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General| Type | Marine Handheld Transceiver |
|---|---|
| Modulation | 16K0G3E |
| Weight | 277g (with battery & antenna) |
| Power Supply | 7.4V DC |
| Battery Type | Lithium-Ion |
| Battery Life | 10 hours (5-5-90 duty cycle) |
| Approvals | MED |
Declares compliance with IMO and SOLAS requirements for VHF transceivers.
Lists the contents of Package 1 and Package 2 for the HT644 GMDSS.
Provides advice and warnings on maintaining and cleaning the radio.
Instructions on how to attach and detach the radio's aerial.
Guide on connecting audio accessories and attaching the belt clip.
Guidance on storing and managing the battery pack for extended periods.
Safety precautions and warnings for handling the battery pack.
Step-by-step instructions for charging the radio's battery pack.
Instructions for physically attaching and detaching the battery pack.
Procedure for powering the radio on and off and adjusting volume.
Steps for receiving signals and adjusting squelch for clear reception.
Instructions for transmitting, including monitoring and power levels.
Information on channel modes, weather, emergency, and channel 9 access.
How to use the monitor button and adjust squelch sensitivity.
Explanation of channel modes and instant access programming.
How to program, start, stop, and delete channels from the scan list.
Steps to enable, configure sensitivity, and disable the VOX feature.
Detailed explanation of various indicators displayed on the LCD screen.
Identifies and explains the function of each button on the front panel.
Explains controls on the side and rear, including battery and connectors.
Lists of available accessories like batteries, chargers, cases, and audio options.
Details on specific accessories and overview of standard/programmable features.
Overview of standard radio features and dealer-programmable options.
Defines technical terms and abbreviations used in the manual.
Provides common symptoms, probable causes, and remedies for issues.
Lists channels with set, frequency, and intended use (CH 1A to 21A).
Lists channels with set, frequency, and intended use (CH 22A to 73).
Lists channels with set, frequency, and intended use (CH 74 to 88).
General technical details like frequency range, battery life, size, and weight.
Detailed technical specifications for the transmitter and receiver.
Blank page for recording important information like serial number and programmed channels.
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