The CX2F1 from Sonoma Scientific is a RF & Microwave Isolator with Frequency 257 to 277 MHz, Average Power 4500 to 14000 W, Average Power Forward 4500 to 14000 W, Insertion Loss 0.25 dB, Isolation 20 dB. Tags: Drop-In, Drop-In Isolator. More details for CX2F1 can be seen below.