Three-stage FM bug transmitter using BC547 audio preamp, RF oscillator/modulator, and 2N3563 power amplifier for strong 100 MHz transmission. High-performance DIY wireless microphone circuit with improved range and signal stability.
Tag: FM Bug
A collection of DIY FM bug (miniature FM transmitter) projects for short-range wireless audio transmission on the FM band (≈88–108 MHz), including simple and multi-transistor circuits, schematics, tuning tips, and build guides for compact listening or wireless-microphone applications.
Tiny FM Transmitter with Just a Few Easy-to-Find Components
Learn how to build a compact Tiny FM transmitter using 2N3904, a few passive parts, and a simple air-core coil. Perfect for DIY electronics enthusiasts
DIY 3-Transistor FM Bug Transmitter Using Piezo Mic
Build a high-sensitivity DIY 3-Transistor FM Bug Transmitter using a piezo microphone. This step-by-step guide includes a stable schematic, BC547 transistor tips, and frequency tuning advice for crystal-clear long-range audio monitoring.
Mini FM Radio Transmitter
Have you ever wanted to broadcast your voice, even just a little bit? Well, now you can! This circuit diagram shows you how to build a simple FM Radio Transmitter . It’s a fun project, and it uses only a few basic parts.