The MMCCC150A from Mesa Microwave is a RF & Microwave Circulator with Frequency 3.5 to 7 GHz, Bandwidth 300 to 600 MHz, Average Power Forward 60 W, Average Power Reverse 60 W, Insertion Loss 0.3 to 0.4 dB. Tags: Module with Connectors, Coaxial Circulator. More details for MMCCC150A can be seen below.