It gives the tiny audio signal its first small boost. 4. Audio Power Output Stage Tube: 50L6 (or 50C5)
The weak signal is significantly boosted in strength while maintaining its "shape" (modulation). 3. Detector & First Audio Stage Tube: 12SQ7 (or 12AV6) Action: AA5 Radio Signal Flow
The signal travels through an Output Transformer (to match impedance) and into the Speaker . 5. Rectifier (The Power Supply) Tube: 35Z5 (or 35W4) It gives the tiny audio signal its first small boost
touch the metal chassis while the radio is plugged in. AA5 Radio Signal Flow
The Antenna picks up a high-frequency RF signal. The tube acts as both an Oscillator and a Mixer .