rugged radio:

Core DMR Technical Features

1. ETSI DMR Tier I / Tier II compliant Supports DMR Tier I licence‑free digital communication and DMR Tier II conventional digital mode; works in time‑division multiple‑access (TDMA) 2‑slot technology. One single 12.5 kHz channel carries two independent voice or data calls, greatly improving frequency‑spectrum utilization.
2. Dual‑mode operation: Digital + Analog Seamlessly switch between DMR digital mode and analog FM mode. Realizes inter‑communication with legacy analog radios for smooth system migration without discarding existing fleet devices.
3. Digital voice performance Built‑in advanced digital voice codec. Effectively suppress background noise, reduce signal distortion; audio remains crisp and intelligible even under weak receiving signal conditions.
4. Rich DMR signalling functions Supports private call, group call, all‑call, emergency alarm call, radio check, remote monitor, remote kill/stun, remote wake‑up, short data message, contact list, group alias display. Realizes precise call targeting instead of broadcasting to all users.

Hardware Specifications

• Frequency Band: VHF 136‑174 MHz / UHF 400‑480 MHz (optional)
• Channel Capacity: Up to 1024 DMR digital channels / 256 analog channels
• RF Output Power: VHF/UHF high power up to 5W; low power 1W adjustable
• Frequency Spacing: Digital 12.5 kHz; Analog 12.5 kHz / 25 kHz
• Display & Keypad: Optional full‑color LCD display / simple segment screen; full keypad or limited keypad versions available
• Audio: High‑loudness built‑in speaker; support external speaker‑microphone, earpiece accessories via audio jack
• Battery: High‑capacity Li‑ion battery; long standby and talk time for all‑shift working; support battery level real‑time display
• Environmental Protection: IP54 / IP67 dust‑proof and water‑proof rating; complies with MIL‑STD‑810H environmental test standards, resistant to shock, vibration, dust, moisture and temperature variation, suitable for harsh industrial outdoor environments
• Programming: Configurable via PC programming software; read/write contact list, group list, channel parameters, function keys and signalling settings

Functional Highlights

• Emergency alarm: One‑touch emergency button transmits alarm notification with unit ID to dispatcher or assigned group
• Man‑down function (optional): Automatically trigger emergency alert when radio detects operator falls or stays motionless
• GPS positioning (optional): Built‑in GPS module, reports location data over DMR data channel for personnel tracking
• Encryption: Supports digital voice encryption to prevent eavesdropping of onsite communications
• Over‑the‑Air Programming (OTAP): Remote parameter configuration and firmware upgrade over‑air for fleet management
• Scan function: Digital channel scan, group scan, mixed digital‑analog scan
• Voice announcement: Voice prompt for channel switching, power‑on status