The CX1Z1 from Sonoma Scientific is a RF & Microwave Isolator with Frequency 135 to 175 MHz, Average Power 1 kW, Average Power Forward 1 kW, Insertion Loss 0.4 dB, Isolation 18 dB. Tags: Module with Connectors, Coaxial Isolator. More details for CX1Z1 can be seen below.