The JIC0249T0251N6R from JQL Electronics is a RF & Microwave Isolator with Frequency 249 to 251 MHz, Average Power Forward 150 W, Average Power Reverse 60 W, Insertion Loss 0.3 dB, Isolation 21 dB. Tags: Module with Connector, Coaxial Isolator. More details for JIC0249T0251N6R can be seen below.