R030 76.0MHz-108.0MHz FM Radio Module Stereo FM Receiver Board Suitable for 32-ohm Earbuds

- Power supply: DC 3.0V to 12V

- Working current: 22mA

- Shutdown current: 30uA

- Receiving frequency range: 76.0MHz-108.0MHz

- Sensitivity: 1.3uV

- Volume: 9 levels. Level 0 for mute mode, and level 8 for maximum volume

- Output: Can directly drive universal earplugs. Can also be directly used as amplifier signal input

- Board size: 53mm x 31.7mm (LxW)

- Frequency and volume have power-off memory function

- In the off state, press any button to turn on. And long press V- button to turn off

- 1 x FM Receiver Board

- Weight: 0.15kg

1. Short press the F+ button to search for radio stations upwards. After the station is found, it will stop and play this station. Long press the F+ button to increase the receiving frequency by 0.1MHz.

2. Short press the F- button to search for radio stations downwards. After the station is found, it will stop and play this station. Long press the F- button to decrease the receiving frequency by 0.1MHz.

3. Short press the V+ button to increase the volume by one level, and the maximum level is 8. Long press the V+ button to restore the factory default parameters (frequency 99MHz and volume level 6).

4. Short press the V- button to reduce the volume by one level. The minimum level is 0 representing mute mode. Long press the V- button to shut down.

5. After shutting down, press any button to turn on.

6. Without button operation, the backlight will go off after 30 seconds. The LCD display will go off after three minutes, and the peripheral circuits will enter the sleep state one after another.

7. After the light goes out, press any button to wake up the relevant circuit, and the light and screen will resume display. This button has no function and only has the function of awakening. After the light comes on, each button has the corresponding function.

8. Line O socket is for audio output (standard 3.5mm specification). It can directly drive commonly used 32 ohm earplugs.

9. ANT socket is used to connect an antenna. 

1. Is the module stereo?

Answer: Yes, it is two-channel stereo.

2. How is the sound separation?

Answer: Stereo separation indicates the degree of isolation between the left and right channels in a stereo sound system. It actually reflects the degree of crosstalk between the left and right channels. If the crosstalk between the two channels is large, the stereo sense of the reproduced sound will be weakened. Stereo separation is usually expressed as the difference between the signal level in one channel and the level leaking into another channel. If the separation is poor, the stereo sense will be weakened. The stereo separation of FM stereo broadcasting specified by the European Broadcasting Union is >25dB, and the indicator of this module is 35dB.