Aa5 Radio Signal Flow -

The "All American Five" (AA5) is the classic superheterodyne radio design produced from the 1930s through the 1960s. It is named for its use of exactly five vacuum tubes to handle all radio functions without a power transformer.

The signal travels through an Output Transformer (to match impedance) and into the Speaker . 5. Rectifier (The Power Supply) Tube: 35Z5 (or 35W4) AA5 Radio Signal Flow

It "strips" the radio carrier wave away, leaving only the Audio Signal (the music or voice). The "All American Five" (AA5) is the classic