Model: 158-B

Variable Attenuator

Properties:

Application Design
Waveguide
Body Material
Copper
Body Style
Waveguide type
Overall Length
3.875 inches
Center To Center Distance Between Mounting Facilities Parallel To Length
1.000 inches
Center To Center Distance Between Mounting Facilities Parallel To Width
1.000 inches
Overall Height
1.312 inches
Overall Width
3.563 inches
Unthreaded Mounting Hole Diameter
0.144 inches
Voltage Standing Wave Ratio
1.15
Power Rating
1.0 watts average
Waveguide Flange Type
Choke
Waveguide Flange Designation
Ug-419/u
Overall Attenuation Range In Decibels
+0.0/+40.0
Attenuation Variation Method
Continuous
Mounting Facility Type And Quantity
4 unthreaded hole
Frequency Range
Between 12.400 hertz and 18.000 kilohertz
Adjustment Device Type And Quantity
1 knob
Mounting Facility Pattern
Four position rectangular
Terminal Type And Quantity
2 flange
NSN
5985-00-797-0199
Part Number
158-B
Description
Attenuator,variable
CAGE
9N770

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 158-B NSN 5985-00-797-0199

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:
U
ESD:
ESD:
MMAC:
CRITL:
X

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
1.0000lbs
Item Weight:
--
Item Dim:
--
OPI
SPI No.
SPI Rev.
SPC Mkg.
LVL A
LVL B
OPI:
O
SPI No.:
SPI Rev.:
SPC Mkg:
00
LVL_A:
Q
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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