DOUBLE RIDGE WAVEGUIDE COMPONENTS .1 Waveguide Type WR28 to 2.92 mm Female 1.2 Flange Type FBP320 (Cover) 1.3 Connector 2.92mm Female 1.4 Material Copper 1.5 Finish Gold plating 2.0 Electrical Specifications 2.1 Frequency Range 26.5-40 GHz 2.2 VSWR (Max) 1.25 2.3 Insertion loss 0.3 dB