This Wireless FM Microphone Module 88-108MHz DIY Kit is a compact, low-power DIY FM transmitter module designed for wireless audio applications within the 88–108 MHz FM radio band. This module is ideal for hobbyists, educators, and electronics enthusiasts interested in building custom wireless microphone systems or exploring FM transmission technologies.

Features :

• Adjustable Frequency: Fine-tune the transmission frequency by adjusting the inductance coil to avoid interference with local FM stations.
• Integrated Microphone: Includes an onboard electret microphone for direct audio capture.
• Low Power Consumption: Efficient design suitable for battery-powered applications.
• DIY Assembly: Supplied as a kit with through-hole components, making it an excellent project for learning soldering and basic electronics.
• Versatile Applications: Can be used for wireless audio transmission, educational demonstrations, or as a foundation for more complex RF projects

Specifications :

• Operating Voltage: DC 3–6 V
• Operating Current: 5–15 mA
• Transmission Frequency: 88–108 MHz
• Transmission Distance: 5–50 meters (depending on environment and antenna)
• Audio Input: -15 dB (maximum)
• PCB Dimensions: 53 × 40 mm
• Audio Input Connector: 3.5 mm female jack

Package Contents :

• 1 × PCB
• All necessary electronic components (resistors, capacitors, transistors, inductors, etc.)
• Electret microphone
• 3.5 mm audio input jack
• Antenna wire
• Battery holder (if included)
• Assembly instructions and schematic diagram

Instructions and Schematic (PDF)