BH1415F100m PLL FM stereo transmitter board
(Product code: 15F100MB)
Product function: Convert the input stereo audio signal into FM wave and send it out for FM radio reception, realize the function of wireless transmission of stereo audio signal, pilot frequency modulation stereo transmission.
The launching board adopts refined double-sided boards, which is made of BH1415F launching board(The size is 82X44X20mm)And MCU control board(The size is 66X42X20mm)Two boards,The working voltage is divided into 5V power supply and 12V power supply.The high-frequency circuit adopts the phase-locked loop frequency modulation stereo transmitter integrated circuit BH1415F, the working frequency is super stable, and there is no frequency drift due to human body induction and other factors. All keys are operated,With frequency digital display, the functions of the four buttons on the control panel are as follows:
F+: Press the frequency step by 0.1MHZ, long press the frequency to advance rapidly,
F-: Press the frequency to step back by 0.1MHZ, long press the frequency to decrease rapidly,
MUTE: Press once to mute, press again to unmute,
ST/MO: Press once for mono working mode, and press again for stereo working mode.
The transmission frequency can be customized within 45-120MHZ, and the customized bandwidth is 20MHZ, such as 70-90MHZ, 75-95MHZ... When purchasing, indicate the required frequency range in the remarks. If there is no special remarks, the frequency range will be 88-108MHZ.A 1-meter flexible wire antenna is used to transmit, and its reference transmission distance is about 50 to 100 meters in an open area, and a 1-meter flexible wire antenna is provided.
The above transmission distance is for reference only, not the basic indicator of the transmitter. The transmission distance is affected by many factors, such as what antenna is used for transmission, the height of the transmitting antenna, the surrounding obstacles, the sensitivity of the receiver, the weather, etc., which will cause great discrepancies, and the actual usage and working environment of each customer Different, it is recommended to measure. If you are not satisfied after receiving the goods, please do not confirm the receipt of the goods, please negotiate and solve them in a friendly manner. Thank you for your cooperation!