The QSDC-20-1000-K5-50-N from Qualwave is a Directional Coupler with Frequency 20 to 1000 MHz, Coupling 50±2 dB, Directivity 16 dB, Average Power 500 W, Insertion Loss 0.3 dB. Tags: Module with Connectors. More details for QSDC-20-1000-K5-50-N can be seen below.