The JCD0858T 0878S10 from JQL Electronics is a RF & Microwave Circulator with Frequency 858 to 878 MHz, Average Power Forward 100 W, Insertion Loss 0.4 dB, Isolation 20 dB, Operating Temperature -30 to 70 Degree C. Tags: Drop-in Circulator. More details for JCD0858T 0878S10 can be seen below.