.O. 33A1-5-288-1
  • Unit Type: STANDARD
  • Furnished Items and Quantity: COAX CABLE 2; PROTECTIVE COVER 1; VIEWING HOOD 1; OPERATORS MANUAL 1; SERVICE MANUAL 1; ADAPTER 1; FUSE 1; CRT LIGHT FILTERS 3
  • Mounting Method: CASE MOUNTED PORTABLE
  • Cathode Ray Tube Displayed Information: REFERENCE LEVEL; FREQUENCY; VERTICAL DISPLAY; FREQUENCY SPAN; FREQUENCY RANGE; RESOLUTION BANDWIDTH; RF ATTENUATION
  • Reference Data and Literature: T.O. 33A1-5-288-1
  • Unit Type: STANDARD
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Analyzer,spectrum, cataloged under National Stock Number 6625-00-494-2937, is classified within Federal Supply Class 6625 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Tektronix, Inc.. Government technical data includes 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 6 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6625-00-494-2937
Primary Part Number491
Item NameAnalyzer,spectrum
FSC / FSG6625 / 66 — No Item Name Available
ManufacturerTektronix, Inc.
StatusACTIVE
Reference Data and LiteratureT.O. 33A1-5-288-1
Unit TypeSTANDARD
Furnished Items and QuantityCOAX CABLE 2; PROTECTIVE COVER 1; VIEWING HOOD 1; OPERATORS MANUAL 1; SERVICE MANUAL 1; ADAPTER 1; FUSE 1; CRT LIGHT FILTERS 3
Mounting MethodCASE MOUNTED PORTABLE
Cathode Ray Tube Displayed InformationREFERENCE LEVEL; FREQUENCY; VERTICAL DISPLAY; FREQUENCY SPAN; FREQUENCY RANGE; RESOLUTION BANDWIDTH; RF ATTENUATION
Reference Data and LiteratureT.O. 33A1-5-288-1
Unit TypeSTANDARD
Furnished Items and QuantityCOAX CABLE 2; PROTECTIVE COVER 1; VIEWING HOOD 1; OPERATORS MANUAL 1; SERVICE MANUAL 1; ADAPTER 1; FUSE 1; CRT LIGHT FILTERS 3
Mounting MethodCASE MOUNTED PORTABLE
Cathode Ray Tube Displayed InformationREFERENCE LEVEL; FREQUENCY; VERTICAL DISPLAY; FREQUENCY SPAN; FREQUENCY RANGE; RESOLUTION BANDWIDTH; RF ATTENUATION
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Weight37.5000 lbs
Cube2.4754 cu ft
Verified Substitutes 2
Disk,flexible
6145-01-253-3190491 INTERCHANGEABLE
Cable,special Purpose,electrical
Wl Gore & Associates Inc
Cross-Reference Index
Part NumberManufacturer
491 Alrad Instruments Limited (GBR)
A20790A Mbda Uk Ltd (GBR)
U525-02 Etat Major De L'armee De Terre (FRA)
491 PRIMARY Tektronix, Inc. (USA)
491 Kohler Mira Ltd (GBR)
ANUSM366V1 Joint Electronics Type Designation System (USA)
Related Parts
7045-01-283-4362SUCCESSOR
DISK,FLEXIBLE
6145-01-253-3190INTERCHANGEABLE
CABLE,SPECIAL PURPOSE,ELECTRICAL
491

Frequently Asked Questions

What is NSN 6625-00-494-2937?

NSN 6625-00-494-2937 is a Analyzer,spectrum, manufactured by Tektronix, Inc., classified under FSC 6625 (No Item Name Available). Status: active.

What are the part numbers for NSN 6625-00-494-2937?

NSN 6625-00-494-2937 has 6 cross-referenced part numbers: 491 (Alrad Instruments Limited), A20790A (Mbda Uk Ltd), U525-02 (Etat Major De L'armee De Terre), 491 (Tektronix, Inc.), 491 (Kohler Mira Ltd) and 1 more.

What NSN replaces 6625-00-494-2937?

There are 2 known substitutes for 6625-00-494-2937: 7045-01-283-4362, 6145-01-253-3190. Verify interchangeability with system specifications before substitution.

What are the specifications of 491?

Key specifications for 491: Overall Width: 12.870 INCHES NOMINAL IN; Overall Length: 19.650 INCHES NOMINAL IN; Overall Height: 6.900 INCHES NOMINAL IN; Reference Data and Literature: T.O. 33A1-5-288-1. 16 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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