The C1XB1 from Sonoma Scientific is a RF & Microwave Isolator with Frequency 1.215 to 1.4 GHz, Average Power 70 W, Average Power Forward 70 W, Insertion Loss 0.4 dB, Isolation 20 dB. Tags: Drop-In, Drop-In Isolator. More details for C1XB1 can be seen below.