The QSDC-2300-2600-K5-40-NS from Qualwave is a Directional Coupler with Frequency 2300 to 2600 MHz, Coupling 40±0.5 dB, Directivity 20 dB, Average Power 500 W, Insertion Loss 0.4 dB. Tags: Module with Connectors. More details for QSDC-2300-2600-K5-40-NS can be seen below.