SKY66422-11 860 to 930MHz RF Front-End Module Skyworks Solutions Inc. SKY66422-11 860 to 930MHz RF Front-End Module is designed for high-power Industrial, Scientific, Medical (ISM) band applications operating in the 860 to 930MHz frequency range. The SKY66422-11 is designed for ease of use and maximum flexibility with fully matched 50Ω TX and RX inputs and digital controls compatible with 1.6V to 3.6V CMOS levels.