No warranty included! Only use with proper filtering when connected to any long PCB trace or antenna. Not compliant with any regulatory standards until proper filtering is added and approved by a test lab and regulatory agency. A proof of concept FSK modem and switching mixer implemented in a FPGA for use as a HAM upconverter. Designed to run on a ICE40 FPGA on a ICEStick eval board Needs Yosys and others to build. Originally designed with ICEStudio.