Comment on Why you hear voices in your white noise machineparentComments−harkinian2yIt's wild how easily things can act as AM receivers. A pencil and rusty razor, or a tooth filling and saliva.−nomel2yWhen I was taking my electronics courses, it was fairly difficult to not build an AM receiver. Any time we were working with PLL or high gain amplifiers attached to a speaker, you'd eventually hear AM talk radio come out of someone's project.−harkinian2yYeah, it's just a bandpass filter (very easy to make by accident) and an amp.
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It's wild how easily things can act as AM receivers. A pencil and rusty razor, or a tooth filling and saliva.
When I was taking my electronics courses, it was fairly difficult to not build an AM receiver. Any time we were working with PLL or high gain amplifiers attached to a speaker, you'd eventually hear AM talk radio come out of someone's project.
Yeah, it's just a bandpass filter (very easy to make by accident) and an amp.