Check the listing for details. ​Cubic Communications ATC-100 Transceiver Digital DSP Board | 3003-2003 | AS-IS. Color: Green, Condition: For parts or not working. Listed at 75.00 USD. Recovered from a commercial communications cleanup. Up for sale is a replacement Digital Audio / DSP board (Assy 3003-2003-8) for the Cubic Communications ATC-100 VHF Airband Transceiver. This board is populated with classic late-90s silicon, including an Intel i386 EX embedded processor, a TI TMS320C31 DSP, a Xilinx Spartan FPGA, and Cirrus Logic audio DACs. Condition: This board is being sold strictly AS-IS / Untested for parts, repair, or commercial radio salvage. There are no obvious signs of burnt traces or catastrophic failure, but as we cannot test it, we do not accept returns. A highly specialized and hard-to-find replacement part for air traffic control radio restorers or commercial telecom technicians.