This document presents the design and implementation of a low cost reconfigurable radio transceiver platform. The platform will be used as a research tool in the investigation of software defined radio techniques. The hardware presented is an evolution of work presented at the 2006 RIA colloquium. The platform consists of four hardware elements, namely a radio transmitter, a radio receiver, a baseband interface and a PC to perform signal processing and configuration. Data and control communication is performed via a USB 2.0 interface between the transceiver and a laptop PC. The platform development included a substantial software element to configure the hardware and to receive and transmit data between the PC and the transceiver. The technical choices, design and realization of the prototype are discussed.