A Texas telecommunications company asking for FCC permission to use amateur radio frequencies between 430 and 440 MHz has submitted a response to the US regulator, defending itself against concerns from ham radio operators over interference. The letter, written by AST SpaceMobile assures the agency that its satellites are designed to "mitigate interference." The company also said it would shut down its use of the band if interference was found. The company's filing, reported on the PC Magazine website, reads in part that the FCC has found that AST SpaceMobile’s prior demonstrations of no interference conform to ITU regulations and are "sufficient to authorize a limited, nonconforming use.”

The PC Magazine website noted that the FCC has received more than 2,500 comments in protest of the company's proposed use of the band.