88.1 MHz to 91.9 MHz is already reserved for noncommercial operation[1]. "Corporate radio" can only operate from 92.1 MHz to 107.9 MHz. So the two pirate radio

88.1 MHz to 91.9 MHz is already reserved for noncommercial operation[1]. "Corporate radio" can only operate from 92.1 MHz to 107.9 MHz. So the two pirate radio stations transmitting at 88.5 MHz and 87.7 MHz would most likely be interfering with noncommercial stations, presumably the kind of radio you say you want to protect. --- [1] See https://www.fcc.gov/media/radio/how-to-apply https://www.fcc.gov/media/radio/how-to-apply