The MMCCC480A from Mesa Microwave is a RF & Microwave Circulator with Frequency 280 to 1300 MHz, Bandwidth 30 to 100 MHz, Average Power Forward 400 W, Average Power Reverse 400 W, Insertion Loss 0.3 to 0.4 dB. Tags: Module with Connectors, Coaxial Circulator. More details for MMCCC480A can be seen below.