The ISA043045AA from 3Rwave is a RF & Microwave Isolator with Frequency 439 to 453 MHz, Average Power Forward 300 W, Average Power Reverse 100 W, Insertion Loss 0.25 to 0.3 dB, Isolation 21 to 25 dB. Tags: Drop-In Isolator. More details for ISA043045AA can be seen below.