Pilot in Command on Instagram: "Most ADF systems have a BFO switch mounted on the control panel. BFO stands for Beat Frequency Oscillator. With the BFO switch on, the ADF receiver generates
![Conceptual diagram of a beat frequency oscillator based audio generator. | Download Scientific Diagram Conceptual diagram of a beat frequency oscillator based audio generator. | Download Scientific Diagram](https://www.researchgate.net/publication/339092341/figure/fig6/AS:855934456848388@1581082085838/Conceptual-diagram-of-a-beat-frequency-oscillator-based-audio-generator.png)
Conceptual diagram of a beat frequency oscillator based audio generator. | Download Scientific Diagram
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