Alta Sensibilidade AM Rádio Amador, R10, Receptor PLL de ondas Curtas, 3-23MH, Kit DIY, DC12V

User manual link:

//drive.google.com/file/d/1l9kQyu1b5tOYGOxyFm4MmEqiqP6G3glZ/view?usp=drive_link



Buying:

1. All kits in this shop need to be welded and debugged by the buyer;
2. The installation of the kit is risky. Buyers should correctly evaluate their own technical level and equipment to avoid unsuccessful installation of the kit;
3. There is no paper manual in the package, only the electronic version of the manual. Please note the email address when placing the order, or leave the email address to the customer service;
4. Due to malicious plagiarism, the kit does not provide the circuit diagram of the pre-welded module (SMT part), nor does it provide the source code or firmware of the single-chip microcomputer;
5. The kits are shipped with scattered electronic components. The pictures of the finished products displayed in this store are for reference only when purchasing;
6. If the kit is missing parts, please don't panic, contact customer service, after verification, it will be reissued.

This machine has the following characteristics:

1. Use STC8H1K17 single-chip microcomputer as the main control, built-in PLL local oscillator, covering 3-23MHz, self-contained frequency indication circuit (using 7-segment digital tube, the display unit is 1KHz, the photo has color difference, the actual color is red), stepping supports automatic flying shuttle.

2. The kit adopts the scheme of TA2003 mixing frequency + TA7613 medium/low amplifier, super heterodyne structure, intermediate frequency 10.7MHz.

3. Our original code, on-board digital control volume potentiometer, supports automatic saving of configuration, and supports adjustment of IF frequency and crystal oscillator frequency.

4. 12V power supply, the PCB board size is 71*100mm, which can be conveniently placed in an aluminum chassis of 76*35*100mm.