NSN 5985-00-020-2990

Toggle Attenuator

About this product

Transmission line application design, n coaxial connector series designation, 1.0 watts average power rating, mounting facility screw thread series designator: unf.

Manufacturer part number CN-764/U for national stock number 5985000202990.


  • Product description

    Variable Attenuator NSN 5985-00-020-2990.

  • MPN or Model


  • Schedule B
    8529.10.9000 (Antenna & antenna reflectors of all kinds; parts suitable for use soley or principally w/ apparatus of heading 8525 to 8528, nesoi)
  • NMF (National Motor Freight)
    061700 - Elec Appliances/instruments NOI
  • Unit Weight (Est.)
    2 lb
  • Application Design
    Transmission line
  • Overall Length
    8.875 inches
  • Overall Diameter
    4.500 inches
  • Coaxial Connector Series Designation
  • Power Rating
    1.0 watts average
  • Mounting Facility Screw Thread Series Designator
  • Overall Attenuation Range In Decibels
  • Attenuation Variation Method
  • Step Position Quantity
  • Attenuation Per Step In Decibels
  • Mounting Facility Type And Quantity
    1 threaded bushing
  • Frequency Range
    Between 0.000 gigahertz and 400.000 gigahertz
  • Overall Attenuation Accuracy In Decibels
  • Mounting Thread Quantity
    32 per inch
  • Mounting Facility Screw Thread Diameter
    0.190 inches
  • Impedance Rating In Ohms
    50.0 input-output
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Variable Attenuator

A device for reducing the strength of an alternating current signal either continuously or in steps, without causing appreciable signal distortion, by maintaining substantially constant output and/or input impedance match. Continuously variable resistive devices must consist of at least two sections or one section with at least two rotating contacts. The item must have an overall attenuation rating. Includes tandem mounted variable resistors designed to function as an attenuator but whose terminals are not connected. See also resistor, vaiable (as modified).

Mechanic Bill explains Toggle Attenuator

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NSN 5985000202990

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
CN-764/U Joint Electronics Type Designation
A4349A R L C Electronics, Inc.
AT21-12F R L C Electronics, Inc.
VA112-6 Trak Microwave Corporation
50CV100-849 Alan Industries Inc
AT 104 F Singer Co The
AT-104-F Singer Co The Instrumentation Div
Stock Check
Availability for this item was last checked on 04/16/24. The quantities and conditions available at the time were:
  • NS: 1
  • SV: 1
  • NE: 1
  • AR: 1