Description

76-108MHZ rechargeable FM digital radio DIY parts with power amplifier

Product selling point:

1. Using high-quality materials, the quality is guaranteed

2. Using advanced digital audio signal processing technology (DSP) and FM phase-locked loop modulation technology (PLL) to make the sound quality more realistic, the performance is more stable, and the working frequency for a long time has no offset

3. The LCD display is more intuitive and accurate, with extremely low power consumption and minimal noise interference

4. With the function of automatically searching for radio stations and storing radio stations, the operation is easy to use

5. Built-in 30-level digital volume adjustment, which can be easily completed by key operation

6. Automatically remember the data before the power failure

7. All frequency bands (76-108MHZ) automatically search for signal frequency bands and store in memory

parameter:

PCB board size: 6.3CM*4.4CM

Shell size: 11.9CM*8.8CM*2.7CM

Support speaker: 8 ohms within 5W

Output power: 5W

Frequency response range: 50Hz-18KHz

Channel: use speaker for mono, use earphone for dual channel

Ordinary stereo headphones with a diameter of 3.5mm can be used, but if you buy one with a shell, you need to pay attention: the diameter of the headphone handle must be less than 7mm! Otherwise it won't go in.

Receiving frequency adjustment range:

Close campus radio 87.0MHz-108.0MHz, open campus radio 76.0MHz-108.0MHz

Equivalent noise: ≥30dB

Supply voltage: 3.0V-5.0V

Battery model: 18650

Precautions:

Do not touch the components on the back of the module during operation, so as not to affect the normal operation of the module or cause a short circuit to burn the module.

This module is a radio-sensitive device, and interference from the power supply or nearby may affect the normal operation of the module. Therefore, it is recommended to use a battery or a power frequency transformer to obtain a stable voltage after voltage stabilization for the power supply to the module. Switching power supplies (such as mobile phone chargers, and any other switching power supplies), power banks, and Class D power amplifiers, microwave ovens and other devices that are working nearby cannot be used.

Instructions for use:

After each module is completed, it will automatically search for stations first. Press and hold the "Auto Search (AUTO button)" to automatically search and store the radio stations that can be listened to.

After the search is completed, the first radio station P01 will be played automatically. The user can press the "previous station" or "next station" key to switch the searched station.

This module can set the backlight status and whether to listen to the campus radio frequency band according to the specific usage of the user. The setting method is as follows.

In the power-off state, press and hold the VOL+, VOL- key, then power on and turn on the LCD display C1 means to open the campus radio C0 means to close the campus radio frequency band, the setting will take effect after restarting.

To set the backlight state, press and hold the up and down radio buttons at the same time when the power is off. The display shows B1 means the backlight is always on, B0 means the backlight is turned off for 20 seconds, and the settings take effect after restarting. To change the setting state Repeat this step to switch. The factory is uniformly set to not open the campus broadcast frequency band, and the backlight will turn off for 20 seconds without any operation.

Package list:

DIY Parts Set*1