The RFDC-4.8DBA-DF from RF Industries is a Directional Coupler with Frequency 300 MHz to 2.7 GHz, Coupling 4.8 dB, Directivity 20 dB, Average Power 500 W, Peak Power 1.5 kW. Tags: Module with Connectors. More details for RFDC-4.8DBA-DF can be seen below.