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Covers disclaimer, copyright, warranty, and RF emissions notice for the product.
Details compliance with FCC rules regarding radio frequency interference and operation.
Outlines compliance with ISEDC radiation exposure limits and regulations.
States CE compliance and warns about unauthorized modifications and potential interference.
Lists countries within the European Union for which the product is intended.
Identifies registered trademarks associated with the product and its manufacturer.
Explains the Marine Mobile Service Identity (MMSI) and Digital Selective Calling (DSC) functions.
Provides guidance on how to interpret notations and warnings within the user manual.
Lists the key features and capabilities of the RS20 VHF radio.
Explains how to navigate menus, select options, and enter alphanumeric data.
Details the symbols displayed on the LCD screen during startup and operation.
Defines the various icons that may appear on the screen during normal operation.
Illustrates and explains the elements shown on a typical device display.
Describes the functions of the channel knob, VOL/SQL, EXIT, DSC CALL, Power/Backlight, and Weather Channel buttons.
Explains how to use the SCAN and TRI (Watch) functions for monitoring channels.
Details the 16/9 priority channel function and initiating a DISTRESS call.
Covers H/L transmission power adjustment and the Push-to-Talk (PTT) button.
Guides the user through selecting scan modes and channels.
Explains My Channels, Edit My Channels, and various Watch modes.
Details options for customizing screen display, backlight, and contrast.
Covers settings like Local/Dist, UIC, Power Output, CH Name, Key Beep, and Units.
Explains GPS settings, time offset, time format, and checksum.
Covers DSC function, MMSI entry, ATIS, and call acknowledgement settings.
Details DSC inactivity timeouts and various alarm configurations.
Explains DSC alarm customization and how to reset device settings.
Explains initiating Individual and Distress calls via the DSC menu.
Details how to make Group calls and All Ships calls for broadcasting.
Covers viewing call logs, making position requests, and sending position reports.
Explains how to perform DSC tests and view MMSI/GPS data.
Guides on setting up and using the Track Buddy feature for location sharing.
Details on adding, editing, and managing contacts and groups for DSC communication.
Explains how to access and select frequently used channels in the 'MY CHANNELS' list.
Describes how to modify the list of frequently accessed channels.
Guides on selecting and adding menu options as shortcuts for quick access.
Lists items included in the product box and checks before installation.
Covers bracket and flush mounting, and criteria for selecting a suitable location.
Step-by-step instructions for mounting the radio using the gimbal bracket.
Step-by-step instructions for recessing the radio into a cavity.
Instructions for installing the bulkhead bracket for the hand microphone.
Details on how to connect the radio's power, speaker, and data cables.
Guides through initial setup steps including region, MMSI, and time settings.
Explains the importance and entry process for MMSI and ATIS IDs.
Describes the Automatic Transmitter Identification System (ATIS) requirements.
Lists general operating parameters, power supply, and environmental ratings.
Details physical attributes like LCD size, dimensions, weight, and waterproof rating.
Specifies transmitter frequency range, output power, and signal characteristics.
Details receiver sensitivity, selectivity, and audio output power.
Provides transmitting frequencies for maritime VHF communications in EU and international waters.
Includes general and specific notes to help understand the channel chart data.
Lists transmitting frequencies and channel names for USA maritime VHF communications.
Lists transmitting frequencies and channel names for Canadian maritime VHF communications.
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General
