The QSDC-600-40000-30-10-K from Qualwave is a Directional Coupler with Frequency 600 to 40000 MHz, Coupling 10±2.8 dB, Frequency Sensitivity ±2.5 dB, Directivity 8 dB, Average Power 50 W. Tags: Module with Connectors. More details for QSDC-600-40000-30-10-K can be seen below.