Introduction
Thank you for choosing the PRUNUS J-139S Portable Vintage Radio. This multi-functional device combines classic radio reception with modern connectivity, offering FM, AM, and SW bands, Bluetooth 6.0, and versatile media playback via USB drive or TF card. Its compact design and multiple power options, including solar and USB-C charging, make it an ideal companion for both indoor and outdoor use. This manual will guide you through the setup, operation, and maintenance of your new radio.
1. Getting Started
1.1 Package Contents
- PRUNUS J-139S Portable Vintage Radio
- USB-C Charging Cable
- User Manual
1.2 Powering Your Radio
The PRUNUS J-139S radio offers three convenient power supply options:
- Built-in 1800mAh Rechargeable Battery: The radio comes with a pre-installed rechargeable battery.
- USB-C Charging: Connect the provided USB-C cable to the DC 5V port on the side of the radio and plug the other end into a standard USB power adapter (not included). The power indicator light will show charging status.
- Solar Charging: For eco-friendly power, place the radio with its solar panel facing direct sunlight. The solar panel will automatically charge the internal battery.
Figure 1: Three ways to power your PRUNUS J-139S radio.
1.3 Antenna Setup
For optimal radio reception, fully extend the 20-inch telescopic antenna located on the top of the radio.
Figure 2: Extend the 20-inch telescopic antenna for improved reception.
2. Operating Your Radio
2.1 Controls Overview
The PRUNUS J-139S features intuitive, easy-to-use controls:
Figure 3: Key controls of the PRUNUS J-139S radio.
- Vintage Power / Volume Knob: Located on the front, this knob turns the radio on/off and adjusts the volume.
- Sliding Band Switch: Located below the tuning display, this switch selects between MP3, FM, AM, and SW modes.
- Tuning Knob: Located on the right side of the front panel, this textured knob is used to fine-tune radio frequencies.
- Play/Pause, Previous/Next Track Buttons: Located on the top panel, these buttons control media playback in MP3/Bluetooth mode.
2.2 Turning On/Off and Volume Control
To turn the radio on or off, rotate the Vintage Power / Volume Knob clockwise or counter-clockwise until it clicks. Continue rotating to adjust the volume level.
Video 1: Demonstrating the Vintage Power / Volume Knob.
2.3 Radio Mode (FM/AM/SW)
- Slide the Band Selector to your desired band: FM, AM, or SW.
- Fully extend the telescopic antenna for the best signal reception.
- Rotate the Tuning Knob to scan for available radio stations. The frequency display will show the current tuning position.
Video 2: Using the Sliding Band Switch for radio modes.
Video 3: Adjusting the Textured Tuning Knob and observing the Frequency Display.
2.4 Bluetooth Playback
The radio features Bluetooth 6.0 for wireless audio streaming:
- Slide the Band Selector to the 'MP3' position. The radio will enter Bluetooth pairing mode.
- On your smartphone or other Bluetooth-enabled device, enable Bluetooth and search for available devices.
- Select