The C1AS1 from Sonoma Scientific is a RF & Microwave Isolator with Frequency 1.01 to 1.05 GHz, Average Power 40 to 2000 W, Average Power Forward 40 to 2000 W, Insertion Loss 0.3 dB, Isolation 25 dB. Tags: Drop-In, Drop-In Isolator. More details for C1AS1 can be seen below.