Radio Module Stereo FM Receiving Board (no Need for Antenna - Headphones and Antenna Cable)

Frequency range :76-108MHZ
Working voltage :DC 3-12V
Working current :25mA
Shutdown current :50uA
Sensitivity :1.6uV(-103dBm)SINAD>12dB
Signal-to-noise ratio :56dB
Resolution :34dB
Total harmonic distortion of audio :1%

Product Introduction

The FM FM radio module, in order to reduce the background noise of the circuit, improve the signal ratio and provide the listener with a better listening quality, adopts the method of turning off the peripheral circuit after the key is not operated for 3 minutes, which reduces the disturbance of background noise. At the same time, it also has a key anti-misoperation function (simple keyboard lock).

Function Description

   1.There is no key operation. After 2 minutes, the red LED indicator light goes out.
   2.When the red LED indicator light goes out, pressing any key will not have the corresponding function; only the LED indicator light will light up. Only after the red LED indicator light is lit up will each key have the corresponding function.
   3. Radios are radio products. Non-professionals should not use switching power supplies for power supply, such as power banks or mobile phone chargers, or directly share digital circuit power supplies, etc.
   4. The audio output port is a 3.5mm dual-channel stereo driver socket, with 3 sections, namely left L/ Right R/ Ground G. The original headphones of the mobile phone cannot be used.
   5. Connect the power amplifier subsequently. Do not connect it to Class D power amplifiers or digital power amplifiers. The interference problem of this type of power amplifier cannot be solved by non-professionals. Commonly used A/B types can.
   6. After holding down the V- key to turn off the device, press any key to turn it on. Once the device is turned on, it will automatically play the radio before the shutdown. If the power is cut off and then powered on again, a new search is required.