The TG501H / 3-6GHz from Sainty-Tech Communications Limited is a RF & Microwave Isolator with Frequency 3 to 6 GHz, Average Power Reverse 10 W (Load), Insertion Loss 0.6 dB, Isolation 17 dB, Operating Temperature -30 to 70 Degree C. Tags: Coaxial Isolator. More details for TG501H / 3-6GHz can be seen below.