The C1ZG1 from Sonoma Scientific is a RF & Microwave Isolator with Frequency 1.01 to 1.11 GHz, Average Power 120 W, Average Power Forward 120 W, Peak Power 2 kW, Insertion Loss 0.25 dB. Tags: Drop-In, Drop-In Isolator. More details for C1ZG1 can be seen below.