The ZDC8-50W21.7-33G-2322 from COM-MW is a Waveguide Coupler with Frequency 21.7 to 33 GHz, Coupling 48.5 to 51.5 dB, Directivity 18 dB, Insertion Loss 0.3 dB, Power 300 W. Tags: Crossguide Coupler. More details for ZDC8-50W21.7-33G-2322 can be seen below.