1. The microcontroller adopts STC8H8K64U, with built-in PLL local oscillator and OLED screen display. The receiving frequency is 88-108MHz (FM mode) for FM broadcasting and 118-136MHz (AM mode) for aviation band. 2. Adopting the TA2003+TA7640 scheme, FM mode primary frequency conversion, intermediate frequency 10.7MHz; AM mode secondary frequency conversion, with first intermediate frequency of 10.7MHz and second intermediate frequency of 455KHz. Support tuning indication. 3. On board CNC volume potentiometer, supporting noise reduction function. 4. Support automatic channel search, support VFO/ two channel adjustment modes, and in mode, each band can store 50 frequencies. 5. The SMD devices have been pre welded, greatly reducing the difficulty of amateur assembly. Purchase instructions: All kits in our store require the buyer to complete welding and debugging on their own; Kit installation is risky, please properly evaluate your own technical level and equipment to avoid unsuccessful assembly and debugging. The kit does not provide circuit diagrams for pre-soldered modules, microcontroller source code or firmware. 12V power supply, PCB board size is 9.4 x 13cm, this kit includes a matching 97 x 40 x 130mm aluminum chassis (with speakers). Colour:black Material:PCB+aluminum Package Contents: 1 Set of Receiver Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.