The T1ZD2 from Sonoma Scientific is a RF & Microwave Isolator with Frequency 1.005 to 1.065 GHz, Average Power 5 W, Average Power Forward 5 W, Peak Power 500 W, Insertion Loss 0.45 dB. Tags: Drop-In, Drop-In Isolator. More details for T1ZD2 can be seen below.