This high-quality WR-28 waveguide adapter is designed for professional RF and microwave applications, providing a reliable transition from rectangular waveguide to coaxial interface. The unit operates across the full 26.4–40.1 GHz frequency range and ensures stable, low-VSWR performance.

The adapter is available in two versions:

• WR28 to 2.92mm female K connector (jack)

• WR28 to 2.92mm male K connector (plug)

With its UG-599/U flange and WR-28 waveguide size (7.11 × 3.55 mm), this precision RF component is widely used in microwave coaxial to waveguide transitions, laboratory test equipment, radar, satellite communication systems, 5G infrastructure, and millimeter-wave research setups.

Engineered for durability and accuracy, this WR-28 to K connector adapter is ideal for applications requiring RF millimeter-wave adapters, coaxial waveguide transitions, and precision RF connectors up to 40 GHz. Whether you need the female or male version, both options ensure consistent results for demanding environments.