The C1DK2 from Sonoma Scientific is a RF & Microwave Isolator with Frequency 1.02 to 1.04 GHz, Average Power 50 W, Average Power Forward 50 W, Peak Power 300 W, Insertion Loss 0.4 dB. Tags: Drop-In, Drop-In Isolator. More details for C1DK2 can be seen below.