Warranty
The HT644 comes with a 24 month warranty,
for details see our full terms & conditions.
Advice
• Do not use options or accessories not
specified by Entel
• Ensure that the radio is used within the
parameters for which it was designed
• Please switch the transceiver off before
connecting optional accessories
Warning
Turn the transceiver off in the following
locations:
• In explosive atmospheres (flammable gas,
dust including metallic & grain powders etc)
• Whilst taking on fuel or while parked near a
fuel station
• Near explosives or blasting sites
• In aircraft, medical institutions or near
persons known to be wearing a pacemaker
Caution
• Do not disassemble or modify the
transceiver for any reason
• Do not transmit while touching the antenna
terminal or any exposed metallic parts of the
aerial as this may result in a burn
• Please check and observe regulations in your
country with regard to use whilst driving
End of Life Disposal
When your Entel transceiver reaches the end of its
useful life, please ensure that the unit is disposed of in
an environmentally friendly way. For country specific
information please see www.entel.co.uk/recycling.
Cleaning your Radio
After exposure to any potentially corrosive substance
including salt water it is recommended to thoroughly
wash the transceiver in fresh water. If washing with the
battery removed from the radio, ensure that the
battery is not immersed in water & that the accessory
cap is attached & clean only with a damp cloth.
Introduction
3
Introduction
The Entel HT644 is a professional marine handheld transceiver that operates on the VHF marine band.
The HT644 has 58 marine international channels, 10 weather & 36 dealer programmable private
channels. The 58 marine channels are switchable to comply with USA, International or Canadian
regulations. This is done via the radio’s keypad. It has an emergency channel, which can be immediately
selected from any channel using the red 16/9 button. Weather channels can also be accessed immediately
using the [WX] key. The HT644 includes the following features: Scan, A/B quick access channels, battery
life indicator, VOX (voice activated transmit), low battery indicator, large LCD with back light.
• HT644 Transceiver
• CNB750E Rechargeable 1800mAh Li-Ion battery
• CBH750 Spring loaded belt clip
Packing List
• CATXX Antenna
• CCA trickle charger included with certain models
Radio Care
Note: Do not
wash the
transceiver if
you suspect the
waterproofing
seal may be
damaged. Please
return to your
supplier for
inspection /
repair.
