A mixer combines the IF signal with the frequency the Arduino commands. The radio had a “clarifier” which acts as a fine tuning control. With the new setup, the Arduino has to read this ...

Receiving frequency-modulated radio waves is typically more difficult than their amplitude-modulated cousins because the circuitry necessary to demodulate an FM signal needs a frequency-to-voltage ...

Some can also combine television and FM radio signals. If you are experiencing pixellation or picture break up, it may be that your signal is too strong as this often presents itself similarly to ...