Ujjdwiurgh 3-23Mhz AM Radio Shortwave Receiver Short Wave Broadcast Signal PLL Receive DIY Kit LED Digital Display Frequency

1. It uses STC8H1K17 microcontroller as the main control, built-in PLL local oscillator, covering 3-23MHz, with built-in frequency indication circuit (using 7-segment digital tube, display unit is 1KHz, the photo has color difference, it is actually red), and stepping supports automatic . 2. The kit adopts TA2003 mixer + TA7613 medium/low amplifier solution, superheterodyne architecture, intermediate frequency 10.7MHz. 3. code of this store, onboard digital volume potentiometer, supports automatic configuration saving, and supports adjustment of intermediate frequency and crystal frequency.