The QSDC-300-26500-30 from Qualwave is a Directional Coupler with Frequency 300 to 26500 MHz, Coupling 6±0.9 to 10±0.9 dB, Directivity 11 dB, Average Power 30 W, Insertion Loss 2.7 to 3.5 dB. Tags: Module with Connectors. More details for QSDC-300-26500-30 can be seen below.