The T1FD1 from Sonoma Scientific is a RF & Microwave Isolator with Frequency 1.91 to 2.01 GHz, Average Power 0.6 W, Average Power Forward 0.6 W, Peak Power 6 W, Insertion Loss 0.5 dB. Tags: Drop-In, Drop-In Isolator. More details for T1FD1 can be seen below.