The T1DX1 from Sonoma Scientific is a RF & Microwave Isolator with Frequency 1.435 to 1.535 GHz, Average Power 12 W, Average Power Forward 12 W, Insertion Loss 1.2 dB, Isolation 16 dB. Tags: Drop-In, Drop-In Isolator. More details for T1DX1 can be seen below.