The QDDC-0.01-10-3K5-50-N7 from Qualwave is a Dual Directional Coupler with Coupling 50 dB, Coupling Variation ±0.5 dB, Frequency 0.01 to 10 MHz, Average Power 3500 W, Insertion Loss 0.2 dB. Tags: Module with Connectors. More details for QDDC-0.01-10-3K5-50-N7 can be seen below.