The 2A9NBT-1 from Renaissance Electronics Corporation is a RF & Microwave Isolator with Frequency 21.2 to 23.6 GHz, Average Power Forward 50 W, Insertion Loss 0.7 dB, Isolation 20 dB. Tags: Module with Connector, Coaxial Isolator. More details for 2A9NBT-1 can be seen below.