The RFDC-4.8DBA-43F from RF Industries is a Directional Coupler with Frequency 380 MHz to 2.7 GHz, Coupling 4.8 dB, Coupling Variation 1.2 dB, Directivity 25 dB, Average Power 400 W. Tags: Module with Connectors. More details for RFDC-4.8DBA-43F can be seen below.