The QSDC-1000-12400-30-20-S from Qualwave is a Directional Coupler with Frequency 1000 to 12400 MHz, Coupling 20±1 dB, Directivity 15 dB, Average Power 30 W, Insertion Loss 0.87 dB. Tags: Module with Connectors. More details for QSDC-1000-12400-30-20-S can be seen below.