The CX1J1 from Sonoma Scientific is a RF & Microwave Isolator with Frequency 174 to 180 MHz, Average Power 1 kW, Average Power Forward 1 kW, Insertion Loss 0.5 dB, Isolation 20 dB. Tags: Module with Connectors, Coaxial Isolator. More details for CX1J1 can be seen below.