The QDC5050X from Qualwave is a RF & Microwave Circulator with Frequency 150 to 330 MHz, Bandwidth 70 MHz, Average Power Forward 100 to 400 W, Insertion Loss 0.2 to 0.7 dB, Isolation 18 to 23 dB. Tags: Drop-In, Drop-in Circulator. More details for QDC5050X can be seen below.