How to Build a Raspberry Pi FM Transmitter, FM transmitter with Raspberry pi 4, fm transmitter circuit in RPi4, RPi4 FM transmitter, FM transmitter with RPi4 Throughout our lives, we've relied on Radio and tv stations to keep us engaged. While we're on the subject of contradictions, it's also fair to say that these Stations can become tedious at times due to the RJ rambling on about nothing or annoying advertisements, and this may have left you wondering ....