The QSDC-1400-1900-K5-50-NS from Qualwave is a Directional Coupler with Frequency 1400 to 1900 MHz, Coupling 50±0.6 dB, Directivity 23 dB, Average Power 500 W, Insertion Loss 0.3 dB. Tags: Module with Connectors. More details for QSDC-1400-1900-K5-50-NS can be seen below.