The CC-943-054 from RF & Noise Components is a RF & Microwave Circulator with Frequency 925 to 960 MHz, Average Power Forward 250 W, Insertion Loss 0.2 to 0.25 dB, Isolation 23 to 26 dB, Return Loss 23 to 26 dB. Tags: Coaxial Circulator. More details for CC-943-054 can be seen below.