
This PCB is the core of an antique radio retrofit or powered speaker project. Your radio uses its original controls, for an ‘old school’ experience but plays high quality Bluetooth audio.

This short video shows the retrofit in operation.
This video shows how to do the retrofit.

The PCB connects to the existing control knobs and provides a user experience similar to the original radio. It also drives the dial lights – up to three Type 47 incandescent bulbs or three LEDs when the speaker is on. The connections are minimal, so the radio can easily be reverted back to its original condition. If you don’t have wire, switches, light bulbs, or potentiometers, you can bundle the PCB with our Potentiometer and Wiring Kit which provides the components you’ll need. Though our PCB is targeted at antique radios, other hobbyists such as woodworkers have used it to make powered speakers with an “old school” user experience. You can specify the Bluetooth advertising/pairing string for your radio when ordering the PCB.
Can I do the Retrofit?
You don’t need to be an electronics or radio expert to do the retrofit. If you can use hand tools, solder wires, and follow a wiring diagram, you can do it. The video above shows all the details. If you need help planning or doing the retrofit just send email and we’ll help you.
What We Provide

You can buy the PCB and power supply ($119.00)

…or buy the PCB, power supply, and Potentiometer and Wiring Kit. ($159.00)
Click the buttons below to get more information.
