The TH102M3-100 / 1930-1990MHz from Sainty-Tech Communications Limited is a RF & Microwave Circulator with Frequency 1930 to 1990 MHz, Insertion Loss 0.3 dB, Isolation 21 dB, Operating Temperature -40 to 85 Degree C. Tags: Drop-in Circulator. More details for TH102M3-100 / 1930-1990MHz can be seen below.