Variable Attenuator

AR-1/11988A

AR-1/11988A
(NSN) National Stock Number
5985-00-009-2382
Federal Supply Classification
5985 Antennas, Waveguides and Related Equipment
Item Name Code
00838
Schedule B Code
8529109000
Summary

Transmission line application design, coaxial type body style, 2.060 inches maximum overall length, 0.880 inches nominal center to center distance between mounting facilities parallel to width, 2.310 inches nominal overall height, 2.600 inches maximum overall width

DAC HCC DMIL RNCC
5 - - 5
RNVC SADC MSDS RNAAC
2 - - TX
Identification

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).

INC FIIG Concept Condition
00838 A223A0 - 1
Specifications
Application Design
transmission line
Details The primary application for which the item is designed.
Body Style
coaxial type
Details The style designation indicating the configuration that most nearly corresponds to the appearance of the body.
Overall Length
2.060 inches maximum
Details The dimension measured along the longitudinal axis with terminated points at the extreme ends of the item.
Center To Center Distance Between Mounting Facilities Parallel To Width
0.880 inches nominal
Details The distance between the center of one mounting facility and the center of the adjacent mounting facility parallel to the width.
Overall Height
2.310 inches nominal
Details The distance measured in a straight line from the bottom to the top of an item.
Overall Width
2.600 inches maximum
Details An overall measurement taken at right angles to the length of an item,in distinction from thickness.
Shaft Length
0.560 inches maximum
Details A measurement of the longest dimension of the shaft,in distinction from width.
Center To Center Distance Between Mounting Facilities Parallel To Height
1.750 inches nominal
Details The distance between the center of one mounting facility and the center of the adjacent mounting facility parallel to the height.
Operating Temp Range
+0.0 to 75.0 deg celsius
Details The minimum and maximum limits of temperature at which the item is rated for operation.
Voltage Standing Wave Ratio
1.20
Details The ratio of the maximum to the minimum amplitude of pressure /voltage/ measured along the path of the waves.
Coaxial Connector Series Designation
bnc
Details A letter or group of letters used to designate the particular coaxial connector series.
Power Rating
500.0 milliwatts peak
Details The amount of electrical energy that can be dissipated.
Mounting Facility Screw Thread Series Designator
unc
Details A designation distinguishing one group of screw thread diameter-pitch combinations from another by the number of threads per measurement scale for a specific diameter on the mounting facility.
Insertion Loss At Minimum Attenuation In Maximum Decibels
1.0
Details The mathematical relationship of power available at the load before and after addition of the item to the circuit,set to its lowest value of attenuation,expressed in maximum decibels.
Overall Attenuation Range In Decibels
+0.0 to 6.0
Details The overall limits of decrease of the amplitude ratio of a signal between the input and output of the item,expressed in decibels.
Attenuation Variation Method
continuous
Details The means by which the attenuation can be varied from the minimum to the maximum setting.
Mounting Facility Type And Quantity
4 threaded hole
Details Indicates the type and number of facilities by which the item is mounted.
Frequency Range
25.000 megahertz minimum and 37.000 megahertz maximum
Details The minimum and maximum cyclic changes,per unit of time,for which an item is rated.
Overall Attenuation Accuracy In Decibels
-0.50 to 0.50
Details The overall limits of permissible variation in the attenuation accuracy from the nominal value at a specified frequency rating or range,expressed in decibels.
Mounting Thread Quantity
40 per inch
Details The number of mounting threads on the item measured on a line parallel to the thread axis,including incomplete threads.
Body Material
aluminum alloy
Details The chemical compound or mechanical mixture properties of which the body is fabricated.
Adjustment Device Type And Quantity
1 shaft
Details Indicates the type and number of facilities for adjusting the item.
Mounting Facility Pattern
four position rectangular
Details The general configuration and relative position of the facilities provided for mounting the item.
Shaft Type
round, slotted
Details Indicates the type of shaft included on the item.
Mounting Facility Nominal Screw Thread Diameter
0.112 inches
Details The nominal length of a straight line which passes through the center of a coaxial cylinder which would bound the crest of an external thread or the root of an internal thread.
Impedance Rating In Ohms
50.0 input-output
Details The total opposition (resistive and reactive) to the flow of alternating current,expressed in ohms.
Special Features
irridite case
Details Those unusual or unique characteristics or qualities of an item not covered in the other requirements and which are determined to be essential for identification on one or more other functions.
Fsc Application Data
antennas,waveguides,and related equipment
Details The justification for the assignment of a federal supply class /fsc/ to an item based on the classification of the next higher classifiable assembly.
Master-Cross Reference List
Part CAGE DAC HCC RNCC RNVC MSDS RNAAC
G300030S1 24930 6 - C 1 - ZZ
G300265S1 24930 A - 3 2 - TX
Material and Special Handling
Hazardous material, precious metals, criticality, and electrostatic discharge indicators.
HMIC PMIC ESD/EMI Criticality
P A - -
Freight
Universal / National Freight and Handling Information
UFC HMC LTL LCL
34580 - W -
RVC WCC TCC SHC
- 658 Z 9

What's Included?

  • Certificate of Conformity
  • QC Inspection prior to shipping
  • On time delivery
  • Friendly service to back every order
Manufacturer
MERRIMAC INDUSTRIES INC
CAGE: 12457
WEST CALDWELL , NJ , 07006-6206
UNITED STATES
View Products
FAQs
Frequently asked questions for NSN 5985-00-009-2382
What is the NIIN of the NSN 5985-00-009-2382?
The National Item Identification Number (NIIN) of the NSN 5985-00-009-2382 is 00-009-2382
When the NSN 5985-00-009-2382 was assigned to the Federal Catalog?
It was assigned 52 years ago, on Wed, Aug 2, 1972
Does the NSN 5985-00-009-2382 contain any precious metals?
Does not contain precious metal
Does the NSN 5985-00-009-2382 contain any hazardous material?
No information in HMIRS

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