How to build Stereo Signal Tracer for testing Tube and Transistor (Radio, TV, and Guitar Amplifier).

This Signal Tracer is compatible with any Stereo and Mono Amplifier Speakers including Bluetooth speaker.
I used 2KV for those 220pF capacitors, since I had some on hand. Use 600V if tracing signals in AC tube radio to be safe. I suggest for TV and guitar amp use very high capacitor voltages in this circuit.

An "RF AF signal tracer" is a piece of electronic test equipment used to detect and trace both radio frequency (RF) signals and audio frequency (AF) signals within a circuit, essentially allowing technicians to pinpoint where a signal is present or weak during troubleshooting by probing different points in the circuit and listening to the amplified signal through a speaker; "RF" indicates the ability to detect radio waves, while "AF" signifies the ability to detect audio signals.
A signal tracer lets you listen to both RF and IF signals as they pass through the radio under test. You can either buy one or build one. Signal tracers are simply audio amplifiers and speakers with test leads that let you locate and hear signals in the various radio stages.

I also discuss what Adapters to use for this Signal Tracer.

Enjoy the video!
Regards, Jay