Mini-Circuits’ WR28-KFR+ is a waveguide to coax adapter operating from 26.5 to 40 GHz. This product features a WR28 waveguide interface with a precision standard UG-599/U-Flange to 2.92 mm-F coaxial connector. The WR28-KFR+ is machined from aluminum alloy 6061-T6 and gold-plated to ensure repeatable RF performance. This adapter has applications in laboratories, Ka-Band communications and more.