The QDDC-1-30-25K from Qualwave is a Dual Directional Coupler with Coupling 68 to 74 dB, Coupling Variation ±2 dB, Frequency 1 to 30 MHz, Average Power 25000 W, Insertion Loss 0.1 dB. Tags: Module with Connectors. More details for QDDC-1-30-25K can be seen below.