The QDDC-2000-26500-30 from Qualwave is a Dual Directional Coupler with Coupling 10 to 30 dB, Coupling Variation ±0.8 dB, Frequency 2000 to 26500 MHz, Average Power 30 W, Insertion Loss 1.1 to 2.8 dB. Tags: Module with Connectors. More details for QDDC-2000-26500-30 can be seen below.