VKTECH HRD-700

Contents

HRD-700 Portable Full Band Radio and Music Player

Model: HRD-700 | Brand: VKTECH

1. Introduction

The HRD-700 is a versatile portable radio and music player designed for a wide range of listening experiences. It features full-band radio reception, including FM, Medium Wave (MW), Short Wave (SW), and the North American Weather Band (WB). Beyond radio, it offers Bluetooth 5.0 connectivity for wireless audio streaming and supports TF card playback for your personal music library. Its compact design and long-lasting battery make it an ideal companion for both indoor and outdoor use.

Front view of the HRD-700 radio
Figure 1: Front view of the HRD-700 portable radio.

2. Safety Information

  • Do not expose the device to extreme temperatures, direct sunlight, or high humidity.
  • Avoid dropping or subjecting the device to strong impacts.
  • Keep the device away from water and other liquids.
  • Do not attempt to disassemble or repair the device yourself. Refer all servicing to qualified personnel.
  • Use only the specified BL5C lithium battery and USB Type-C charging cable.

3. Package Contents

Please check the package for the following items:

  • 1 x HRD-700 Portable Multimedia Music Player
  • 1 x Lanyard
  • 1 x BL5C Lithium Battery (1000mAh 3.7V)
  • 1 x USB Type-C Charging Cable
  • 1 x Instruction Manual
  • 1 x Packing Box
Image displaying the package contents: radio, lanyard, BL5C battery, USB Type-C cable, and instruction manual.
Figure 2: Contents included in the HRD-700 package.

4. Product Overview

The HRD-700 is designed for portability and ease of use. It features a coding pulley switch for precise tuning and a clear display for station information. The device is equipped with a built-in speaker and supports various audio playback options.

Dimensions of the HRD-700 radio (88mm height, 53mm width).
Figure 3: HRD-700 dimensions (approximately 88mm x 53mm x 37mm).
Close-up of the radio's speaker component.
Figure 4: Detail of the integrated speaker for clear audio output.
Image showing the radio with a large battery icon, indicating high capacity.
Figure 5: The HRD-700 is powered by a high-capacity 1000mAh lithium battery for extended use.

5. Setup

5.1 Battery Installation and Charging

  1. Open the battery compartment cover on the back of the device.
  2. Insert the provided BL5C lithium battery, ensuring correct polarity.
  3. Close the battery compartment cover.
  4. Connect the USB Type-C charging cable to the radio's charging port and the other end to a 5V DC power source (e.g., USB wall adapter, computer USB port).
  5. The charging indicator will illuminate. Once fully charged, the indicator may change color or turn off.

5.2 Initial Power On

Press and hold the power button (usually located on the side or top) for a few seconds until the display illuminates.

6. Operating Instructions

6.1 Radio Mode

The HRD-700 supports FM, MW, SW, and WB bands.

  • Band Selection: Use the 'BAND' button or switch to cycle through FM, MW, SW, and WB bands.
  • Tuning:
    • Coding Pulley Switch: Rotate the tuning knob (coding pulley switch) to manually scan for stations. The display will show the frequency.
    • Automatic Search: Press and hold the 'SCAN' or 'AUTO' button to automatically search for and store available stations. The radio can store up to 110 stations (20 for FM, 20 for MW, 70 for SW).
    • Recalling Stored Stations: Use the number buttons (0-9) or dedicated 'PRESET' buttons to access stored stations.
  • MW Step Value: In MW mode, you can select between 9KHZ and 10KHZ step values. Refer to the settings menu to adjust this based on your region.
  • Backlight: The display backlight can be toggled on or off via the settings menu for power saving or improved visibility.

6.2 Bluetooth Connection

The device features Bluetooth 5.0 for wireless audio streaming.

  1. Switch the radio to Bluetooth mode (usually indicated by 'BT' on the display).
  2. On your smartphone or other Bluetooth device, enable Bluetooth and search for available devices.
  3. Select 'HRD-700' from the list of found devices to pair.
  4. Once paired, you can play audio from your device through the HRD-700. The stable connection range is up to 10 meters.
Diagram illustrating Bluetooth connection between the radio and a smartphone.
Figure 6: Establishing a wireless Bluetooth connection with the HRD-700.

