Build a Tiny (Unstable) Bugging Device — Hackaday

We don’t know who the [amgworkshop] wanted to listen in on, but they apparently went searching for a small FM wireless transmitter. There’s plenty of circuits around, but they wanted something smaller. The original circuit had a variable capacitor to tune the output frequency. The new design uses a fixed capacitor and a spring for…

via Build a Tiny (Unstable) Bugging Device — Hackaday

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