The RFLC-203-1 from RF-Lambda is a RF & Microwave Circulator with Frequency 850 MHz to 1.7 GHz, Bandwidth Bandwidth: 50 MHz, Average Power Forward 50 W, Insertion Loss 0.3 dB, Isolation 23 dB. Tags: Drop-in Circulator. More details for RFLC-203-1 can be seen below.