The TY9N3 from Sonoma Scientific is a RF & Microwave Isolator with Frequency 957 MHz to 1.043 GHz, Average Power 1 W, Average Power Forward 1 W, Insertion Loss 0.4 dB, Isolation 18 dB. Tags: Drop-In, Drop-In Isolator. More details for TY9N3 can be seen below.