Introduction
Welcome to the instruction manual for your PRUNUS J-711 Portable AM/FM/SW Shortwave Radio. This compact and versatile radio is designed to provide reliable access to various radio bands, featuring dual power options, excellent reception, and user-friendly controls. Please read this manual thoroughly to ensure proper setup, operation, and maintenance of your device.
Product Overview
Components and Controls
Familiarize yourself with the various parts and controls of your PRUNUS J-711 radio:
- Telescopic Antenna: Extendable antenna for improved signal reception.
- Speaker: Integrated speaker for audio output.
- Tuning Knob: Used to select desired radio frequencies.
- Power/Volume Knob: Turns the radio on/off and adjusts the audio volume.
- Band Selector Switch: Toggles between FM, AM, and Shortwave (SW1-SW7) bands.
- Frequency Display: Analog display showing the current tuned frequency.
- Power Indicator: Light indicating the radio is powered on.
- Charging Indicator: Light indicating the battery is charging.
- 3.5mm Earphone Jack: For private listening with headphones.
- USB-C Charging Port: For recharging the built-in battery.
- Battery Compartment: Houses the optional AA batteries.
- Fold-out Stand: For convenient upright placement.
- Wrist Strap: For easy carrying and portability.
Figure 1: Front and side view of the PRUNUS J-711 radio highlighting the tuning knob, power/volume knob, and band selector for easy operation.
Setup
Powering the Device
The PRUNUS J-711 radio offers flexible power options:
- Built-in Rechargeable Battery: The radio comes with a 1200mAh rechargeable battery. Connect the included USB-C charging cable to the USB-C port on the radio and a compatible USB power adapter (not included) to charge. The charging indicator light will illuminate during charging.
- AA Battery Operation: For extended use or when a power outlet is unavailable, insert 2 AA batteries (not included) into the battery compartment located on the back of the radio. Ensure correct polarity (+/-) when inserting batteries.
Figure 2: The PRUNUS J-711 radio demonstrating its dual power options: inserting 2 AA batteries into the rear compartment and connecting a USB-C cable for charging the internal battery.
Antenna
For optimal reception, especially for FM and Shortwave bands, fully extend the telescopic antenna. For AM reception, the radio utilizes a built-in ferrite bar antenna, so antenna extension is not typically required.
Figure 3: The PRUNUS J-711 radio with its 16.5-inch telescopic antenna fully extended, illustrating its capability for excellent signal reception across various bands.
Operating Instructions
Turning On/Off and Volume Control
To turn the radio on, rotate the Power/Volume knob clockwise. Continue rotating to increase the volume. To turn off the radio, rotate the knob counter-clockwise until it clicks.
Selecting Radio Bands
Use the Band Selector switch on the side of the radio to choose your desired frequency band: FM (87-108 MHz), AM (520-1730 kHz), or Shortwave (SW1-SW7, 5.5-18 MHz).
Tuning Stations
Once a band is selected, slowly rotate the Tuning Knob to scan through frequencies. The frequency display will indicate the current station. Adjust the antenna position for the best possible reception.
Using the Earphone Jack
For private listening, plug any standard 3.5mm earphones (not included) into the earphone jack located on the side of the radio. The internal speaker will automatically mute when earphones are connected.
Figure 4: A person enjoying clear audio from the PRUNUS J-711 radio using headphones plugged into the 3.5mm earphone jack, allowing for private listening.
Key Features
- Dual Power Supply: Operates on a built-in 1200mAh rechargeable battery (USB-C charging) or 2 AA batteries (not included), providing flexibility for various situations.
- Excellent Reception: Covers FM (87-108 MHz), AM (520-1730 kHz), and Shortwave (SW1-SW7, 5.5-18 MHz) bands. Equipped with a 16.5-inch long telescopic antenna and a smart DSP chip for stronger, clearer signals.
- User-Friendly Design: Features large, easy-to-grip knobs for power, tuning, and volume, making it simple to operate for all ages. Includes a convenient fold-out stand.
- Clear Audio Output: Despite its compact size, the radio delivers clear and rich sound. A 3.5mm headphone jack allows for private listening without disturbing others.
- Compact and Portable: Measuring just 4.7 x 2.9 x 1.3 inches and weighing 5oz, it easily fits into a bag or pocket. A wrist strap is included for convenient carrying.
Figure 5: The PRUNUS J-711 radio held in hand, illustrating its compact dimensions (4.7 x 2.9 x 1.3 inches) and lightweight design (5oz) for ultimate portability.
Maintenance
- Cleaning: Use a soft, dry cloth to clean the radio's exterior. Avoid using harsh chemicals or abrasive cleaners.
- Battery Care: If using AA batteries, remove them if the radio will not be used for an extended period to prevent leakage. For the built-in rechargeable battery, charge it regularly to maintain battery health.
- Storage: Store the radio in a cool, dry place away from direct sunlight and extreme temperatures.
Troubleshooting
- No Power: Ensure the Power/Volume knob is turned on. If using AA batteries, check if they are inserted correctly and are not depleted. If using the built-in battery, ensure it is charged.
- Poor Reception: Fully extend the telescopic antenna. Try repositioning the radio or rotating it to find a stronger signal. For AM, try rotating the radio itself.
- No Sound: Check the volume level. If earphones are plugged in, ensure they are fully inserted and functioning correctly.
Specifications
| Feature | Detail |
|---|---|
| Model Number | J-711 |
| Product Dimensions | 4.7 x 2.9 x 1.3 inches |
| Item Weight | 5 ounces |
| Radio Bands Supported | FM (87-108 MHz), AM (520-1730 kHz), SW1-SW7 (5.5-18 MHz) |
| Power Source | Built-in 1200mAh Rechargeable Battery (USB-C), 2 x AA Batteries (not included) |
| Connectivity Technology | USB |
| Special Feature | Lightweight, Portable, Rechargeable |
What's in the Box
- PRUNUS J-711 Radio
- USB-C Charging Cord
- Lanyard
- Owner's Manual
- Quick Start Guide
Official Product Video
Video 1: An overview of the PRUNUS Mini Radio, highlighting its AM/FM/Shortwave capabilities and portable design. This video demonstrates key features and ease of use.
Warranty and Support
Your PRUNUS J-711 radio comes with a manufacturer's warranty. For detailed warranty information, technical support, or any inquiries, please refer to the contact information provided in the included Owner's Manual or visit the official PRUNUS website.
