FM Radio Transmitter 70-108 MHz – I2C
SKU 1606-HRS0500EAN 8219671120050Item type: AssembledOther radio modules
Description
This module is a compact board designed to transmit audio signals in the FM radio band between 70 MHz and 108 MHz. It is based on a high-performance integrated chip (such as the KT0803L) that enables digital stereo modulation and direct control via the I²C interface. Thanks to its compact size and ease of use, the module is ideal for educational, hobby and experimental applications, such as building personal mini radio stations or short-range wireless audio transmission systems.
The board includes a 3.5 mm jack input, which allows external audio sources such as smartphones, computers or MP3 players to be connected.
The modulated signal output is sent to a dedicated antenna pin, to which a simple conductive wire about 75 cm long can be connected to ensure good signal coverage.
Transmission frequency and various settings are controlled via the I²C interface, compatible with microcontrollers such as Arduino or Raspberry Pi, which allow the module’s operation to be programmed and customized. Power supply is simple and flexible, and can be provided with a voltage between 3 V and 5 V.
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Documentation and useful links
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Technical details
| Operating frequency | 70 – 108 MHz |
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| Modulation | Digital FM stereo |
| Control | I²C interface (compatible with Arduino, Raspberry Pi), 3V |
| Audio input | 3.5 mm jack (line-in) |
| Power supply | 3 V – 5 V DC |
| Compact dimensions | approx. 35 mm × 25 mm |
| Typical range | up to 30–50 meters |
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