The T1GF1 from Sonoma Scientific is a RF & Microwave Isolator with Frequency 1.215 to 1.4 GHz, Average Power 60 W, Average Power Forward 60 W, Peak Power 300 W, Insertion Loss 0.4 dB. Tags: Drop-In, Drop-In Isolator. More details for T1GF1 can be seen below.