The T19150404 from POLOMARCONI.IT is a RF & Microwave Circulator with Frequency 73 to 79 MHz, Average Power Forward 50 W, Insertion Loss 0.6 dB, Isolation 20 dB, Return Loss 19 dB. Tags: Module with Connectors, Coaxial Circulator. More details for T19150404 can be seen below.