The QSDC-910-920-K3-30-S from Qualwave is a Directional Coupler with Frequency 910 to 920 MHz, Coupling 30±0.5 dB, Directivity 20 dB, Average Power 300 W, Insertion Loss 0.2 dB. Tags: Module with Connectors. More details for QSDC-910-920-K3-30-S can be seen below.