The QDDC-18000-67000-12-30-V from Qualwave is a Dual Directional Coupler with Coupling 30 dB, Coupling Variation ±1.2 dB, Frequency 18000 to 67000 MHz, Average Power 12 W, Insertion Loss 2.8 dB. Tags: Module with Connectors. More details for QDDC-18000-67000-12-30-V can be seen below.