Just a Simple FM radio receiver, controlled by an ATmega328p AVR microcontroller. The tuner utilizes a Sanyo chipset. LC72131 and LA1837. The LC72131 is controlled by Sanyo's CCB (Computer Control Bus).
https://youtu.be/AijApAxOZ6w
Schematics, C code etc:
https://github.com/firew4lker/AVR_Radio