Designed for compact portability and high sensitivity, this receiver rivals the performance of high-end radios on the market, covering medium wave, short wave, and FM broadcasts, and also supports shortwave single-sideband reception. The main control module uses the ESP32-S3-N16R8 WiFi + Bluetooth 5.0 wireless module, a dual-core IoT MCU module. The main chip uses the SI4732 chip, supporting AM/FM/SW/RDS reception. The display module uses a 1.9-inch color TFT display with a 170 x 320 dot matrix, providing clear and natural colors. A RF receiver op-amp circuit significantly improves sensitivity. Basic Usage Instructions: 1. Push the side power switch upward to turn on the radio. 2. Short-press and hold the encoder (300ms): Switches between search mode (magnifying glass icon in the upper left corner) and frequency mode (+- and - icons in the upper left corner). In SSB mode, this enables BFO adjustment. 3. Long press the encoder (700ms): Adjusts the volume. 4. Single-press the encoder: Switches to the band menu. 5. Double-press the encoder: Sets the menu. 6. Triple-press the encoder: Reads a stored station (auto-search is automatically turned off after reading a SSB station). 7. Quadruple-click the encoder: Calibrates the battery voltage. 8. Press and hold the encoder for more than 2 seconds: Soft-off/on. 9. Press and hold the encoder to power on: Clears all band settings and restores defaults. 10. Press and hold the encoder to adjust the volume. This function is easy to misuse and requires proficiency. Other issues: 1. Add aviation band (requires external down-conversion 100 inverter) 2. Add WIFI function (1) Select the network configuration in the WiFi in the settings, the screen prompts "Network configuration". Connect the mobile phone or computer to the WiFi "Network configuration WIFI". After the connection, the network config