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Q281B Coaxial Waveguide Adapter, 2.4 mm (m), 33 to 50 GHz

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Starting From US$ 1,765

Typical Configuration  

Typical Configuration

Q281B Waveguide Adapter 2.4 mm male to WR-22

  • R-51B-001-C Return to Keysight Warranty - 1 year


Prices for: United States

* Prices are subject to change without notice. Prices shown are Manufacturer's Suggested Retail Prices (MSRP). Prices shown are exclusive of taxes.

Key Features & Specifications

Superior RF Performance

  • Maximum SWR: 1.17


  • Waveguide Designator: EIA WR-22 MIL-W-85/3-013
  • Flange Designator: UG-383/U MIL-F-3922/67B-013
  • Coaxial Connector: 2.4 mm male


The Keysight Q281B is a 2.4 mm male to WR-22 waveguide adapter that operates in the 33 to 50 GHz frequency range. These adapters transform waveguide transmission lines into 50 ohm coaxial lines. Power can transmitted in either direction, and each adapter covers the full frequency range of its waveguide band with SWR less than 1.3.