The RCPL-880-1990M-30d-N(f)-100W-z4 from Raditek is a Directional Coupler with Frequency 880 to 1990 MHz, Coupling 30 dB, Coupling Variation ±2 dB, Directivity 15 dB, Average Power 100 W. Tags: Module with Connectors. More details for RCPL-880-1990M-30d-N(f)-100W-z4 can be seen below.