The 3SLE2NAR from Renaissance Electronics Corporation is a RF & Microwave Circulator with Frequency 300 to 310 MHz, Average Power Forward 10 W, Insertion Loss 0.8 to 1 dB, Isolation 15 to 17 dB, Operating Temperature 0 to 55 Degree C. Tags: Surface Mount Circulator. More details for 3SLE2NAR can be seen below.