The QSDC-80-1000-3K5-50-A1N from Qualwave is a Directional Coupler with Frequency 80 to 1000 MHz, Coupling 50±1 dB, Directivity 15 dB, Average Power 3500 W, Insertion Loss 0.35 dB. Tags: Module with Connectors. More details for QSDC-80-1000-3K5-50-A1N can be seen below.