The CC-898-053 from RF & Noise Components is a RF & Microwave Circulator with Frequency 890 to 915 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-898-053 can be seen below.