The T1DV1 from Sonoma Scientific is a RF & Microwave Isolator with Frequency 1.494 to 1.496 GHz, Average Power 2.5 W, Average Power Forward 2.5 W, Insertion Loss 0.5 dB, Isolation 20 dB. Tags: Drop-In, Drop-In Isolator. More details for T1DV1 can be seen below.