A Direct Down Conversion DSP radio using LGT8F328P LQFP48 Nano style board with SI5351, FRAM. Samples single input from RF mixer at 48KHz then downconverts to 16KHz IQ feeding through a Biquad to the demodulators. Has AGC control of ADC reference voltage. As mixer is single there is a choice from NE612 to diode balanced mixers. WIP.