The RCPL-0.3-8.0-10dB-Sf-20W-3KW-Pk-w18 from Raditek is a Directional Coupler with Frequency 0.3 to 8.0 GHz, Coupling 10 dB, Coupling Variation ±1 dB, Frequency Sensitivity ±1.2 dB, Directivity 18 to 20 dB. Tags: Module with Connectors. More details for RCPL-0.3-8.0-10dB-Sf-20W-3KW-Pk-w18 can be seen below.