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R281A Coaxial Waveguide Adapter, 2.4 mm (f), 26.5 to 40 GHz

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Starting From US$ 1,797

Typical Configuration  

Typical Configuration

R281A Coaxial to Waveguide Adapter, 2.4 mm female to WR-28, 26.5 to 40 GHz

  • 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: 1.13


  • Waveguide Designator: EIA WR-28 MIL-W-85/3-009
  • Flange Designator: UG-599/U MIL-F-3922


The Keysight R281A adapter transforms waveguide transmission line into 50-ohm coaxial line. Power can transmitted in either direction, and each adapter covers the full frequency range of its waveguide band with SWR less than 1.3.