Mini FM microphone module with PLL and programmable 76-108 MHz frequency

Information about this module is generated with the help of AI. The description may be incomplete, inaccurate, or subject to change.
The Mini FM Wireless Microphone Module is a compact FM transmitter with a built-in electret microphone and programmable transmit frequency. It operates across the 76.0 MHz to 108.0 MHz FM band and uses PLL technology for stable frequency output and high audio quality.

A low-noise audio amplifier provides clear sound with low power consumption. The selected transmit frequency is automatically stored during power loss and restored the next time the module is powered. PLL technology minimizes frequency drift caused by temperature and supply voltage changes.

The module is controlled through a serial interface and can be programmed from a computer to set the desired transmit frequency. It is suitable for development, education, laboratory use, experiments, and custom audio projects.

For best range, a 75 cm antenna is recommended. In open areas the transmission distance can reach approximately 100 meters, depending on the antenna, receiver, and surrounding environment.

Facts.
Product type: FM transmitter module with built-in microphone
Microphone: Built-in electret microphone
Modulation: Standard FM
Audio channel: Mono
Frequency range: 76.0 MHz to 108.0 MHz
Frequency setting: Programmable through computer and serial interface
Frequency stabilization: PLL
Output power: 100 mW
Audio frequency response: 50 Hz to 18 kHz
Supply voltage: 3.0 V to 5.0 V DC
Operating current: Approximately 35 mA
Memory function: Stores last frequency after power loss
Frequency drift: Very low with temperature and voltage changes
Antenna: Recommended 75 cm wire antenna
Transmission distance: Up to approximately 100 meters in open areas
Interface: UART, TX and RX
Connections: VCC, GND, TX, RX, 3.3V, ANT
Applications: Development, education, laboratory use, and experimentation

Included.
1 pc module.

About the product.
Weight: approx 5 gram.
Contact us if you have questions at info@pchbutik.se
Article no: 3613
Remaining stock quantity can be found under the Product details tab.
In our range since: 2026-08-03AI generated text.

In Sweden, the use of FM transmitters is subject to radio transmission regulations. This module is intended for development, education, laboratory use, and experimental purposes. Operation within the FM broadcast band may require authorization from the Swedish Post and Telecom Authority (PTS), depending on how and where the module is used. The user is responsible for ensuring compliance with all applicable laws and regulations before operating this module.

For you.
Components and building materials for those who build electronics themselves experiment and develop.