The QDDC-20-200-1-20-N from Qualwave is a Dual Directional Coupler with Coupling 20 dB, Coupling Variation ±1 dB, Frequency 20 to 200 MHz, Average Power 1 W, Insertion Loss 0.3 dB. Tags: Module with Connectors. More details for QDDC-20-200-1-20-N can be seen below.