The DPR-34+ is a portable digital radio (DAB+) with FM capabilities, designed for personal listening and convenience. It features a built-in rechargeable Lithium battery, a clear LCD display, and a compact design.
Function Description:
The DPR-34+ primarily functions as a DAB+ and FM radio. It allows users to scan for and tune into available digital and analog radio stations. The device is equipped with a telescopic antenna for optimal signal reception.
For DAB+ listening, the radio performs an initial scan of the entire DAB+ channel range upon first use or when initiated through the "Find Services" menu. It then displays a list of found stations, allowing the user to select their desired station using a jog wheel. The radio automatically tunes to the selected station and displays its name. While listening to DAB+, the user can access various service information by repeatedly pressing the jog wheel, including Program Type (PTY), Multiplex Name, Time, Date, Channel and Frequency, Bit Rate and Codec, and Signal Strength.
For FM listening, the radio can be switched to FM mode via the menu. It supports both searching tuning and manual tuning. In searching tuning, the radio scans upwards or downwards until it finds a station with sufficient signal strength. Manual tuning allows the user to change the frequency in 50 kHz increments to find a desired station. Similar to DAB+, when listening to an FM station with RDS broadcasting, the user can cycle through Radio Text information such as Pty, Audio Type, Time, Date, and Frequency by pressing the jog wheel.
The DPR-34+ includes a "Favorites" menu, which allows users to store and recall up to 10 favorite stations for both DAB+ and FM bands. To store a station, the user tunes to the desired station, accesses the Favorites menu, selects "Preset Store," and then chooses a preset number (1-10). Stored stations can be overwritten. To recall a station, the user navigates to "Preset Recall" in the Favorites menu and selects the desired preset.
The device also incorporates several user-configurable settings accessible through the "Settings" menu. These include:
- Auto select: Allows the radio to automatically select and tune to a station within a few seconds.
- SW version: Displays the software version installed on the radio.
- Factory reset: Erases all saved settings, station lists, and favorites, reverting the radio to its factory default state.
- Set contrast: Adjusts the LCD display contrast.
- Set backlight: Configures the display backlight. Users can choose "Backlight Auto" to have the backlight shut off after 12 seconds of inactivity, or "NO" to keep it continuously on.
- DRC (Dynamic Range Control): This feature, applicable only in DAB+ band, makes quieter sounds easier to hear in noisy environments. Users can select "DRC off" (broadcast DRC ignored), "DRC low" (DRC level set to 1/2 of broadcast), or "DRC high" (DRC set as broadcast).
- Service Information (FM): Provides Radio Text, Back, Date, Time, Audio Type, and Program Type information (subject to radio station RDS service availability).
- Sleep: Allows setting an auto shut-off timer (e.g., 90 min, 60 min, 45 min) after which the radio will turn off.
A key lock function is provided to prevent unintentional operation. When activated, the power and volume control buttons are disabled, and the display shows "Key Locked."
Important Technical Specifications:
- Power Requirement:
- Mains: AC 100-240V 50/60 Hz (via supplied 5V/500 mA AC adaptor)
- Batteries: 3.7V/1850 mAH Lithium rechargeable battery
- Battery Life:
- Approximately 15 hours listening through the speaker (4 hours a day at normal volume).
- Approximately 18 hours listening with headphones (4 hours a day at normal volume).
- Frequency Coverage:
- FM: 87.50 – 108 MHz
- DAB+ Band III: 5A – 13F
- Circuit Features:
- Headphones: 32 ohm, in-ear style
- Output Power: 5mW (headphone), 150 mW (speaker)
- Speaker: 32 ohm, 36 mm diameter.
Usage Features:
- Controls: The device features a headphone socket, lock switch, telescopic antenna, power button, volume control, LCD display, loudspeaker, tuning/menu jog wheel, and DC socket.
- Charging: The built-in 1800mAH Lithium rechargeable battery is charged via a 5V/500 mA AC adaptor. Charging time is approximately 4 hours with the radio off and 10 hours with the radio on. A flashing battery icon on the LCD indicates charging, which stops flashing when fully charged.
- Headphones: A 3.5 mm stereo headphone socket is provided. Connecting headphones automatically mutes the built-in speaker.
- Clock Setting: The clock automatically updates when tuned to a DAB+ station or an FM station broadcasting time via RDS.
- Menu Navigation: The jog wheel is central to menu navigation, allowing users to scroll through options and select them by pressing the wheel.
- Audio Setting (FM): Users can select "Stereo allowed" for FM stereo broadcasts or "Forced mono" to improve reception of weak FM signals.
Maintenance Features:
- Cleaning: The device should only be cleaned with a dry cloth.
- Safety Instructions: The manual emphasizes important safety instructions, including not using the apparatus near water, ensuring proper ventilation, avoiding heat sources, using specified attachments/accessories, protecting the power cord, and referring all servicing to qualified personnel.
- Environmental Considerations: The manual advises against exposing the unit to water, steam, sand, or other environmental hazards, and not leaving it in places with excessive heat (e.g., a parked car).
- Recycling: The manual includes a WEEE directive symbol, indicating that waste electrical products should not be disposed of with household waste and should be recycled where facilities exist.
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