Low Power AM Transmitter with Bluetooth

This DIY AM transmitter lets you wirelessly broadcast music or audio from any Bluetooth-enabled device to vintage AM radios around your home or workshop. Designed for simplicity and performance, it features:

• Bluetooth audio input for modern wireless streaming
• Adjustable transmit frequency, typically around 1.3 MHz
• Adjustable modulation depth for clean, controlled sound
• Antenna tuning for maximum range and signal clarity
• 3-meter wire antenna, chosen to stay within legal low-power transmission limits

Despite its low power, this transmitter offers surprising reach when paired with proper antenna tuning and grounding. The build is battery-powered and isolated from the mains. Whether you’re reviving vintage radios or just want to play music over the AM band, this fun, hands-on project blends old-school tech with modern convenience.

Schematics, build details, and tuning tips included in the video description:

https://youtu.be/LluLqaj3_CY