The QDDC-0.009-1000-K1 from Qualwave is a Dual Directional Coupler with Coupling 40 dB, Coupling Variation ±1.5 dB, Frequency 9 kHz to 1000 MHz, Average Power 100 W, Insertion Loss 0.6 dB. Tags: Module with Connectors. More details for QDDC-0.009-1000-K1 can be seen below.