The signal travels through an Output Transformer (to match impedance) and into the Speaker . 5. Rectifier (The Power Supply) Tube: 35Z5 (or 35W4)
It combines the incoming station frequency with a local signal to create a constant Intermediate Frequency (IF) , usually 455 kHz . 2. IF Amplifier Stage Tube: 12SK7 (or 12BA6) AA5 Radio Signal Flow
This stage focuses purely on the 455 kHz signal. It uses IF Transformers to filter out everything except the desired station. The signal travels through an Output Transformer (to
It gives the tiny audio signal its first small boost. 4. Audio Power Output Stage Tube: 50L6 (or 50C5) AA5 Radio Signal Flow
Understanding the is key to troubleshooting these vintage sets. 📻 AA5 Signal Flow Diagram