BH1415F 200m (0.5W) FM stereo transmitter board
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Product code: 15F200MB
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Product function: Convert the input stereo audio signal and microphone signal into FM wave and send it out for FM radio reception, realize the function of wireless transmission of stereo audio signal and microphone signal, pilot frequency modulation stereo transmission.
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The main circuit adopts phase-locked loop FM stereo transmitter integrated circuit BH1415F, high stability, adopts STC12C5204AD-35I-SKDIP28 single-chip control, digital display working frequency, power-down memory frequency, mute function, stereo/mono conversion function, independent audio Volume control knob and microphone volume control knob. Button operation, easy to use! The boardApproximate dimensions: 100X70X35mm, weighing about 100 grams.
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![](https://img.alicdn.com/imgextra/i3/12672811/TB2PJsyapXXXXaaXXXXXXXXXXXX-12672811.jpg)
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![](https://img.alicdn.com/imgextra/i2/12672811/T2AFFmXp4XXXXXXXXX_!!12672811.jpg)
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![](//img.alicdn.com/1/1/12672811/12811028442162596/T2md8kXE8XXXXXXXXX_!!12672811.jpg)
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![](https://img.alicdn.com/imgextra/i2/12672811/T2OeQqXi0XXXXXXXXX_!!12672811.jpg)
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This transmitter board uses BH1415F+SCM+C9018+C3355+C2053 circuit, RF output power is about 0.5W, working voltage is 12V, working current is about 150mA, DC socket VCC power polarity is positive and negative, with power polarity protection , Reversing the polarity will not cause damage to the circuit. The reference transmitting distance of the open area is about 200 meters with the Q9 head 75 cm whip antenna that comes with this board, and the reference transmission distance is about 500 to 1000 meters with the outdoor GP antenna for transmitting in the open area. The transmitting antenna can be a Q9 whip antenna or an outdoor GP antenna, and a soft wire can be used to transmit if the transmission distance is not too far required. The transmitter board is equipped with stereo audio input socket, audio volume control knob, microphone input socket and microphone volume control knob.The power button, audio and microphone volume control knobs are delivered.The 75 cm Q9 rod antenna is an optional accessory.The transmitting frequency can be customized by customers within 70-120MHZ,The customized bandwidth is 20MHZ, such as 70-90MHZ, 88-108MHZ and so on.Please specify the required frequency band in the remarks when purchasing. If there is no remark, the default 88-108MHZ will be sent.
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\The transmitter board has a frequency digital display function and four key functions as follows:
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F+: Press the frequency step by 0.1MHZ, long press the frequency to advance rapidly,
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F-: Press the frequency to step back by 0.1MHZ, long press the frequency to decrease rapidly,
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MUTE: Press once to mute, the display will flash and go off, press again to unmute, and the display will return to normal display.
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ST/MO: Press once for mono working mode, the display shows a horizontal line, press again for stereo working mode, and the display shows two horizontal lines.
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Note: This board does not have a matching power supply, if you want to buy a power supply, please click the following link:
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http://item.taobao.com/item.htm?spm=a1z10.5.w4002-2498222905.43.XqVzlW&id=3806978337
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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!
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