The C1FD1 from Sonoma Scientific is a RF & Microwave Isolator with Frequency 1.805 to 1.88 GHz, Average Power 1.3 W, Average Power Forward 1.3 W, Insertion Loss 0.3 dB, Isolation 23 dB. Tags: Drop-In, Drop-In Isolator. More details for C1FD1 can be seen below.