The C1CB4 from Sonoma Scientific is a RF & Microwave Isolator with Frequency 1.805 to 1.88 GHz, Average Power 10 to 15 W, Average Power Forward 10 to 15 W, Insertion Loss 0.5 dB, Isolation 50 dB. Tags: Drop-In, Drop-In Isolator. More details for C1CB4 can be seen below.