87-108MHz FM Stereo Digital Radio Circuit Board

The 87-108MHz FM Stereo Digital Radio Circuit Board is a compact and efficient module designed for high-quality FM radio reception. With features like PLL digital frequency lock, 30-level digital volume control, and full coverage from 76.0MHz to 108.0MHz, this circuit board offers a robust and reliable performance. It supports both manual and automatic search functions, and it also includes a power-off memory for volume and frequency settings. This module is ideal for DIY radio projects, providing stereo audio output and a simple interface for easy operation.

Specifications of 87-108MHz FM Stereo Digital Radio Circuit Board

• Output Power: 500mW (drives headphones)

• Frequency Response Range: 50Hz-18KHz

• Channel: Stereo

• Receiving Frequency Adjustment Range:

  • Campus Broadcast Off: 87.0MHz-108.0MHz

  • Campus Broadcast On: 76.0MHz-108.0MHz

• Equivalent Noise: ≥30dB

• Supply Voltage: 3.0V-5.0V

• Current: 40mA

• Size: 40 x 22.5 mm

• Features:

  • PLL digital frequency lock

  • 30-level digital volume control

  • Automatic search and storage function

  • Power-off memory for volume and frequency

  • Mono/Stereo control

  • Serial command control support

Pinout of 87-108MHz FM Stereo Digital Radio Circuit Board

 

1. (L): Left channel audio output

2. (G): Audio ground

3. (R): Right channel audio output

4. (V+): Short press for volume + / long press for continuous +

5. (V-): Short press for volume - / long press for continuous -

6. (F+): Short press for next station / long press to search for a station

7. (F-): Short press for the previous station / long press to search for a station

8. (P): Short press for mute / long press for full band search and save station

9. (DM): USB DM cable

10. (DP): USB DP data cable

11. (TX): TTL serial port sender

12. (RX): TTL serial port receiver

13. (+5V): 5V power input (3-5V wide range)

14. (G): Power ground

15. (ANT): External FM radio antenna end

This module is ideal for a variety of audio projects, providing reliable performance and easy integration into existing systems.