General description This 9.9KHz-181MHz SMA Interface Mini Loop Antenna is a compact and portable radio receiver featuring an ESP32-S3 main control and a 1.9-inch IPS high-definition color screen. It utilizes the SI4732 chip, supporting full-band broadcast including LSB, USB, AM, and FM modes. The built-in 800 mAh battery provides a battery life of approximately 10 hours or more, making it ideal for on-the-go use. Technical specifications Receiving frequency band: 9.9KHz to 181MHz (HF SW MW VHF) Screen: 1.9-inch IPS high-definition color Battery capacity: 800mAh Charging interface: TYPE-C (not compatible with fast charging) Audio interface: 3.5mm three-band stereo Material: PETG carbon fiber Measurement allowed error: +/- 1-3cm Compatibility and accessories Includes 1 x MINI SI4732 radio Includes 1 x loop antenna Usage The portable loop antenna allows for directional reception. Users can rotate the antenna to find the optimal receiving angle, ensuring clear and stable signals. Other