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General| Brand | Icom |
|---|---|
| Model | IC-M421 |
| Category | Transceiver |
| Language | English |
Details installation requirements, focusing on RF exposure limits and antenna placement.
Instructions for programming the 9-digit Maritime Mobile Service Identity code.
Details how to manually input latitude, longitude, and UTC time.
Explains the procedure for transmitting a distress call and its acknowledgments.
Guides on initiating and handling various DSC calls like individual, group, and all ships.
Describes how to respond to distress, group, and position request call acknowledgements.
Provides solutions for common operational problems and error conditions.
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