BA1404 Waist BuckleModeFM stereo transmitter kit
(Product code: B04Jt)
The transmitter is a kit, you need to weld and debug it yourself! The machine kit has a matching shell!Our kit products only provide paper materials, not electronic documents, please forgive me!
The classic BA1404 FM stereo transmitter board kit helps to learn and master the working principle of pilot-based FM stereo transmitter. It is easy to assemble, low voltage, high stereo separation, and good sound quality.
DownThe picture shows the supporting circuit schematic diagram and the thumbnail of the assembly drawing. The actual delivery is paper, which is clearer:
![](https://img.alicdn.com/imgextra/i3/12672811/TB2UwOhapXXXXcFXXXXXXXXXXXX-12672811.jpg)
The transmitter is small in size, with a waist buckle,Dimensions without antenna are 8X5.5X1.5cm, Adopt advanced pilot frequency modulation stereo transmission technology, internal circuit adopts BA1404 integrated circuit, can be connected with external stereo sound source, and can be connected with matching lavalier microphone. The stereo sound source jack can double as an external lavalier microphone jack. Audio transmission line or lavalier microphone line also serves as a transmitting antenna,The working frequency is continuously adjustable in the range of 85-115MHz, and the transmitting distance is within 50 to 100 meters. The machine uses 2 AAA batteries for power supply. Optional audio transmission line and lavalier microphone line, supporting detailed circuit schematic diagram, assembly diagram, principle description.
The working current of the transmitter is about 35mA, and the capacity of each AAA battery is 500mAh (milliampere hour) for ordinary high-quality alkaline batteries. The continuous working time of two batteries is about:(500X2/35)X0.6=17 hours. The above is an estimate, for reference only. Actually, there may be a large discrepancy due to the different types of batteries used.
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!