The TH1201K / 6-18GHz from Sainty-Tech Communications Limited is a RF & Microwave Circulator with Frequency 6 to 18 GHz, Insertion Loss 1.5 dB, Isolation 10 dB, Operating Temperature -40 to 70 Degree C. Tags: Coaxial Circulator. More details for TH1201K / 6-18GHz can be seen below.