http://hpsdr.org/index.htmlThis may get you there easier. Right now it is just a motherboard and three plug in boards. They can be mounted in a computer case. I just have mine bolted to a plate with three power supplies.
Penny is the reverse of a QSR1 where I/Q go through a digital up converter driving a 122 mHz DAC to make RF. HPSDR will make the RX mate soon so this will be a stand alone All mode XCVR 160 m to 6m.