How to make a tiny spy transmitter

TomTechTod has plans for making a very tiny radio transmitter which could be used to eavesdrop on a conversation at a distance. At the end of the video, he demonstrates how it works at a distance of 120 meters. Not to get all Gene Hackman, but it's a good reminder to be careful about what you say.

Image: Instructables/TomTechTod

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