GOOZEEZOO Si4732-ESP32 V3 Mini Radio Instruction Manual

1. Introduction

This manual provides comprehensive instructions for the operation, maintenance, and troubleshooting of your GOOZEEZOO Si4732-ESP32 V3 Mini Radio. This compact and versatile receiver supports AM, FM, LSB, USB, HF, SW, MW, and VHF bands, offering a wide range of listening experiences. Designed for portability, it features an 800mAh battery, making it ideal for outdoor activities, travel, and daily use.

Please read this manual thoroughly before using the device to ensure proper functionality and to maximize your listening enjoyment.

2. Product Overview

2.1 Key Features

• New Version 3.0 Firmware: Enhanced seek sensitivity for easier station discovery and optimized performance.
• Built-in Hi-Z Circuit and Speaker: Improved sound quality, increased volume, and better signal reception.
• Compact and Portable Design: Measures 3*1.4*0.8 inches, lightweight, suitable for outdoor activities.
• High Sensitivity and Strong Anti-Interference: Powered by ESP32 and SI4732 chips, offering clear reception across frequencies with adjustable BFO for SSB mode.
• Vibrant 1.9-inch IPS Color Display: Brightness adjustable for indoor and outdoor use, clear navigation.
• Long Battery Life: 800mAh battery provides up to 10 hours of continuous listening.
• Worldwide Band Support: Covers FM (64–108 MHz), AM (520–1710 kHz), SW (2.3–26.1 MHz), and LW (153–279 kHz), including HF, SW, MW, and VHF bands.

2.2 Package Contents

Verify that all items are present in the package:

• GOOZEEZOO Si4732-ESP32 V3 Mini Radio
• Owner's Manual (this document)
• USB Charging Cable (Type-C)
• Telescopic Antenna
• Loop Antenna (for specific models/configurations, refer to product images)

2.3 Product Diagram

Familiarize yourself with the components of your radio.

Figure 2.3.1: Front view of the GOOZEEZOO Si4732-ESP32 V3 Mini Radio connected to a loop antenna. The display shows "VHF FM 90.50 MHz".

Figure 2.3.2: Diagram highlighting the built-in Hi-Z circuit for improved sound and reception, shown with the radio and loop antenna.

Figure 2.3.3: Illustration of the radio with its telescopic antenna extended, emphasizing the V3.0 built-in speaker for enhanced sound quality and volume.

Figure 2.3.4: The radio displaying a QR code on its screen, which can be scanned to access the user manual. This image also shows the telescopic antenna and tuning knob.

3. Setup

3.1 Charging the Battery

The radio is equipped with an 800mAh Lithium Ion battery. Before first use, it is recommended to fully charge the device.

1. Connect the supplied USB Type-C cable to the charging port on the radio.
2. Connect the other end of the USB cable to a compatible USB power adapter (not included) or a computer USB port.
3. The charging indicator on the display will show the charging status. A full charge typically takes approximately 3 hours.
4. Once fully charged, the battery provides up to 10 hours of operation.

3.2 Attaching the Antenna

The radio supports both a telescopic antenna and a loop antenna for different frequency bands and reception needs.

1. For general FM/VHF reception, screw the telescopic antenna into the antenna port on the top of the radio. Extend the antenna fully for optimal reception.
2. For improved HF/SW/MW/LW reception, connect the loop antenna to the appropriate antenna input. Ensure a secure connection.

4. Operating Instructions

4.1 Power On/Off

• To power on, press and hold the power button located on the side/front of the device until the screen illuminates.
• To power off, press and hold the power button again until the screen turns off.

4.2 Basic Navigation and Tuning

The radio features a 1.9-inch IPS color screen and a tuning knob for navigation and frequency adjustment.

• Tuning Knob: Rotate the knob to adjust frequency or navigate through menu options. Press the knob to confirm selections or enter menus.
• Band Selection: Use the on-screen interface or dedicated buttons (if present) to switch between FM, AM, SW, LW, HF, MW, and VHF bands.
• Frequency Adjustment: Once a band is selected, rotate the tuning knob to fine-tune the frequency. The step size can often be adjusted in settings.
• Seek Function: Utilize the enhanced seek sensitivity to automatically find available stations. Refer to the on-screen prompts for initiating a seek.

4.3 Mode Selection (AM/FM/LSB/USB)

The radio supports various modulation modes for different types of broadcasts.

• FM (Frequency Modulation): Primarily used for local broadcast radio.
• AM (Amplitude Modulation): Used for MW (Medium Wave) and some SW (Shortwave) broadcasts.
• LSB (Lower Sideband) / USB (Upper Sideband): Used for Single Sideband (SSB) communications, common in amateur radio and some shortwave broadcasts. The adjustable BFO (Beat Frequency Oscillator) allows for fine-tuning in SSB mode to clarify signals.

4.4 Advanced Settings

Access the radio's settings menu to customize various parameters:

• Brightness Adjustment: Adjust the screen brightness for optimal viewing in different lighting conditions.
• BFO Adjustment: Fine-tune the BFO for clear SSB reception.
• Firmware Update: The device is designed for easy firmware flashing and upgrades. Refer to the official website for the latest firmware and instructions: https://esp32-si4732.github.io/ats-mini/manual.html.
• Encoder Reverse: If the tuning knob direction feels reversed, this setting can be adjusted in the SETUP menu.
• Squelch: Adjust the squelch threshold to reduce background noise on weak signals.

5. Maintenance

5.1 Cleaning

To maintain the appearance and functionality of your radio:

• Wipe the exterior with a soft, dry cloth.
• Do not use abrasive cleaners, solvents, or strong chemicals, as these may damage the finish or internal components.

5.2 Storage

When not in use for extended periods:

• Store the radio in a cool, dry place, away from direct sunlight and extreme temperatures.
• Ensure the battery is partially charged (around 50%) before long-term storage to preserve battery health.

6. Troubleshooting

7. Specifications

8. Warranty and Support

8.1 Warranty Information

For specific warranty details, please refer to the warranty card included with your product or contact GOOZEEZOO customer support. The warranty typically covers manufacturing defects for a specified period from the date of purchase.

8.2 Customer Support

If you encounter any issues or have questions not covered in this manual, please contact GOOZEEZOO customer support through the retailer where you purchased the product or visit the official brand store on Amazon:

GOOZEEZOO Official Store

For firmware updates and additional technical information, please visit: https://esp32-si4732.github.io/ats-mini/manual.html