Entel DR482 UHF digital/analogue mixed-mode repeater – 25W DMR/FM
The Entel DR482 is a compact, tough, and versatile UHF repeater operating in DMR digital, analogue FM, and mixed mode, with a continuous 100% transmit duty cycle at 25W. Designed for demanding environments both on land and at sea, it combines high performance with robust construction and an integrated power supply, simplifying installation and eliminating the need for bulky external hardware.
With support for AC, DC, and battery backup power modes, plus an optional internal duplexer, the DR482 is the ideal solution for critical communication systems on commercial vessels, offshore platforms, and industrial facilities requiring reliability and uninterrupted operation.
Contact a specialist.
Technical Description
The Entel DR482 represents a new generation of compact UHF repeaters designed to operate in critical environments with continuous communication demands. Its key differentiator is the integration of the AC power supply with an internal backup battery charger, eliminating the need for bulky external units and significantly simplifying installation in radio rooms, bridge wings, and offshore environments with limited space.
Mixed Mode operation allows the DR482 to automatically switch between DMR Digital and Analogue FM, ensuring compatibility with both legacy and modern radios within the same communication infrastructure. With a continuous 100% transmit duty cycle at 25W, the unit is designed for operations requiring permanent system availability without transmission time limitations.
Programming is carried out via a simple Windows application, enabling operators to perform firmware updates and configuration adjustments without returning the unit to the dealer. Available in two variants — DR482 (Digital/Analogue/Mixed mode) and DR482/A (Analogue only) — it meets different operational profiles with the same robustness and reliability that characterize the Entel range.
Specifications
Model: DR482
Frequency range: 400–470 MHz
Output power: 1 to 25W (adjustable)
Transmit duty cycle: continuous (100%)
Modes of operation: DMR Digital Tier II / Analogue FM / Mixed mode
Channel bandwidth: 12.5 kHz or 25 kHz
AC input voltage: 230VAC ±10%, 47–53 Hz (UK/Euro) | 110VAC ±10%, 57–63 Hz (Americas)
DC input voltage: 12.0–15.0 VDC
Power modes: AC only / DC only / AC with battery backup
Integrated power supply: yes, with built-in lead-acid battery charger
Internal duplexer: optional
Dimensions (HxWxD): 95 x 220 x 375 mm
Weight: 3.8 kg
Operating temperature: -30°C to +60°C (no filter) | -30°C to +55°C (dust filter fitted)
Storage temperature: -40°C to +70°C
Relative humidity: up to 95% (non-condensing) at 50°C
Antenna connectors: TX: N-Type female | RX: BNC female (or N-Type with duplexer)
Mounting options: desk / 19″ rack / wall
Supplied with: AC mains lead, USB programming lead, quick start guide
Frequently Asked Questions (FAQ)
The DR482 supports DMR Digital Tier II, analogue FM, and mixed mode operation (automatic switching between both). The DR482/A operates in analogue FM mode only. The choice between models depends on the existing radio infrastructure and the communication requirements of the vessel or facility.
Yes. The DR482 was developed for both land and maritime applications, making it suitable for use on commercial vessels, offshore platforms, and port facilities requiring robust and reliable UHF communication systems.
The DR482 features an integrated lead-acid battery charger. In the event of AC power failure, the system automatically switches to the 12V backup battery, ensuring communication continuity. Battery charging is suspended during transmission to optimize performance.
Yes. The DR482 comes with a simple and intuitive Windows programming application that allows operators to transfer configurations sent by the dealer, apply firmware updates, and add new features without sending the unit back for reprogramming.
The DR482 offers three mounting options: desk, 19″ rack (two repeaters side by side on a 3U rack tray), and wall mount using the optional wall mounting kit (DR/WMK). This versatility facilitates installation in different radio room configurations and onboard environments.
