The JCM0858T0878S10R from JQL Electronics is a RF & Microwave Circulator with Frequency 858 to 878 MHz, Average Power Forward 100 W, Insertion Loss 0.35 dB, Isolation 21 dB, Operating Temperature -30 to 75 Degree C. Tags: Surface Mount Circulator. More details for JCM0858T0878S10R can be seen below.