The ADRF-DCPL-6-4310 from Advanced RF Technologies is a Directional Coupler with Frequency 578 MHz to 2.7 GHz, Coupling 6 dB, Directivity 20 dB, Average Power 50 W, Peak Power 500 W. Tags: Module with Connectors. More details for ADRF-DCPL-6-4310 can be seen below.