The HDL-25-60-1500 from MCLI is a Dual Directional Coupler with Coupling 60 dB, Frequency 20 to 500 MHz, Average Power 1500 W, Insertion Loss 0.15 dB, Directivity 20 dB. Tags: Module with Connectors. More details for HDL-25-60-1500 can be seen below.