The QSDC-500-1000-30 from Qualwave is a Directional Coupler with Frequency 500 to 1000 MHz, Coupling 10, 20, 30 dB, Directivity 20 dB, Average Power 30 W, Insertion Loss 0.4 dB. Tags: Module with Connectors. More details for QSDC-500-1000-30 can be seen below.