The MMCCI45B from Mesa Microwave is a RF & Microwave Isolator with Frequency 280 MHz to 1.3 GHz, Bandwidth 30 MHz, 100 MHz, Average Power Forward 300 W, Average Power Reverse 150 W, Insertion Loss 0.3 to 0.7 dB. Tags: Coaxial Isolator. More details for MMCCI45B can be seen below.