Si4732 Mini Radio V4 ATS Pocket Radio, Mode: AM/FM/LSB/USB Band: HF SW MW VHF All Band Portable Radios with Headphone Amplifier, 800mAh Battery for

Si4732 Mini Radio V4 ATS Pocket Radio, Mode: AM/FM/LSB/USB Band: HF SW MW VHF All Band Portable Radios with Headphone Amplifier, 800mAh Battery for

High Performance & All-Band Support: Featuring the AMNVOLT V4 ATS MINI radio with an advanced ESP32-S3 main controller and SI4732 DSP chip, this portable solution covers all broadcast bands and supports LSB USB AM FM modes for versatile listening experiences. HD Display & Adjustable Brightness: The full-band DSP radio is equipped with a 1.9-inch IPS color screen that offers adjustable backlight levels and real-time battery status display, ensuring optimal visibility and intuitive control every time. Powerful Volume & Superior Sound: Designed as a portable AM FM radio receiver, it features a built-in 1W cavity speaker delivering rich, loud audio, along with an upgraded earphone amplifier circuit for clear high-volume headphone listening. Enhanced Signal Reception: This LSB USB transistor pocket radios model adopts a Hi-Z circuit to improve weak signal resolution, elevating your listening clarity even in challenging environments and offering reliable everyday operation. Firmware Upgradable & Authentic Module: The Si4732 DSP radio allows hassle-free upgrades to the latest firmware for optimal use and comes equipped with genuine ESP32-S3-WR OOM-1-N16R8 module, guaranteeing original quality for lasting performance.

Specification:

Origin: Mainland China

Important Notice:

1. Headphones are not included in the shipment. The headphones shown in the image are for demonstrating FM antenna functionality only. Please provide your own headphones!

2. If you have selected the CNC metal casing version, please be aware that the CNC aluminum alloy material provides some shielding against wireless electromagnetic signals. While this enhances interference resistance, it may also weaken Wi-Fi signal strength. Please acknowledge this before purchasing.

V4 Upgrade Details:

1. Added shielding cover to the Si4732 receiver section to suppress electromagnetic interference; incorporated ESD protection chips at the antenna input for enhanced safety.

2. Relocated the Hi-Z circuit to the front end of the antenna path and adopted a more stable VCC_RADIO power supply to preserve signal resonance and reduce noise.

3. Added functionality to use wired headphones as an FM antenna (requires use in environments with strong FM signals and sufficiently long headphone cables for optimal performance).

4. Left and right channels have been swapped; amplifier and speaker parameters have been recalibrated to enhance audio quality.

5. Upgraded to higher-quality components: a more sturdy telescopic antenna and a better-feeling, non-slip knob cap.

Brand: AMNVOLT

Model (Hardware Version): V4

Housing Material: CNC-machined metal

Main Controller: ESP-32-S3

Operating Modes: FM/AM/LSB/USB (Note: Does not support aeronautical bands)

Receiving Bands: HF/SW/MW/VHF

Frequency Range: LW, MW, SW (150kHz - 30MHz), VHF (64-108MHz)

Display: 1.9-inch, 170*320 resolution

Display Brightness: 32~255 levels, adjustable

Charging Port: TYPE-C (cannot be charged with fast chargers)

Audio Jack: 3.5mm 3-pin stereo

Antenna Connector: SMA-KE (female)

Battery Capacity: 800mAh

Housing Material: Metal (CNC-machined aluminum alloy)

Product Dimensions: Approx. 80x35x20mm / 3.15x1.38x0.79 inches

Note:

Due to different monitor settings and lighting conditions, the actual color of the item may vary slightly from the pictures. Thanks for your understanding!

Please allow a 1-2 cm difference in measurements due to manual measuring.