I used a small FPGA when I needed to modulate a signal. Initially some people tried to use a microcontroller for the same purpose, but there was too much varia

I used a small FPGA when I needed to modulate a signal. Initially some people tried to use a microcontroller for the same purpose, but there was too much variance in the timing. In fact, initially even the built in silicon oscillator for the FPGA board was too inaccurate, needed to use a plug in crystal to improve the bit error rate. Used this board: https://digilent.com/reference/programmable-logic/basys-2/start https://digilent.com/reference/programmable-logic/basys-2/st...