The RCPL-0.7-2.7-20d-Nf-100W-w18 from Raditek is a Directional Coupler with Frequency 0.7 to 2.7 GHz, Coupling 20 dB, Coupling Variation ±1 dB, Frequency Sensitivity ±0.13 to ±1 dB, Directivity 20 to 25 dB. Tags: Module with Connectors. More details for RCPL-0.7-2.7-20d-Nf-100W-w18 can be seen below.