The C1YF1 from Sonoma Scientific is a RF & Microwave Isolator with Frequency 1.62 to 1.66 GHz, Average Power 10 to 60 W, Average Power Forward 10 to 60 W, Insertion Loss 0.3 dB, Isolation 23 dB. Tags: Drop-In, Drop-In Isolator. More details for C1YF1 can be seen below.