Simple FM Wireless Microphone Transmitter DIY Kit (80-108 MHz)
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Prices updated: 13 Oct 2026
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About this product
A DIY electronic kit for building a simple FM wireless microphone transmitter. It uses an electret microphone, runs from 3V to 6V DC and transmits in the 80 to 108 MHz FM band, so a common FM radio can receive it. Adjusting inductor L tunes the frequency to avoid local stations. Range is about ten to several tens of meters.
Specifications
- Frequency range
- 80–108 MHz
- Working voltage
- DC 3V–6V
- Transmission distance
- About 10 to several tens of meters
- Microphone
- Electret
- Tuning
- Adjust inductor L
Frequently asked questions
How do I receive the signal?
Tune a standard FM radio to the transmitter frequency. Adjust inductor L so the transmitter sits in the 80 to 108 MHz band, then pick a clear frequency on the radio.
Why does the range vary?
According to the listing, range depends on the supply voltage, antenna length and matching, the surrounding environment, electromagnetic interference and the receiver's sensitivity.
