BlueStack1 makes it possible to use your dvmega-dual-bandradio with the BlueSpot app. Simply 'stack' the board between the radio and your UNO or MEGA. Firmware is available via dvmega.auria.nl. Download the needed firmware for the DVMegaboard HERE!
The power connector on this board will make sure there is low-loss powerconversion, and also is able to feed both the arduino and radio-board as well!