The T1YN1 from Sonoma Scientific is a RF & Microwave Isolator with Frequency 1.415 to 1.515 GHz, Insertion Loss 0.6 dB, Isolation 18 dB, Operating Temperature 0 to 50 Degree C. Tags: Module with Connectors, Coaxial Isolator. More details for T1YN1 can be seen below.