18 – 26.5 GHz, Electronic Attenuator

515K/595, WR-42, K-Band, Attenuation Range 0 dB 60 dB, Insertion Loss 0.5 dB


Mi-Wave’s 515 Series Direct-reading electronic Precision Attenuators provide 0 to 60 dB of calibrated attenuation by rotation of a resistive vane mounted in a circular waveguide section. These units are often referred to as precision rotary vane attenuators.


• High Accuracy to 60dB

• Low VSWR

• Direct Reading

• Low Insertion Loss

• Anti-backlash Drive

• Negligible Phase Shift

• Rechargeable Internal Battery using USB C cable

• Battery Life 40 Hours


• Test & Measurement

• Manual Test Setups

• Mobile & Satellite Communications

• Radar Systems

*All data presented is collected from a sample lot.
* Actual data may vary unit to unit, slightly.
*All testing was performed under +25 °C case temperature.
*Consult factory to confirm if material, plating, size, shape, orientation and any electrical parameter is critical for the application as website information is for reference only.
*Millimeter Wave Products, Inc. reserves the right to change the information presented on website without notice as we continue to enhance the performance and design of our products.

High Accuracy Direct-Reading Precision Electronic Attenuator

Key features include:

-Accuracy and resolution has been dramatically improved for better performance.

-Attenuation from 0-60 dB: Up to to 60dB Attenuation (above for reference only) & a High Accuracy of 0.1 db or < 1% of the setting. A digital readout is provided on the front panel to display attenuation settings.

-USB Ready: Operates off a standard USB C cable that will charge the battery and operate the attenuator.

The 515 Series Direct-reading Precision attenuators are used in all RF measurement systems. They are most frequently used in RF substitution-type set-ups for precise measurement of characteristics such as isolation, coupling, insertion loss and gain


Lower frequency versions are available from 8.4 GHz and up.

Accuracy is based on calibration of test equipment.

Other Band/Waveguide Sizes available