A tunable antenna preamp (Ameco TPA) is connected directly to the A to D converter: there is no analog front-end. The audio output is produced with delta-sigma DACs implemented in the FPGA. Control is by a computer via an RS232 link to the FPGA
LAPTOP software console controls Radio via RS232 link
We demonstrated this radio at the IEEE Field-Programmable Custom Computing Machines (FCCM) conference on April 9, 2003 and at The Military and Aerospace Programmable Logic Device (MAPLD) Conference, Sept 8-11 2003. This design was developed as a capabilities demonstration and as a design example for a book on DSP with FPGAs that has not been completed.