VISLONE ATS-20+ SI4735 Full Waveband Radio Receiver User Manual

Introduction

The VISLONE ATS-20+ SI4735 is a versatile full waveband radio receiver designed for both commercial and amateur radio enthusiasts. It supports Frequency Modulation (FM), Amplitude Modulation (AM, including MW and SW), and Single Sideband (SSB, including LSB and USB) across a wide range of frequencies. This manual provides essential information for setting up, operating, and maintaining your device.

Key features include a 0.96-inch OLED display, a built-in 800mAh polymer lithium battery, USB Type-C recharging, and audio output options for both earphones and an external speaker.

Package Contents

Before proceeding with setup, please ensure all items are present in the package:

• 1 x ATS-20+ Radio Receiver
• 1 x Antenna
• 1 x Type-C Cable

Setup

1. Charging the Battery

The ATS-20+ receiver is powered by a built-in 3.6V, 800mAh polymer lithium battery. Before first use, it is recommended to fully charge the device.

1. Connect the supplied Type-C cable to the USB Type-C port on the back of the receiver.
2. Connect the other end of the Type-C cable to a compatible USB power source (e.g., computer USB port, USB wall adapter).
3. The "POWER charge led" indicator will illuminate during charging. Charging is complete when the indicator changes color or turns off (refer to device for specific behavior).

2. Connecting the Antenna

For optimal reception, connect the included antenna to the receiver.

• Locate the BNC antenna connector on the back of the ATS-20+ receiver.
• Attach the supplied antenna to this connector by aligning the pins and twisting to secure.
• For improved reception on High Frequency (HF) bands, consider using a purpose-built external antenna. The antenna interface uses an SMA interface internally, allowing for advanced modifications if desired.

Image: Rear view of the ATS-20+ receiver, highlighting the antenna connector and other ports.

3. Powering On/Off

To power on the device, press and hold the power button (location not specified in provided data, assume standard power button). To power off, press and hold the power button again.

Operating Instructions

1. Display Overview

The ATS-20+ features a 0.96-inch OLED display that provides essential information during operation.

Image: Front view of the ATS-20+ receiver, displaying frequency, AGC status, and MONO mode.

The display shows:

• Current frequency and modulation band (FM, AM, SW, SSB).
• AGC (Automatic Gain Control) status (on/off).
• MONO/STEREO indicator (for FM).
• Other operational parameters as configured.

2. Band Selection and Tuning

The receiver supports a wide range of bands, including FM, AM (MW & SW), and SSB (LSB & USB). It comes with 22 pre-configured commercial and amateur radio bands.

• Use the BAND buttons (BAND+ / BAND-) to cycle through available frequency bands.
• Use the TUNE knob to adjust the frequency within the selected band. Turning the knob clockwise increases the frequency, and counter-clockwise decreases it.
• The STEP button may allow adjustment of tuning step size for fine-tuning.
• For SSB reception, use the BFO/ATS control to fine-tune the signal for clear voice reception.

3. Volume Control

Adjust the audio output level using the VOL+ and VOL- buttons.

4. Audio Output

The ATS-20+ offers two audio output options:

• Internal Speaker: The device has an integrated 8ohm speaker with 1.5W output.
• Earphone Jack: For private listening, connect standard 3.5mm earphones to the "head phone" jack on the back of the unit.

5. Auto Setting Hold Function

The receiver supports an auto setting hold function, meaning it will remember the last frequency and settings used even after being powered off and on.

Maintenance

1. Cleaning

To clean the device, use a soft, dry cloth. Do not use liquid cleaners or abrasive materials, as these can damage the finish or internal components.

2. Battery Care

To prolong the life of the built-in lithium battery:

• Avoid fully discharging the battery frequently.
• Store the device in a cool, dry place when not in use for extended periods.
• Recharge the battery periodically if stored for a long time to prevent deep discharge.

Troubleshooting

• No Power: Ensure the battery is charged. Connect the Type-C cable and allow it to charge for at least 30 minutes before attempting to power on again.
• Poor Reception:
  • Check if the antenna is securely connected.
  • Ensure the antenna is fully extended or positioned for optimal signal.
  • Move away from sources of electronic interference (e.g., computers, fluorescent lights).
  • For shortwave bands, an external antenna may significantly improve performance.
• Display Issues / Unexpected Behavior: The device features a "USB Download" port for firmware upgrades. If you experience display issues or wish to enhance functionality, consider updating the firmware. Information on firmware updates, such as the ATS_EX firmware, can often be found in online communities or from the manufacturer's support resources. This process typically requires knowledge of firmware file handling.
• No Audio: Check the volume level. If using earphones, ensure they are fully plugged into the 3.5mm jack.

Specifications

Official Product Video

Warranty Information

Specific warranty details for the VISLONE ATS-20+ SI4735 are not provided in the product information. Please refer to the retailer's return policy or contact VISLONE customer support for warranty terms and conditions.

Customer Support

For further assistance, technical support, or inquiries regarding your VISLONE ATS-20+ SI4735 radio receiver, please contact the manufacturer, Vislone, or the retailer from whom you purchased the product.

You may also visit the official VISLONE store on Amazon for additional product information and support resources: VISLONE Store