The T4YX1 from Sonoma Scientific is a RF & Microwave Isolator with Frequency 4.85 to 5.35 GHz, Average Power 10 to 20 W, Average Power Forward 10 to 20 W, Insertion Loss 0.4 dB, Isolation 20 dB. Tags: Drop-In, Drop-In Isolator. More details for T4YX1 can be seen below.