The RCPL-1700-2500M-25d-N(f)-20W-z4 from Raditek is a Directional Coupler with Frequency 1700 to 2500 MHz, Coupling 25 dB, Coupling Variation ±1 dB, Directivity 20 dB, Average Power 20 W. Tags: Module with Connectors. More details for RCPL-1700-2500M-25d-N(f)-20W-z4 can be seen below.