The JC00300200P50C40 from RFTR Electronics is a Directional Coupler with Frequency 30 to 200 MHz, Coupling 40 dB, Coupling Variation ±0.5 dB, Directivity 20 dB, Average Power 100 W. Tags: Module with Connectors. More details for JC00300200P50C40 can be seen below.