The TH901K / 6-12GHz from Sainty-Tech Communications Limited is a RF & Microwave Circulator with Frequency 6 to 12 GHz, Insertion Loss 0.6 dB, Isolation 16 dB, Operating Temperature -40 to 70 Degree C. Tags: Coaxial Circulator. More details for TH901K / 6-12GHz can be seen below.