Introducció
The AMNVOLT Mini SI4732 DSP Radio Receiver V3S is a compact and versatile full-band radio designed for an exceptional listening experience. Featuring the advanced SI4732 DSP chip and an ESP32-S3 main control, this pocket-sized device supports FM, AM, LSB, and USB modes across HF, SW, MW, and VHF bands. Its upgraded ABS injection-molded casing ensures enhanced durability, while optimized circuitry prevents battery drain after shutdown. Enjoy clear audio with its built-in Hi-Z circuit for weak signal resolution and an independent headphone amplifier for loud volume.
Vídeo: Desempaquetatge i mésview of the AMNVOLT Mini SI4732 DSP Radio Receiver V3S, highlighting the ESP32-S3-WROOM-1 module, optimized circuitry, and durable ABS shell.
Contingut del paquet
Marqueu la casella per als elements següents:
- 1 x V3S Mini SI4732 Pocket Radio
- 1 x Telescopic Antenna
- 1 x Loop Antenna
- 1 x Manual d'instruccions (aquest document)
- 1 cable USB (tipus C)
Característiques clau
- Versió actualitzada: The latest V3S model, released June 2025.
- Durabilitat millorada: Features an ABS injection-molded casing, replacing previous 3D printed versions for increased sturdiness.
- Optimized Power Management: Circuitry has been optimized to eliminate battery drain issues after shutdown.
- Chipset avançat: Utilizes the genuine ESP32-S3-WROOM-1 module and SI4732 DSP chip for superior performance.
- Àmplia cobertura de freqüència: Supports LW, MW, SW (150kHz - 30MHz), and VHF (64-108Mhz) bands.
- Múltiples modes: Capable of receiving FM, AM, LSB, and USB signals (Note: Does not support aviation band).
- Pantalla d'alta resolució: Equipped with a 1.9-inch IPS high-definition color screen (170*320 resolution).
- Adjustable Screen: Supports screen backlight brightness adjustment (32-255 levels) and battery level display.
- Millores d'àudio: Built-in Hi-Z circuit to enhance weak signal resolution and an independent headphone amplifier circuit for loud headphone volume.
- Llarga vida útil de la bateria: Integrated 800mAh battery provides over 10 hours of continuous playback.
- Interfície fàcil d'utilitzar: Includes a detailed menu and setting functions for bandwidth adjustment, quick volume adjustment, and AGC ATT setting.
- Actualitzable el firmware: Open Source System with support for firmware updates.

Figura 1: Producte al llarg deview highlighting key interfaces and the durable ABS shell.

Figure 2: Displaying the radio's detailed menu and setting functions.
Especificacions
| Característica | Descripció |
|---|---|
| Versió de maquinari | V3S by AMNVOLT |
| Model | ATS MINI PRO |
| Control Mestre | ESP-32-S3 |
| Xip DSP | SI4732 |
| Modes de treball | FM/AM/LSB/USB (Note: Does not support aviation band) |
| Bandes receptores | HF/SW/MW/VHF |
| Interval de freqüència | LW, MW, SW (150kHz - 30MHz), VHF (64-108Mhz) |
| Pantalla | 1.9-inch IPS high-definition color screen, 170*320 resolution |
| Brillantor de la pantalla | 32~255 levels, adjustable |
| Port de càrrega | TYPE-C (cannot use fast charging) |
| Interfície d'àudio | 3.5mm three-band stereo |
| Interfície d'antena | SMA-KE (forat interior) |
| Capacitat de la bateria | 800mAh (Rechargeable Battery Pack) |
| Bateria inclosa | Sí |
| CasinMaterial de g | ABS |
| Dimensions del producte | 73.00mm (L) x 32.00mm (W) x 12.00mm (H) / 2.87in x 1.26in x 0.47in |
| Pes del producte | 0.163 kg |
| Funcions | Altaveu integrat, integrat Amplifier, Hi-Z Circuit, Headphone Ampmés viu |

Figure 3: Radio dimensions.

Figure 4: Specialized brackets for the radio.
Configuració
- Carregueu el dispositiu: Before first use, fully charge the radio using the provided Type-C USB cable. Connect the cable to the Type-C port on the radio and a standard USB power source. Note that fast charging is not supported.
- Connecteu l'antena: Depending on your reception needs, attach either the telescopic antenna or the loop antenna to the SMA antenna interface (inner hole) on the radio. Ensure a secure connection.
- Encès: Press and hold the power button (usually integrated with the encoder knob) to turn on the radio.
Instruccions de funcionament
- Encès/apagat: Press and hold the encoder knob to power the device on or off.
- tuning: Rotate the encoder knob to tune through frequencies. The display will show the current frequency.
- Selecció de la banda: Navigate through the menu using the encoder knob (press to select, rotate to scroll) to choose your desired band (FM, AM, LSB, USB).
- Control de volum: Adjust the volume using the dedicated volume control function, accessible via the menu or a quick press of the encoder.
- Ús d'auriculars: For private listening, plug your 3.5mm stereo headphones into the audio interface. The built-in headphone amplifier ensures a loud and clear audio experience.
- Brillantor de la pantalla: Access the menu to adjust the screen backlight brightness (32-255 levels) for optimal viewen diferents condicions d'il·luminació.
- Ajust de l'amplada de banda: Utilize the menu settings to adjust the bandwidth for improved reception quality, especially in crowded frequency environments.
- AGC ATT Setting: Configure the Automatic Gain Control (AGC) and Attenuator (ATT) settings through the menu to optimize signal reception and prevent overload.

Figure 5: Internal components and supported frequency bands.
Manteniment
- Neteja: Use a soft, dry cloth to clean the radio's exterior. Avoid using harsh chemicals or abrasive materials.
- Cura de la bateria: To prolong battery life, avoid completely discharging the battery frequently. Charge the device regularly, even if not in use for extended periods.
- Emmagatzematge: Guardeu la ràdio en un lloc fresc i sec, allunyat de la llum solar directa i de temperatures extremes.
Resolució de problemes
- Sense energia: Ensure the battery is charged. Connect the radio to a power source using the Type-C USB cable.
- Sense so: Check the volume level. If using headphones, ensure they are properly plugged in.
- Mala recepció: Extend the telescopic antenna fully or adjust the position of the loop antenna. Experiment with different antenna types for specific bands. The built-in Hi-Z circuit is designed to improve weak signal resolution.
- Drenatge de la bateria: This V3S model features optimized circuitry to prevent battery drain after shutdown. If you experience unexpected battery loss, ensure the device is fully powered off and contact support if the issue persists.
Actualitzacions de firmware
The AMNVOLT Mini SI4732 DSP Radio Receiver V3S operates on an open-source system and supports firmware updates. This allows for potential improvements in functionality and performance over time.

Figure 6: Firmware update capability.
For detailed instructions on how to perform firmware updates, please refer to the official AMNVOLT website or the comprehensive user manual provided with your device. Always follow the manufacturer's guidelines to avoid damaging the device.
Consells per a l'usuari
- Capacitat Wi-Fi: With the latest firmware, this model can support Wi-Fi functionality. Check for available firmware updates to enable this feature.
- Volum dels auriculars: The independent headphone amplifier circuit ensures a robust audio output. If you find the volume too high, adjust it using the radio's controls.
Garantia i Suport
For warranty information, technical support, or any inquiries regarding your AMNVOLT Mini SI4732 DSP Radio Receiver V3S, please contact the seller or refer to the official AMNVOLT support channels. Keep your purchase receipt for warranty claims.




