The QDDC-0.009-500-K2-40-NS from Qualwave is a Dual Directional Coupler with Coupling 40 dB, Coupling Variation ±1 dB, Frequency 9 kHz to 500 MHz, Average Power 200 W, Insertion Loss 0.5 dB. Tags: Module with Connectors. More details for QDDC-0.009-500-K2-40-NS can be seen below.