The T1YV1 from Sonoma Scientific is a RF & Microwave Isolator with Frequency 1.15 to 1.27 GHz, Average Power 0.1 W, Average Power Forward 0.1 W, Insertion Loss 0.7 dB, Isolation 20 dB. Tags: Drop-In, Drop-In Isolator. More details for T1YV1 can be seen below.