The QSDC-500-8000-K25 from Qualwave is a Directional Coupler with Frequency 500 to 8000 MHz, Coupling 30±0.8 to 40±0.9 dB, Directivity 14 dB, Average Power 250 W, Insertion Loss 0.5 dB. Tags: Module with Connectors. More details for QSDC-500-8000-K25 can be seen below.