1. Introduction
The ATS MINI Pocket SI4732 DSP Radio is a compact, full-band receiver designed for enthusiasts and casual listeners alike. Powered by an ESP32-S3 main control unit and featuring a SI4732 DSP chip, this radio offers reception across SW, LW, AM, FM, and SSB modes. Its 1.9-inch IPS HD color screen provides a clear display, and the built-in 800mAh battery ensures extended listening pleasure. The robust PETG 3D printed casing (or ABS) makes it durable for both indoor and outdoor use.
2. Package Contents
- 1 x ATS MINI Pocket SI4732 DSP Radio
- 1 x Telescopic Antenna
- 1 x USB Type-C Charging Cable (not explicitly listed but implied by Type-C interface)
3. Setup
3.1 Initial Charging
Before first use, fully charge the radio. Connect a standard USB Type-C charging cable to the Type-C port on the side of the radio and to a compatible USB power source (e.g., computer USB port, wall adapter). The radio features an 800mAh battery, providing over 10 hours of continuous playtime when fully charged. Note that fast charging is not supported.
3.2 Antenna Connection
For optimal reception, especially on SW, LW, AM, and SSB bands, connect the provided telescopic antenna to the SMA connector on the radio. Extend the antenna fully for better signal acquisition. For FM and VHF bands, the telescopic antenna is generally sufficient.
4. Operating Instructions
4.1 Power On/Off
Locate the power button (typically integrated with the rotary knob or a separate button). Press and hold to power the device on or off.
4.2 Band Selection
The radio supports multiple bands: HF (High Frequency), SW (Shortwave), MW (Medium Wave), LW (Longwave), VHF (Very High Frequency), AM (Amplitude Modulation), FM (Frequency Modulation), LSB (Lower Sideband), and USB (Upper Sideband). Use the controls (buttons or menu options) to cycle through or select the desired band and modulation mode.
4.3 Tuning
Use the rotary knob to tune to the desired frequency. The 1.9-inch IPS HD color screen will display the current frequency, band, mode, and signal strength. The tuning step can usually be adjusted via menu settings for fine or coarse tuning.
4.4 Audio Output
The radio features a built-in speaker for direct audio playback. For private listening, connect 3.5mm stereo headphones to the audio interface port.
5. Maintenance
5.1 Cleaning
Wipe the radio with a soft, dry cloth. Do not use liquid cleaners or solvents, as they may damage the casing or internal components.
5.2 Battery Care
To prolong battery life, avoid fully discharging the battery frequently. If storing the radio for an extended period, charge it to approximately 50% and recharge every few months.
5.3 Storage
Store the radio in a cool, dry place away from direct sunlight, extreme temperatures, and high humidity.
6. Troubleshooting
- Radio does not power on: Ensure the battery is charged. Connect the radio to a power source using the Type-C cable and attempt to power on again.
- Poor reception: Extend the telescopic antenna fully. Try repositioning the radio or moving to an open area away from interference sources (e.g., computers, fluorescent lights).
- No audio: Check the volume level. If using headphones, ensure they are properly plugged into the 3.5mm audio jack.
- Screen is blank or unresponsive: Try restarting the radio. If the issue persists, ensure the battery is charged.
7. Specifications
| Feature | Specification |
|---|---|
| Main Control Unit | ESP-32-S3 |
| DSP Chip | SI4732 |
| Receiving Frequency Bands | HF, SW, MW, LW, VHF (9.9KHz to 108MHz) |
| Modulation Modes | LSB, USB, AM, FM |
| Screen | 1.9-inch IPS HD Color Screen (170*320 resolution) |
| Charging Interface | USB Type-C (fast charging not available) |
| Audio Interface | 3.5mm Three-band Stereo Jack |
| Battery Capacity | 800mAh (built-in) |
| Battery Life | Over 10 hours (continuous playtime) |
| Casing Material | ABS (or PETG 3D printed) |
| Product Dimensions | 73.00 x 32.00 x 12.00 mm (2.87 x 1.26 x 0.47 inches) |
| Gain | 10 dB |
8. User Tips
- Built-in Speaker: The radio includes an integrated speaker for convenient listening without external devices.
- Antenna Included: A telescopic antenna is provided in the package for immediate use.
- CB27 Band Coverage: The radio's HF band reception includes the 27 MHz range, covering the CB27 band.
- Airband Support: The radio supports VHF reception up to 108 MHz, which covers a portion of the Airband frequencies, and supports AM modulation for these bands.
- AM Tuning Step: The tuning step for AM mode can typically be adjusted in the radio's settings menu to suit regional broadcasting standards or specific listening preferences.
9. Warranty and Support
For any technical assistance, warranty claims, or support inquiries, please contact the seller or manufacturer directly. Keep your purchase records for reference.
