The QDDC-9000-10500-K1-50-NS from Qualwave is a Dual Directional Coupler with Coupling 50 dB, Coupling Variation ±0.5 dB, Frequency 9000 to 10500 MHz, Average Power 100 W, Insertion Loss 0.4 dB. Tags: Module with Connectors. More details for QDDC-9000-10500-K1-50-NS can be seen below.