The T1DG9 from Sonoma Scientific is a RF & Microwave Isolator with Frequency 1.84 to 1.87 GHz, Average Power 40 to 200 W, Average Power Forward 40 to 200 W, Insertion Loss 0.3 dB, Isolation 23 dB. Tags: Drop-In, Drop-In Isolator. More details for T1DG9 can be seen below.