The QSDC-100-520-K6-50-NS from Qualwave is a Directional Coupler with Frequency 100 to 520 MHz, Coupling 50±0.8 dB, Directivity 20 dB, Average Power 600 W, Insertion Loss 0.2 dB. Tags: Module with Connectors. More details for QSDC-100-520-K6-50-NS can be seen below.