Visualizing RF signal from inside the FPGA

In this video is presented an idea on how to visualize in frequency domain and real time a signal from inside of the FPGA on an external monitor, like built in crude spectrum analyzer which resides next to your main design. This is part of a bigger project (hobby) for building a digital radio on the FPGA, and will become a tool to test my new ADC-DAC 14 board which is in the making video link below