Part 1- Build Stereo Signal Tracer for testing Tube and Transistor (Radio, TV, and Guitar Amplifier)

🔧 How to build Signal Tracer – Compatible with Stereo, Mono & Bluetooth Speakers | RF & AF Signal Tracing Explained

In this video (Part 1), I introduce a versatile DIY Signal Tracer that works with any stereo or mono amplifier, including Bluetooth speakers. Whether you're troubleshooting radios, guitar amps, tube gear, or TVs, this project will help you trace RF and AF signals with ease.

⚡️ I used 2KV-rated 220pF capacitors in this build, since I had them on hand. For safer operation, especially when working with AC tube radios, I recommend using 600V or higher voltage-rated capacitors. For TVs and guitar amplifiers, even higher voltage caps are suggested to prevent damage and ensure reliable performance.

🔍 What is a Signal Tracer?
An RF/AF signal tracer is a simple yet powerful tool that allows technicians to follow the path of both radio frequency (RF) and audio frequency (AF) signals through a circuit. Using test leads and a built-in audio amplifier/speaker, it helps identify signal drop-offs and troubleshoot faulty stages in vintage radios or audio equipment.

🛠️ In this part, I also cover:

How the circuit works

Capacitor voltage recommendations

What adapters to use for connecting your signal tracer to different types of speakers or devices

🛠️ Whether you're restoring vintage electronics or just learning about signal flow in amplifiers, this video will give you practical insight and hands-on tips.

👉 Stay tuned for Part 2, where we’ll go deeper into signal detection and usage examples.

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Enjoy the build,
Regards, Jay

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