The QDDC-1.5-30-2K5-50-N from Qualwave is a Dual Directional Coupler with Coupling 50 dB, Coupling Variation ±0.75 dB, Frequency 1.5 to 30 MHz, Average Power 2500 W, Insertion Loss 0.05 dB. Tags: Module with Connectors. More details for QDDC-1.5-30-2K5-50-N can be seen below.