SPECIFICATIONS

Brand Name: DYKBmetered

Certification: NONE

DIY Supplies: Electrical

Data Record: NO

Digital Display SI4732 Receiver: Medium Wave Shortwave

ESP32S3 Radio Full Band SW LW AM FM Radio station Broadcasts: Adjustable volume portable radio station

Electronic: NO

High-concerned chemical: None

Model Number: Digital Display SI4732 Receiver

Origin: Mainland China

Output Voltage: type-c usb dc 5v

Size: Medium Wave Shortwave

Style: Adjustable volume portable radio station

Type: ESP32S3 Radio Full Band SW LW AM FM Radio station Broadcasts

0.5-108MHz Pocket-Size SI4732 Radio Receiver | ESP32-S3 DSP Receiver | Portable Shortwave Radio

Product Description
Ultra-compact digital radio receiver covering 0.5-108MHz frequency range with DSP processing. Featuring ESP32-S3 microcontroller and SI4732 chipset, this pocket-sized receiver offers AM/FM/LSB/USB reception with 1.9-inch IPS color display and built-in 800mAh battery. Perfect for portable listening, field operations, and radio enthusiasts seeking maximum functionality in minimal size.

Key Features

• Wide Frequency Coverage: 0.5-108MHz (LW/MW/SW/FM + SSB)

• Advanced DSP Processing: SI4732 chip for superior reception

• Compact Design: 73×32×12mm pocket-size dimensions

• High-Resolution Display: 1.9-inch IPS (170×320 pixels)

• Built-in Power: 800mAh rechargeable battery

• Portable Antenna: Included telescoping whip antenna

Technical Specifications

• Microcontroller: ESP32-S3 dual-core processor

• Receiver IC: Silicon Labs SI4732 DSP chip

• Frequency Ranges:

  • FM: 64-108MHz

  • AM: 520kHz-1710kHz

  • SW: 2.3MHz-26.1MHz

  • LW: 153kHz-279kHz

• Modes: FM, AM, LSB, USB (no air band support)

• Display: 1.9-inch IPS color LCD (170×320 resolution)

• Battery: Built-in 620mAh lithium polymer

• Charging: Type-C 5V (standard chargers only - NO fast charging)

• Audio Output: 3.5mm stereo headphone jack

• Antenna: Telescoping whip antenna included

• Enclosure: PETG 3D-printed case

• Dimensions: 73×32×12mm

Operation Guide

Main Interface Controls:

• Rotary Knob (Main Screen): Select frequency band

• Double Click Knob: Enter menu system

• Single Click: Confirm selection

Menu Navigation:

1. Enter Menu: Double click knob from main screen

2. Navigate: Rotate knob to browse menu options

3. Select: Click knob to confirm choice

4. Exit: Return to main screen from top-level menu

Audio Note:

• Low Headphone Volume: Due to compact size, no internal audio amplifier

• External Solution: Connect to powered speakers or external amplifier

• Line Output: Clean signal suitable for external amplification

Charging Instructions:

• Type-C Connection: Standard 5V charger only

• Critical Warning: DO NOT use fast chargers - will damage circuitry

• Charging Time: Approximately 2-3 hours from empty

Reception Tips:

• FM Reception: Extend telescoping antenna fully

• SW/LW Reception: Consider external long-wire antenna for weak signals

• SSB Reception: Fine-tune using tuning knob for clear audio

• Antenna Orientation: Rotate for optimal signal strength

Applications

• Portable shortwave listening

• Field radio monitoring

• Educational radio studies

• Emergency communications backup

• Travel and outdoor radio

• Ham radio band scanning

Package Includes

• SI4732 mini radio receiver

• antenna