Models PA-28KF-RA is Ka-Band waveguide to coax adapters that cover the frequency range of 26.5 to 40 GHz and constructed in right angle configuration. These adapters offer excellent VSWRs at both coax & waveguide ends and thus extremely low insertion loss, allowing efficient transition between rectangular WR-28 waveguide and 2.92 mm coaxial connectors. The end launch versions are offered under the model numbers PA-28KF-EL .