K-603 Portable Digital Radio User Manual

1. Introduction

The Elistooop K-603 Portable Digital Radio is a versatile device offering FM, AM, and SW radio reception, Bluetooth connectivity, and MP3/WMA playback via TF card. It features a clear LCD display, power-off memory, and a built-in rechargeable battery, making it ideal for portable use. This manual provides detailed instructions for setting up, operating, and maintaining your K-603 radio.

2. Product Overview

2.1 Key Features

• Portable design with a support frame and wrist strap.
• Built-in 1000mAh BL-5C detachable lithium battery for extended use.
• Stable FM, AM, and SW reception with intuitive digital keyboard tuning.
• Power-off memory function.
• Dot matrix LCD digital display (43x22mm) showing radio frequency, band, song title, time, battery status, and volume.
• Automatic and manual channel search and storage, supporting up to 440 stations (80 FM, 60 AM, 300 SW).
• Adjustable automatic shutdown timer (0-90 minutes).
• Adjustable backlight time and brightness.
• Bluetooth 5.0 for wireless music streaming (up to 10 meters).
• TF card support for MP3/WMA playback (up to 32GB) with memory resume and selectable loop modes/sound effects.
• 3.5mm audio input for external audio sources.
• Recording function with playback and deletion capabilities.
• Multi-language display support (Chinese, English, Spanish).
• User-adjustable medium wave step value (9KHz/10KHz).

2.2 Components and Controls

3. Setup

3.1 Battery Installation

1. Locate the battery compartment on the back of the radio (refer to Figure 4).
2. Slide the battery cover open.
3. Insert the BL-5C 1000mAh 3.7V lithium battery, ensuring the correct polarity.
4. Close the battery cover securely.

3.2 Charging the Battery

Connect the provided Micro USB cable to the Micro USB-5P charging port on the side of the radio (refer to Figure 3) and the other end to a DC 5V power source (e.g., a USB wall adapter or computer USB port). The battery indicator on the LCD will show charging status.

3.3 Initial Power On and Language Selection

1. Press and hold the 'POWER' button to turn on the radio.
2. Upon first use, or after a reset, you may be prompted to select a language. Use the navigation buttons to choose between Chinese, English, or Spanish, and confirm your selection.

4. Operating Instructions

4.1 Power On/Off

Press and hold the 'POWER' button to turn the device on or off.

4.2 Radio Mode (FM/AM/SW)

1. Select Band: Press the 'FM/AM' or 'SW' buttons to switch between frequency bands.
2. Automatic Search and Storage: In radio mode, press and hold the 'SCAN' button (if available, or a similar function) to automatically search for and store available stations.
3. Manual Tuning: Use the 'TUNE +/-' buttons (or similar navigation) to manually adjust the frequency.
4. Digital Channel Selection: Use the numeric keypad (0-9) to directly enter a desired frequency.
5. Storing Channels: After tuning to a station, press the 'MEMO' button to save it. Follow on-screen prompts to select a memory slot.
6. Recalling Stored Channels: Press the 'MEMO' button and then use the numeric keypad or navigation buttons to select a stored channel.
7. Medium Wave Step Value: Access the 'MENU' settings to adjust the medium wave step value between 9KHz and 10KHz, if needed for your region.

4.3 Bluetooth Mode

1. Activate Bluetooth: Press the 'MODE' button until 'BT' or 'Bluetooth' appears on the display. The radio will enter pairing mode.
2. Pairing: On your external device (e.g., smartphone, tablet), enable Bluetooth and search for available devices. Select 'K-603' from the list to pair.
3. Music Playback: Once paired, you can stream audio from your device to the K-603 radio. The effective range is approximately 10 meters.

4.4 TF Card Playback

1. Insert TF Card: Gently insert a TF (MicroSD) card into the 'TF Card' slot on the side of the radio (refer to Figure 3). Ensure the card is formatted with MP3 or WMA audio files.
2. Select Mode: Press the 'MODE' button until 'TF' or 'Card' appears on the display.
3. Playback Controls: Use the playback buttons (Play/Pause, Next/Previous Track) to control music.
4. Loop Modes: Access the 'MENU' to select between 'single loop' (repeats current track) or 'all loop' (repeats all tracks).
5. Sound Effects: The 'MENU' also allows selection from seven different sound quality effects.

4.5 Audio Input (Line In)

Connect an external audio source (e.g., an MP3 player or smartphone) to the 'Line In' port using a 3.5mm audio cable (refer to Figure 3). The radio will automatically switch to Line In mode or require manual selection via the 'MODE' button.

4.6 Recording Function

1. Start Recording: In radio or Line In mode, press the 'REC' button to begin recording.
2. Stop Recording: Press 'REC' again to stop and save the recording.
3. Play Recording: Access the 'MENU' or a dedicated 'REC FILF' button to browse and play recorded files.
4. Delete Recording: Select a recorded file and press the 'DEL' button to delete it.

4.7 Volume Adjustment

Use the 'VOLUME' up and down buttons to adjust the audio output level.

4.8 Automatic Shutdown

Access the 'MENU' settings to set an automatic shutdown timer. Options typically range from 0 to 90 minutes (0-10-20-30-40-50-60-70-80-90 minutes).

4.9 Backlight Settings

In the 'MENU', you can adjust the backlight lighting time and dimming degree for the LCD display.

4.10 Lock/Mute Function

The radio is equipped with lock and mute functions. Refer to the on-screen display for their status and corresponding buttons (often combined with other controls or accessible via 'MENU').

5. Maintenance

• Cleaning: Use a soft, dry cloth to clean the radio's exterior. Avoid using harsh chemicals or abrasive cleaners.
• Battery Care: If the radio will not be used for an extended period, remove the BL-5C battery to prevent leakage. Recharge the battery regularly to maintain its lifespan.
• Storage: Store the radio in a cool, dry place away from direct sunlight and extreme temperatures.
• Antenna: Handle the telescopic antenna gently to prevent bending or breaking.

6. Troubleshooting

6.1 No Power / Radio Not Turning On

• Ensure the BL-5C battery is correctly installed and charged.
• Connect the radio to a DC 5V power source via the Micro USB port to check if it powers on.

6.2 Poor Radio Reception

• Fully extend the telescopic antenna (refer to Figure 2).
• Try repositioning the radio to a different location, especially near a window, to improve signal strength.
• For SW bands, external conditions and time of day can significantly affect reception.

6.3 Bluetooth Connection Issues

• Ensure the radio is in Bluetooth pairing mode.
• Check that your external device's Bluetooth is enabled and within the 10-meter range.
• Try unpairing and re-pairing the devices.

6.4 TF Card Not Playing

• Ensure the TF card is inserted correctly.
• Verify that the audio files on the card are in MP3 or WMA format.
• Check that the TF card capacity does not exceed 32GB.
• Try reformatting the TF card (this will erase all data).

6.5 Display Not Visible / Dim

• Adjust the backlight brightness and time settings in the 'MENU'.
• Ensure the battery has sufficient charge.

7. Specifications

8. User Tips

• Optimize Reception: For the best radio reception, especially on FM and SW bands, fully extend the telescopic antenna and try different orientations or locations.
• Battery Longevity: To maximize battery life, consider using the automatic shutdown function when listening for extended periods.
• Charging Cable: While not explicitly listed, a Micro USB charging cable is typically included for convenient charging.
• Language Settings: If the display language is unfamiliar, navigate to the 'MENU' settings to switch to your preferred language (Chinese, English, or Spanish).

9. Warranty and Support

For warranty information, technical support, or service inquiries, please refer to the seller's policies or contact the point of purchase. Keep your purchase receipt as proof of purchase.