Low-Noise, High-Gain Microphone Amplifier

It appears to be possible to convert an old MMDS parabolic dish antenna into a parabolic microphone.  All you really need to do is cover the dish section and dipole reflector with heavy-stock cardboard, then mount a microphone element at the focal point.  Construct the following low noise microphone pre-amp and hook everything up.  The final device is sensitive enough to listen to singing birds, listen to birds through walls, and listen to birds typing their passwords and get their character lengths, etc...

Low-Noise Experiments / Notes


"Shotgun" Direction Microphone

Build a multitube shotgun-style directional microphones, like those used in some movies.  This project is fully documented in the "Shotgun" Directional Microphone section.



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