The DC1750M2500B20C50PS-01 from Dyne Tech is a Directional Coupler with Frequency 500 MHz to 3 GHz, Coupling 20 dB, Coupling Variation ±1.5 dB, Directivity 18 dB, Average Power 50 W. Tags: Module with Connectors. More details for DC1750M2500B20C50PS-01 can be seen below.