The QDDC-0.1-1000-K1-40-N from Qualwave is a Dual Directional Coupler with Coupling 40 dB, Coupling Variation ±2 dB, Frequency 0.1 to 1000 MHz, Average Power 100 W, Insertion Loss 1 dB. Tags: Module with Connectors. More details for QDDC-0.1-1000-K1-40-N can be seen below.