Abstract : Aethercomm has shown that a high efficiency power amplifier can be developed to enhance efficiency over specific bands over frequencies ranging between 400MHz through 4000MHz with up to 67% efficiencies. These frequencies can be extended down to 30MHz and offer consistent performances by adding additional band functionality allowing support for both HMS, GMR and various commercial applications. The high efficiency power amplifier performance levels shall be maintained with high PAR modulated signals such as multi-carrier, LTE, WiMAX and WCDMA by incorporating Envelope Tracking (ET) functionality in the transmitter. Enhanced signal fidelity can be achieved with the high average output powers by implementing Digital Pre-Distortion (DPD), and Crest Factor Reduction (CFR). With the design implementation proposed, the end product will be a rugged and robust, highly integrated, high efficiency, versatile, state-of- the-art transmitter solution suitable for fixed and mobile military platforms requiring high efficiency RF performance extending between 30MHz through 4000MHz.