The QDDC-10-170-5K-60-S7 from Qualwave is a Dual Directional Coupler with Coupling 60 dB, Coupling Variation ±1.5 dB, Frequency 10 to 170 MHz, Average Power 5000 W, Insertion Loss 0.2 dB. Tags: Module with Connectors. More details for QDDC-10-170-5K-60-S7 can be seen below.