Model: 2179

Variable Attenuator

Special Features:

Dial plate to e etched on black anodized aluminum; attenuator to be painted grey enamel; entire assembly except dial plate to be sprayed with clear lacquer

Properties:

Application Design
Transmission line
Body Material
Aluminum
Body Style
Coaxial type
Overall Length
Between 6.490 inches and 6.550 inches
Center To Center Distance Between Mounting Facilities Parallel To Length
5.860 inches
Center To Center Distance Between Mounting Facilities Parallel To Width
4.500 inches
Overall Height
Between 5.347 inches and 5.405 inches
Overall Width
4.950 inches
Scale Linearity
Nonlinear
Unthreaded Mounting Hole Diameter
0.196 inches
Operating Tempurature Range
-30.0/+71.0 degrees celsius
End Application
Radar set, an/fps-20
Voltage Standing Wave Ratio
1.60
Coaxial Connector Series Designation
Bnc
Power Rating
600.0 milliwatts average
Overall Attenuation Range In Decibels
+6.0/+23.0
Attenuation Variation Method
Stepped
Step Position Quantity
18
Attenuation Per Step In Decibels
1.0
Mounting Facility Type And Quantity
4 unthreaded hole
Frequency Range
Between 1.250 megahertz and 1.350 megahertz
Overall Attenuation Accuracy In Decibels
-1.00/+1.00
Adjustment Device Type And Quantity
1 knob and 1 shaft
Mounting Facility Pattern
Four position rectangular
Impedance Rating In Ohms
50.0 input-output
Terminal Type And Quantity
2 connector, coaxial, female
Fsc Application Data
Antennas, waveguides, and related equipment
NSN
5985-00-593-3211
Part Number
2179
Description
Attenuator,variable
CAGE
27834

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).

Part 2179 NSN 5985-00-593-3211

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
00838
FIIG:
A223A0
Concept No.:
App. Key:
A
Cond. Code:
1
Status:
A

Material Classification

Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicators
HMIC
PMIC
ESD/EMI
ENAC
MMAC
CRITL
HMIC:
P
PMIC:
A
ESD:
ESD:
MMAC:
CRITL:
X

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
1.5000lbs
Item Weight:
--
Item Dim:
--
OPI
SPI No.
SPI Rev.
SPC Mkg.
LVL A
LVL B
OPI:
SPI No.:
SPI Rev.:
SPC Mkg:
00
LVL_A:
E
LVL_B:
Q

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
061700
UFC:
34580
LTL:
100.0
LCL:
--
WCC:
658
TCC:
Z
SHC:
9
ACC:
Instruments/Radio

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Schedule B and Export
  • Schedule B: 8529109000
  • SITC: 76493
  • End Use: Telecommunications equipment
  • NAICS: 334220
  • USDA: 1

Freight Class: Antenna & antenna reflectors of all kinds; parts suitable for use soley or principally w/ apparatus of heading 8525 to 8528, nesoi

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