A small parabolic microphone sold as the Hausbell Listening Device
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I bought a small parabolic microphone for just 40 dollars off the web, and it really works…sort of

If you’ve looked for long-range listening devices on Amazon or eBay, you’ve no doubt come across a cool-looking small parabolic microphone for just 40 dollars. Often marketed under the Hausbell, Podoy, YaeTek, or other brand…