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General| Channels | 16 |
|---|---|
| Power Output | 5W |
| Battery Type | Li-Ion |
| Battery | 2000 mAh |
| IP Rating | IP68 |
| Weight | 277g |
Provides advice and warnings regarding maintenance and safe usage of the transceiver.
Lists safety precautions and warnings related to handling and charging the battery pack.
Step-by-step instructions for charging the radio's battery pack.
Instructions for physically attaching and removing the battery from the radio.
Explains how to receive signals, select channels, and interpret indicators.
Details the process of transmitting, including PTT usage and power selection.
Details NOAA weather channels, emergency channel access, and Channel 9 usage.
Explains how to set up and use the VOX feature for hands-free transmission.
Explains the meaning of various indicators displayed on the LCD screen.
Lists the main features of the HT644, including IP rating and design.
Details channel selection buttons and special function buttons (16/9, WX, MEM, A/B).
Explains key lock functionality and the PTT button for transmitting.
Details H/L power button and LED status indicators for radio operation.
Provides a table of common symptoms, their probable causes, and remedies.
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