Product Details

Description:
The transmitter board adopts exquisite double-panel, high quality, high-quality high-frequency dedicated electronic components, and the PCB pads are tinned to ensure the quality of welding. The assembled products can be directly put on the market. The quality of non-general student training kits is comparable.

Feature:
Convert stereo audio signal input into FM radio transmission of FM wave transmission, realize the function of wireless transmission of stereo audio signal, pilot system FM stereo transmitter.

The high frequency circuit adopts PLL FM stereo transmitter integrated circuit chip BH1417F (or replaces BH1416F by itself), the working frequency is quite stable, because the fuselage does not produce induced frequency drift, the working frequency is set by DIP switch control. If BH1416F, the transmitting frequency can be debugged. The lower end of the seven frequencies 76.8, 77.0, 77.2, 77.4, 77.6, 77.8, 78.0 are optional or optional high 88.0, 88.2, 88.4, 88.6, 88.8, 89.0, 89.2 seven frequencies, using a one-meter antenna to transmit distance to open areas About 100 meters; if BH1417F, the transmission frequency can be debugged at the low end or high frequency 87.7, 87.9, 88.1, 88.3, 88.5, 88.7, 88.9 seven 106.7, 106.9, 107.1, 107.3, 107.5, 107.7, 107.9 seven frequency available options Just change the code to replace the DIP switch code. Suitable for teaching or school counseling students radio broadcasters to assemble, install and debug complete specifications (including schematics, assembly drawings), without audio transmission lines.

Specification:
Model: BH1417F
Size: 80x45mm
Operating voltage: 12V, 5V version can use USB port power (Option)
Antenna length: 1m
Transmission distance: 50-100 meters (open space)

The 14 operating frequencies can be selected via the DIP switch:
1 L L L L 87.7MHZ
2 H L L L 87.9 MHZ
3 L H L L 88.1 MHZ
4 H H L L 88.3 MHZ
5 L L H L 88.5 MHZ
6 H L H L 88.7 MHZ
7 L H H L 88.9 MHZ
8 L L L H 106.7 MHZ
9 H L L H 106.9 MHZ
10 L H H H 107.1 MHZ
11 H H L H 107.3 MHZ
12 L L H H 107.5 MHZ
13 H L H H 107.7 MHZ
14 L H H H 107.9 MHZ

The kit can also be applied to the BH1415F IC, and the MCU control section only needs to be designed by the buyer himself. Using the BH1415F's practical experience reference: First, using the BH1417F circuit, after successfully debugging the BH1417F, place the BH1415F under the DIP switch soldering, and connect the programming part of the circuit. This will at least ensure that the hardware part works normally. Note that the BH1415F must be soldered.

12V

5V