The C1GC1 from Sonoma Scientific is a RF & Microwave Isolator with Frequency 1.215 to 1.4 GHz, Average Power 288 to 1200 W, Average Power Forward 288 to 1200 W, Insertion Loss 0.25 dB, Isolation 23 dB. Tags: Drop-In, Drop-In Isolator. More details for C1GC1 can be seen below.