The RCPL-800-4000M-30d-N(f)-75W-z4 from Raditek is a Directional Coupler with Frequency 800 to 4000 MHz, Coupling 30 dB, Coupling Variation ±2 dB, Directivity 15 dB, Average Power 75 W. Tags: Module with Connectors. More details for RCPL-800-4000M-30d-N(f)-75W-z4 can be seen below.