The ECC1700F1900A from ECHO Microwave is a RF & Microwave Circulator with Frequency 1.7 to 1.9 GHz, Average Power Forward 100 W, Insertion Loss 0.3 dB, Isolation 20 dB, Operating Temperature -30 to 80 Degree C. Tags: Coaxial Circulator. More details for ECC1700F1900A can be seen below.