The TH201-C2 / 1.35-2.7GHz from Sainty-Tech Communications Limited is a RF & Microwave Circulator with Frequency 1.35 to 2.7 GHz, Insertion Loss 0.6 dB, Isolation 17 dB, Operating Temperature 0 to 60 Degree C. Tags: Coaxial Circulator. More details for TH201-C2 / 1.35-2.7GHz can be seen below.