Receiver-ul Radio V4 AMNVOLT ATS Mini SI4732 este un dispozitiv nou, perfect pentru a asculta posturile de radio din toate benzile. Compact și ușor de utilizat, acest receiver este alegerea ideală pentru pasionații de radioamatorism.

Description
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V4 Upgrade Details:
1. Added shielding cover to the Si4732 receiver section to suppress electromagnetic interference; added ESD protection at the antenna input for chip safety.

2. Hi-Z circuit moved to the front end of the antenna path, powered by more stable VCC_RADIO, to preserve signal resonance and reduce noise.

3. New feature: Wired headphones can now be used as an FM antenna (Note: Headphones are not included in the package. Buyers need to prepare their own. Best results are achieved in strong FM signal environments with longer headphone cables).

4. Left and right audio channels have been swapped; amplifier and speaker parameters have been readjusted to improve sound quality.

5. Upgraded to more durable and higher-quality components: sturdier retractable antenna and non-slip knob caps for better handling.

Features:
1. Equipped with ESP32-S3 main control + SI4732 DSP, supports ALL Band broadcasting, LSB, USB, AM, and FM modes, with AGC/ATT function.

2. Features a 1.9-inch IPS high-definition color screen with adjustable backlight brightness and battery level display.

3. Built-in 1W power cavity speaker for loud and clear sound quality.

4. Supports firmware upgrades; pre-installed firmware version is at least VER.2.3.1 (Regular updates are recommended for optimal performance).

5. Built-in headphone amplifier circuit for powerful audio output when using headphones.

6. Integrated Hi-Z circuit to enhance weak signal resolution.

7. Uses genuine ESP32 modules (ESP32-S3-WROOM-1-N16R8), ensuring higher reliability compared to counterfeit modules.

Specifications:
- Brand: AMNVOLT
- Model (Hardware Version): V4
- Housing Material: CNC metal or ABS injection molding (two options available)
- Main Control: ESP-32-S3
- Operating Modes: FM/AM/LSB/USB (Note: Does not support aviation bands)
- Receiving Bands: HF/SW/MW/VHF
- Frequency Range: LW, MW, SW (150kHz - 30MHz), VHF (64-108MHz)
- Screen: 1.9-inch, 170*320 resolution
- Screen Brightness: 32~255 levels, adjustable
- Charging Interface: TYPE-C (Not compatible with fast chargers)
- Audio Interface: 3.5mm 3-pin stereo
- Antenna Interface: SMA-KE (inner hole)
- Battery Capacity: 800mAh

Package List:
1 x AMNVOLT V4 Radio
2 x Antennas (Telescopic Whip Antenna / Rotatable Loop Antenna)