The 533126 from Spinner is a waveguide to the coaxial adapter with an R740 (WG26 | WR12) waveguide interface and a 1.35 mm (Female) coaxial interface that operates from 60 to 90 GHz. This adapter has a return loss of 20 dB and is internally matched to an impedance of 50 ohms. The R 740 (WG26 | WR12) waveguide interface complies with IEC 60153-2 and the 1.35 mm (female) socket complies as per IEEE STD. 287. It contains a precision flange with an anti-cocking rim in the waveguide interface and complies with IEC 60154-2. The 533126 is roughly 28 mm in length and offers outstanding RF characteristics, passive inter-modulation, and VSWR.