The HD33133-B from HD Communications Corp is a RF & Microwave Isolator with Frequency 0.4 to 0.6 GHz, Bandwidth 20 MHz, Average Power Forward 200 W, Average Power Reverse 20 to 200 W, Insertion Loss 0.6 dB. Tags: Coaxial Isolator. More details for HD33133-B can be seen below.