The ISA027027AB from 3Rwave is a RF & Microwave Isolator with Frequency 273 to 275 MHz, Average Power Forward 150 W, Average Power Reverse 100 W, Insertion Loss 0.2 to 0.25 dB, Isolation 17 to 22 dB. Tags: Drop-In, Drop-In Isolator. More details for ISA027027AB can be seen below.