The QDDBC-26300-40000 from Qualwave is a Waveguide Coupler with Frequency 26.3 to 40 GHz, Coupling 30 to 40 dB, Directivity 25 to 30 dB, Insertion Loss 0.2 dB, Power 36000 W. Tags: Dual Directional Coupler, Broadwall Coupler. More details for QDDBC-26300-40000 can be seen below.