Digital Stereo FM Radio Transmitter/Receiver Module 87-108MHz Frequency Modulation Auto Storage Digital Noise Reduction DC 3-5V

Model Number : FM Radio Transmitter/Receiver ModuleOperating Temperature : standardDissipation Power : standardSupply Voltage : 5vApplication : FM RadioCondition : NewType : Voltage RegulatorBrand Name : diymore : Mainland China
Product features:1. Advanced digital Audio signal processing (DSP) technology and FM modulation phase-locked loop (PLL) are adopted to make the sound more realistic and the performance more stable.2. The LCD display screen is more intuitive and accurate, with very low power consumption and minimal noise interference.3. Fully digital control, more convenient to operate, making the product more stable and durable.4. Power and memory frequency and volume.5. Wide application range.Product :Output power: 500mWFrequency range: 50Hz -18KHzReceiving frequency: 87.0MHz-108.0MHzEquivalent noise:>30dBPower supply voltage: 3V-5VScope of application: FM stereo radioPackaging list:Transmission module * 11： Product features:1: Advanced digital Audio signal processing technology (DSP) and FM phase-locked loop modulation technology (PLL) are used to make the sound quality more realistic, the performance more stable, and the working frequency does not shift for a time.2: LCD display is more intuitive and accurate, with extremely low power consumption and minimal noise interference.3: It has the function of automatically searching for and storing radio stations, making it easy to operate and use.4: Built in 30 level digital volume adjustment, easy to complete with on operation.5: Automatic memory of data before power outage.6: Support serial port AT instruction control.7: Using quartz crystal to stabilize the frequency, the emission frequency no er drifts when the temperature changes.8: Automatically search for signal frequency bands in all frequency bands and store memory.2： Product :Output power: 500mW (driving headphones)Frequency response range: 50Hz to 18KHzChannel: StereoReceiving frequency adjustment range:Turn off campus radio at 87.0MHz-108.0MHz and turn on campus radio at 76.0MHz-108.0MHzEquivalent noise: ≥ 30dBPower supply voltage: 3.0V-5.0VCurrent: 40mAAttention: Radio (any radio) is a radio sensitive device, and interference from the power supply or nearby areas may affect the normal operation of the module. Therefore, it is recommended to use a battery or power frequency transformer to stabilize the power supply for the module. Switching power supplies (such as mobile phone chargers, and any other switching power supplies), power banks, switch type DC-DC converters, and nearby D-class amplifiers, microwave ovens, and other devices that may generate high-frequency electromagnetic interference are not allowed. Otherwise, the electromagnetic interference generated by these devices will be spatially coupled to the RF front-end of the module, causing noise in the received and restored signals.3： Instructions for use:1: Line connectionAll functional outputs of this module are reserved with external ports, and users need to connect the corresponding circuit modules to function properly. : Connected to audio cableThe corresponding ports AGND, Output R, and Output L of the module are respectively connected to the ground, left channel, and right channel of the audio output line. : Connected to power cordThe module corresponds to ports GND and VCC, which are respectively connected to the negative and positive poles of the power supply (battery). It is recommended to use a battery or other regulated power supply for the power supply. Switching power supplies without filters (such as mobile phone chargers and other low-quality switching power supplies) cannot be used, otherwise the interference generated by the power supply will affect the normal operation of this module. The normal working voltage of this module is 3.0-5.0V, and the power supply voltage should not exceed this range. : Connect onAll ons in this module are reserved with ports for export, and customers can access the corresponding function ons as needed. You can use ordinary light touch ons to connect one end to the corresponding on port of this module, and the other end to the GND or AGND end of the module. Some ons have a press function (such as volume+/- press for continuous+/- volume), and press for more than 2 seconds is effective. : Connected to antennaThe ANT port is used to connect FM antennas. In order to better receive (transmit) FM signals, it is recommended to connect a 75cm rod antenna externally, and there should be no obstacles near the antenna as much as possible. : Connect to a serial port (no serial port control required)The module reserves a TTL level serial port control interface, and the communication between the TTL serial port and this module needs to be connected to the UART of the module_ RX, UART_ TX and GND can use external MCU (microcontroller) or computer serial port to send instructions to control the related functions of the module. Note: Due to the fact that the computer serial port level is not TTL level, it is necessary to connect the RS323 level to TTL level replacement device or use a USB to TTL level serial port module to communicate with this module when connecting to the computer for communication. Because the serial command control module requires a certain level of computer professional knowledge, buyers who do not understand do not need to struggle. All information can be found in the baby's instructions, and customer service does not provide technical guidance in this regard.2: Automatic channel search:This module comes with FM radio storage function. press and hold "Automatic Station Search" to start automatic search and save the stations that can be heard. After the search is completed, the first station P01 will be automatically played. Users can press the "Previous Station" or "Next Station" on to switch to the searched station.3: Mono/Stereo:This module can flexibly set the mono demodulation and stereo demodulation modes. The two MONO solder joints on the back of the PCB board are connected together for mono demodulation mode, and disconnected for stereo demodulation mode.4: User settings:This module can set the backlight status and whether to listen to the campus radio frequency band based on the specific usage of the user. The setting method is as follows. press and hold VOL+in the power off state, and after the VOL key is powered on, the LCD displays C1 indicating that campus broadcasting is turned on, and C0 indicating that the campus broadcasting frequency band is turned off. After restarting, the settings will take effect. When setting the backlight status, while the power is off, press and hold the up and down radio ons to turn on the device. The display B1 indicates that the backlight is constantly on, and B0 indicates that the backlight is turned off for 20 seconds. After restarting, the setting takes effect. Change the setting status and repeat this step to switch. The factory is uniformly set to not turn on the campus broadcast frequency band, and the backlight is turned off for 20 seconds without operation.5: Precautions:1: The power supply voltage must not exceed the power supply voltage range of this module.2: Do not touch the back components of the module during operation to avoid affecting the normal operation of the module or causing short circuits to burn the module.4： Scope of application: FM stereo radio, digital radioPackage List1X module