Variable Attenuator

Model / MPN: 704B-99 | NSN: 5985-00-009-4475

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 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).

Product Details

NATO Stock Number

5985-00-009-4475

Sold in multiples of

DEMIL

DEMIL/MLI

Application Design

Transmission line

Body Style

Coaxial type

Overall Length

5.938 inches

Center To Center Distance Between Mounting Facilities Parallel To Length

4.062 inches

Center To Center Distance Between Mounting Facilities Parallel To Width

2.250 inches

Overall Height

2.719 inches

Overall Width

7.562 inches

Voltage Standing Wave Ratio

1.50

Coaxial Connector Series Designation

Power Rating

2.0 watts average and 2.0 kilowatts peak

Mounting Facility Screw Thread Series Designator

Unc

Overall Attenuation Range In Decibels

+0.0/+99.0

Attenuation Variation Method

Stepped

Step Position Quantity

Attenuation Per Step In Decibels

1.0

Mounting Facility Type And Quantity

4 threaded hole

Frequency Range

Between 0.000 gigahertz and 12.400 gigahertz

Segment Attenuation Range In Decibels

+1.00/+9.00 and +10.00 to 19.00 and +20.00 to 29.00 and +30.00/+39.00 and +40.00/+49.00 and +50.00 to 59.00 and +60.00 to 69.00 and +70.00/+79.00 and +80.00 to 89.00 and +90.00/+99.00

Segment Attenuation Accuracy In Decibels

-0.40 to 0.40 and -1.00/+1.00 and -1.20 to 1.20 and -1.40 to 1.40 and -1.50/+1.50 and -1.70/+1.70 and -1.80 to 1.80 and -2.00 to 2.00 and -2.00 to 2.00 and -2.00/+2.00

Mounting Thread Quantity

32 per inch

Adjustment Device Type And Quantity

2 knob

Mounting Facility Pattern

Four position rectangular

Mounting Facility Screw Thread Diameter

0.138 inches

Impedance Rating In Ohms

50.0 input-output

Terminal Type And Quantity

2 connector, coaxial, female

704B Series Parts

Pricing and Availability

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704B-99 Cross Reference

704-99