A new open source Portable HF SDR Transceiver is evolving from Mike Colton (KE7HIA), a self taught designer. Named the PSDR. It is full coverage (up to 30MHz) Transceiver, plus 144MHz. Using an ARM 168MHz processor, colour display, and an innovative interface.
For full details check out Mike's project here: http://hackaday.io/project/1538-PortableSDR