The C1ZE1 from Sonoma Scientific is a RF & Microwave Isolator with Frequency 1.5 to 1.7 GHz, Average Power 25 W, Average Power Forward 25 W, Insertion Loss 0.5 dB, Isolation 20 dB. Tags: Drop-In, Drop-In Isolator. More details for C1ZE1 can be seen below.