I’ve not used an FM radio for years, but if you’d like to teach younger generations about older technology and show them how to solder components there’s an RDA5807 based kit that would allow you to build DIY FM Radio operating in the 87 MHz to 108 MHz range.
The JC-300 kit comes with a bare PCB, and all components required including a speaker, an antenna, and a holder for a 18650 battery. Some of the main components of the kit include:
- RDK Microelectronics RDA5807 single-chip broadcast FM radio tuner operating in the 87MHz -108MHz frequency range
- DA2822 Power Amplifier
- 66mm speaker
- 75 Ohm FM antenna
- 18650 battery holder
- Feet/brackets to hold the PCB vertically
The system also comes with four buttons to adjust the volume and switch FM stations, plus a power switch.
Nothing is pre-soldered on the bare PCB at all, so everything will have to be soldered and assembled manually. You’ll also need a small Phillips screwdriver, wire cutters, a soldering iron, small gauge solder (1.0mm max recommended), and possibly a magnifying glass. The full step-by-step instructions, as well as the BoM and schematics, can be found in the user manual.
It could make a fun project for kids, and it won’t break the bank as I first found it on IC Station for $13.25, but it’s also available on Aliexpress for $12.61.
Source: Build a DIY FM Radio with this $12 kit
