The QDDC-12.56-14.56-4K-60-7S from Qualwave is a Dual Directional Coupler with Coupling 60 dB, Coupling Variation ±1 dB, Frequency 12.56 to 14.56 MHz, Average Power 4000 W, Insertion Loss 0.1 dB. Tags: Module with Connectors. More details for QDDC-12.56-14.56-4K-60-7S can be seen below.