Designed for tough marine environments, the HT644 has firmly established itself as a market-leading commercial-grade VHF. Its rugged, ergonomic design fits comfortably in your hand, and the extremely loud audio means calls are heard by the crew every time. For additional reassurance, the HT644 has a IP68 submersible rating of 2 metres for 4 hours to cope with the harshness of life at sea.
The HT644 has an extensive range of audio accessories including remote speaker microphones and ear defender headsets. Please see our accessories section for a complete listing.
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 Range156 - 163.275MHz
ChannelsAll INT, USA & CAN Marine Channels
Channel Spacing25 kHz
Power Output5W (High) / <1W (Low)
Battery Type2200mAh Lithium-ion
Operating Voltage7.6V
Duty Cycle14.5 hours (5/5/90)
Operating Temperature-20°C to +55°C
Dimensions59.5(W) x 130(H) x 37(D) mm
Weight277g (with battery and antenna)
IP RatingIP68 (2 meters depth for 4 hours)
ComplianceMIL-STD 810C/D/E/F/G