6.3 TF Card Playback

The HRD-700 supports music playback from a TF (MicroSD) card up to 256GB.

  1. Insert a TF card with MP3, WAV, or WMA audio files into the TF card slot.
  2. Switch the device to TF card playback mode (usually indicated by 'TF' or a card icon).
  3. Use the playback controls (play/pause, next/previous track) to manage your music.

6.4 Audio EQ Settings

In Bluetooth and TF card playback modes, you can select from six audio equalizer (EQ) settings:

  • Normal (NORMAL)
  • Popular music (POP)
  • Rock music (ROCK)
  • Jazz music (JAZZ)
  • Classical Music (CLASSIC)
  • Country (COUNTRY)

Use the 'EQ' button to cycle through these settings.

6.5 Sleep Timer

The sleep timer allows you to set a duration after which the radio will automatically turn off.

  • Access the sleep timer setting in the menu.
  • Select a duration: 70, 60, 50, 40, 30, 20, or 10 minutes.
  • The radio will automatically power off after the selected time.

7. Maintenance

7.1 Cleaning

Wipe the device with a soft, dry cloth. Do not use abrasive cleaners or solvents.

7.2 Battery Care

To prolong battery life, avoid fully discharging the battery frequently. If the device will not be used for an extended period, charge it to about 50% and store it in a cool, dry place. The removable BL5C battery allows for easy replacement if needed.

8. Troubleshooting

  • No Power: Ensure the battery is correctly installed and charged. Connect the charger to verify if the charging indicator lights up.
  • Poor Radio Reception: Extend the telescopic antenna fully. Try repositioning the radio or moving to an open area. For MW, rotating the radio may improve reception.
  • Bluetooth Pairing Issues: Ensure the radio is in Bluetooth mode and discoverable. Make sure your external device's Bluetooth is on and within 10 meters. Try unpairing and re-pairing if issues persist.
  • TF Card Not Playing: Ensure the TF card is inserted correctly and contains supported audio formats (MP3, WAV, WMA). Check if the card capacity exceeds 256GB.
  • No Sound: Check the volume level. Ensure the correct mode (Radio, Bluetooth, TF) is selected.

9. Specifications

FeatureSpecification
Receiving Range (MW)522-1620KHZ (9KH step) / 520-1710KHZ (10KHZ step)
Receiving Range (FM)87-108MHZ
Receiving Range (SW)5.70-17.90MHZ
Receiving Range (WB)162.400-162.550MHZ
Receiving Sensitivity (FM)≤8dB
Receiving Sensitivity (MW)≤86dB
Receiving Sensitivity (SW)≤32dB
Quiescent Current≤60uA
Maximum Current<650MA
Speaker40mm / 4Ω / 3W
Signal-to-Noise Ratio (FM)≥40dB
Signal-to-Noise Ratio (MW)≥30dB
Signal-to-Noise Ratio (SW)≥40dB
Radio Mode Storage110 stations (FM 20, MW 20, SW 70)
Bluetooth VersionVER 5.0
Bluetooth Receiving Distance≤10 meters
Minimum Operating Voltage3.4V
External Input VoltageDC 5V
Lithium BatteryBL5C, 3.7V 1000mAh
TF Card Playback FormatMP3, WAV, WMA
TF Card Maximum Capacity256G
Product Dimensions (WxHxD)88 x 53 x 37 mm (approx. 3.46 x 2.09 x 1.46 inches)
Product Weight~100g
Packing Weight~230g

10. User Tips

  • For optimal radio reception, especially for SW and WB bands, extend the antenna fully and try to use the radio outdoors or near a window.
  • When using Bluetooth, ensure there are no major obstructions between the radio and your paired device to maintain a stable connection.
  • Experiment with the different audio EQ settings to find the best sound profile for your music genre.

11. Warranty and Support

For warranty information and technical support, please refer to the seller's policies or contact the point of purchase. Keep your proof of purchase for any warranty claims.

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