The QSDBC-49800-75800 from Qualwave is a Waveguide Coupler with Frequency 49.8 to 75.8 GHz, Coupling 50 dB, Directivity 25 dB, Insertion Loss 0.2 dB, Power 10000 W. Tags: Broadwall Coupler, Directional Coupler. More details for QSDBC-49800-75800 can be seen below.