SKY65377-21 450MHz Front-End Module Skyworks Solutions Inc. SKY65377-21 450MHz Front-End Module (FEM) is a high-performance, Transmit/Receive (T/R) FEM that provides a complete T/R chain with T/R switches. The SKY65377-21 FEM has a shutdown mode and transmits chain features +30dBm output power and a 40% Power Added Efficiency (PAE). This SKY65377-21 device operates at 3.6V supply voltage, 675mA supply current, and 450MHz to 470MHz frequency range. The SKY65377-21 module is mounted in a 28-pin, 6mm x 6mm Multi-Chip Module (MCM) Surface-Mount Technology (SMT) package. Typical applications include automated meter reading, advanced metering infrastructure, ISM systems, and range extender.