The ECI4900F5100AA from ECHO Microwave is a RF & Microwave Isolator with Frequency 4.9 to 5.1 GHz, Average Power Forward 2 W, Insertion Loss 0.3 dB, Isolation 21 dB, Operating Temperature -30 to 70 Degree C. Tags: Module with Connector, Coaxial Isolator. More details for ECI4900F5100AA can be seen below.