The MMCCC700A from Mesa Microwave is a RF & Microwave Circulator with Frequency 0.8 to 2 GHz, Bandwidth 1200 MHz, Average Power Forward 300 W, Average Power Reverse 300 W, Insertion Loss 1.3 dB. Tags: Module with Connectors, Coaxial Circulator. More details for MMCCC700A can be seen below.