General Environmental protection to IP68 (2 Meters for 4 hours) The practical HT644 Series 2.0 portable enjoys an IP68 (2 Meters for 4 hours) rated construction, which means that they are dust protected and fully Submersible. MILSTD 810C/D/E/F/G Meeting MIL-STD 810C/D/E/F/G and providing commercial grade construction for tough, enduring performance. Entel's HT644 Series 2.0 portable conforms to stringent standards, enabling it to withstand the everyday rigours of shock, vibration and the corrosive effects of dust and moisture, ensuring many years of trouble free use. Built to Endure Harsh Marine Conditions The HT644's IP68 rating ensures it remains operational even after submersion in water up to 2 meters deep for 4 hours. Its compliance with MIL-STD 810C/D/E/F/G standards guarantees durability against physical shocks, vibrations, and corrosive environments Extended Battery Life for Prolonged Missions With its 2200mAh Li-ion battery, the HT644 offers a 14.5-hour duty cycle, ensuring uninterrupted communication during extended operations. The battery's design eliminates the 'memory effect,' allowing for consistent performance without the need for full discharges before recharging Comprehensive Channel Coverage The radio provides access to all International, USA, and Canadian marine channels, including weather and private channels, ensuring comprehensive communication capabilities for maritime professionals operating in various regions Hands-Free Operation Enhances Safety The VOX (Voice-Activated Transmit) feature, when used with compatible audio accessories, allows for hands-free communication, enabling crew members to maintain focus on critical tasks without manual radio operation Technical Specifications Frequency Range: 156 - 163.275MHz Channels: All INT, USA & CAN Marine Channels Channel Spacing: 25 kHz Power Output: 5W (High) / <1W (Low) Battery Type: 2200mAh Lithium-ion Operating Voltage: 7.6V Duty Cycle: 14.5 hours (5/5/90) Operating Temperature: -20°C to 55°C Dimensions: 59.5(W) x 130(H) x 37(D) mm Weight: 277g (with battery and antenna) IP Rating: IP68 (2 meters depth for 4 hours) Compliance: MIL-STD 810C/D/E/F/G
