The RCPL-520-2000M-xdB-S(f)-50W-z4 from Raditek is a Directional Coupler with Frequency 520 to 2000 MHz, Coupling 6 to 10 dB, Coupling Variation ±1.2 dB, Directivity 17 to 20 dB, Average Power 50 W. Tags: Module with Connectors. More details for RCPL-520-2000M-xdB-S(f)-50W-z4 can be seen below.