The QSDC-80-420-50 from Qualwave is a Directional Coupler with Frequency 80 to 420 MHz, Coupling 20±1 to 40±1 dB, Directivity 20 dB, Average Power 50 W, Insertion Loss 0.4 dB. Tags: Module with Connectors. More details for QSDC-80-420-50 can be seen below.