T030 Stereo FM Transmitter Module FM Transmitter Board Wireless Audio Transmission 76M-108M

T030 Stereo FM Transmitter Module FM Transmitter Board Wireless Audio Transmission 76M-108M

T030 Description:
It adopts advanced MCU, novel design, superior performance, and extremely low power consumption. Digital PPL tuning method is used inside transmitter chip, and there will be no frequency offset or frequency running. Meet the daily use of users. Since the working state of each chip is controlled by program, after the transmission is normal without control, the related peripheral circuits are put into sleep state one after another, and can wake up quickly when needed, so that the power consumption is extremely low, more energy-saving, and greatly extends the working life of the power supply. Minimize the circuit background noise and interference, and greatly improve the signal-to-noise ratio.

This transmitter module uses American stereo transmitter IC, stereo transmitter, also can only input mono. Transmitter frequency covers China, Japan, Europe FM frequency band, 78MHz to 108MHz adjustable. Input coupling and signal coding are designed by sophisticated algorithms, and the sound is demodulated and played back. No matter treble or bass, it has first-class performance. The sound quality is very good. Distortion rate and signal-to-noise ratio have met the national standard and reached broadcast-level standard.

Functions:
* Two-channel FM stereo transmitter
* Power-off memory function
* Working frequency display
* Adjustable input volume and transmission frequency
* Support wide voltage power supply
* Low working current, high emission efficiency, durable power supply
* Factory reset function
* Ultra-low background noise
* Reverse polarity protection

Using Instruction:
- Button: short press, frequency decreases by 0.1MHz;
+ Button: short press, frequency increases by 0.1MHz. Long press to restore factory settings;
VOL Button: Long press to enter input volume adjustment state, a total of 5 levels, through the + or-button to adjust (Level 1 volume is the lowest and Level 5 is the highest);
Press any button to wake up backlight. After 30 seconds, the backlight will automatically turn out. LCD screen will automatically turn off display when there is no operation for 3 minutes.

Specifications:
* Item name: Two-channel stereo FM transmitter module
* Working voltage: DC 3.6V-15V
* Working current: 17mA
* Product size: 52mm/2" long, 32mm/1.3" wide

Package Included:
* 1 x Set of FM Transmitter Module

Volume Adjustment:
Audio signal input has 5 levels of volume. Level 1 is the smallest volume, Level 5 the largest volume, the factory default is Level 3. The principle of adjusting the volume of input signal is as follows: the size of input audio signal should be adjusted to the maximum without distortion, which is the most appropriate, which will get the maximum audio signal-to-noise ratio during playback. For beginners, you can leave it alone.


FAQ:
1. How far is the transmitting distance?
Answer: Under favorable terrain conditions, use radio for Tecsun to receive at a distance of 100 meters, and use the built-in radio of mobile phone to receive at a distance of 50 meters. (Attention: The distance is different depending on antenna, terrain, weather, surrounding buildings and other conditions. According to the actual environment, the actual measurement shall prevail.)

2. If the radio is set to the same volume, will the playback volume be lower than that of a radio station?
Answer: The playback volume is equivalent to the volume of the received radio station, and there is no obvious volume difference (corresponding to modulation depth, frequency offset parameters).