This project is my father’s idea, he found in an old army surplus store with a radar dish and mount. His idea was to make a very high gain microphone to be able to listen to almost anything, like birds or whatever else you want.
The electronic circuit is simple, just an electret’s microphone mounted in the focal point of the dish. An amplifier made of two op-amps, the first to give more gain and the second and most important is the AGC "Automatic Gain Control." With the AGC the audio signal you hear weather far or near, will be the same. In the schematic there is no power output for the audio, you can use a simple LM386 to drive a head phone. It is incredible what you can hear with this high gain dish mounted microphone! Have fun.
11 Comments to “Very High Gain Microphone”
All my source codes were taken from my personal projects.
Everything is for your information only. The C/C++ codes have been written
with ICCAVR. You can find the header and source CRT files by downloading their compiler.
All is for your information and everything is AS IS without any warranty of any kind. No other files are available and I don't make any modification for any body.
- All projects
- Electric Train
- General Posting
- Lastes News
- Work Bench Tools