The C1BX4 from Sonoma Scientific is a RF & Microwave Isolator with Frequency 1.7 to 1.83 GHz, Average Power 70 W, Average Power Forward 70 W, Insertion Loss 0.35 dB, Isolation 18 dB. Tags: Drop-In, Drop-In Isolator. More details for C1BX4 can be seen below.