HanRongDa HRD-757 Radio APP Operating Instructions

Introduction

This document provides operating instructions for the HanRongDa HRD-757 radio, focusing on its control via the dedicated mobile application, 'Radio-CT'. The HRD-757 is a versatile FM/MW/SW/AIR/U.VHF/WB receiver and multimedia player with recording capabilities.

Getting Started: App Download and Installation

To control your HRD-757 radio via your smartphone, follow these steps:

1. Power On Radio: Ensure your HRD-757 radio is turned on.
2. Enable Location: Turn on the location services on your mobile phone.
3. Download the 'Radio-CT' App:
   • For Android/Harmony OS: Open your mobile browser, scan the provided QR code [QR Code], and follow the prompts to download the app software.
   • For iPhone: Go to the App Store, search for "Radio-CT", and download the application. Alternatively, scan the provided QR code [QR Code] to access the App Store interface for downloading.
4. Install the App: Follow the on-screen instructions. Typically, this involves clicking "download", then "continue", completing the installation, and finally clicking "open the app". The app icon will then be displayed on your mobile device's desktop.

Connecting the Radio to the App

1. Tap the 'Radio-CT' app icon on your mobile device's desktop to launch it.
2. Navigate within the app interface. Click the symbol located at the right corner of the app screen.
3. Click the symbol at the right button again.
4. Select "HRD-HRD-757-BLE" from the list of available Bluetooth devices.
5. Grant Bluetooth permission when prompted by your phone (e.g., click "Allow" [Allow]).
6. The connection will be established, indicated by a "Connected successfully" message.

App Interface and Key Functions

The app provides control over various radio functions. Key display elements include:

• Demodulation: Displays the demodulation mode (e.g., MONO/ST).
• Bandwidth: Shows the selected bandwidth.
• SNR: Signal to Noise Ratio display.
• RSSI: Signal Strength display.
• VOL: Volume Level indication.
• Band: Displays the current radio band (FM, AM, SW, AIR, WB, VHF).
• Frequency Display: Shows the current radio frequency and working mode.
• EQ: Displays the selected Equalizer setting (e.g., CONTRY).

Key operational buttons and their functions:

• MEMO (Preset):
  • Short Press: Enters "Present" constant display mode, allowing selection of stored stations. Use number keys to select a station and press [ENTER] for confirmation.
  • Long Press: Enters manual station storage mode. Find the desired frequency, long press [MEMO], select a storage number (or input directly), and press [MEMO] again to save.
• MUSIC:
  • Toggles between music playback modes: TF Card, Bluetooth, or 3.5mm Audio input (AUX).
  • In music play mode, tap the interface symbol to select EQ sound effects: NORMAL, POP, ROCK, JAZZ, CLASSIC, COUNTRY.
  • In TF card play mode, select the play order: Repeat All (rA), Repeat One (rO), Repeat Folder (rF), Random Play (rr).
• METE: Used for FM adjustment, allowing selection of demodulation mode (MONO/ST).
• SCAN:
  • In FM/SW/AIR/UHF bands, it allows selection of metric wave for frequency.
  • Long Press (in AM, SW, AIR, WB, VHF modes): Initiates fully automatic searching and storage of stations.
  • Long Press (in WB mode): Activates weather alert function (displays "ALERT"). Pressing again exits the alert.
• VOL +/-: Adjusts the volume level.
• BAND: Short press to cycle through different wave bands (FM, AM, SW, AIR, WB, VHF).
• Power (24-1): Short press to turn the device on/off. Long press can initiate alarm mode or open mode setup.
• SOS (25): Long press activates SOS alert and torch. Short press exits the alert.
• LOCK (26): Long press locks/unlocks the device buttons.
• Time Service (28): Allows device calibration to synchronize time with the mobile phone.
• REC (30): Insert a TF card to enter recording mode. Tap again to exit.
• Demodulation (31): Displays the current demodulation mode.
• EQ (32): Displays the EQ setting or working mode status (e.g., EQ, SQ, ON/OFF for AIR mode).

FCC Compliance Information

This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation.

Key Points:

• The equipment generates, uses, and can radiate radio frequency energy.
• If interference occurs, users are encouraged to try correcting it by:
  • Reorienting or relocating the receiving antenna.
  • Increasing separation between the equipment and receiver.
  • Connecting the equipment to a different circuit.
  • Consulting a dealer or technician.
• Any modifications not explicitly approved by the manufacturer may void the user's authority to operate the equipment.
• Operation is subject to two conditions: (1) the device may not cause harmful interference, and (2) it must accept any interference received.
• This equipment complies with FCC radiation exposure limits for an uncontrolled environment and should be installed and operated with a minimum distance from the radiator and the body.