The RCPL-0.7-6.0-20d-Nf-100W-w18 from Raditek is a Directional Coupler with Frequency 0.7 to 6 GHz, Coupling 20 dB, Coupling Variation ±1.5 dB, Frequency Sensitivity ±0.13 to 1.2 dB, Directivity 17 to 22 dB. Tags: Module with Connectors. More details for RCPL-0.7-6.0-20d-Nf-100W-w18 can be seen below.