WR51 x WR75 Single Step Transition, built on a WR51 90 degree E-Plane Bend, with one port having a WR75 flange centered on a WR51 waveguide aperture

WR51 x WR75 Single Step Transition, built on a WR51 90 degree E-Plane Bend, with one port having a WR75 flange centered on a WR51 waveguide aperture