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General| Brand | Retevis |
|---|---|
| Model | H777S |
| Category | Two-Way Radio |
| Language | English |
Essential guidelines for safe and effective radio usage, covering warnings and basic rules.
Procedures for unpacking the radio and verifying all supplied accessories are present.
Overview of the radio's physical components and controls.
Information, notices, and warnings related to the radio's battery.
Step-by-step instructions for charging the battery correctly.
Procedure for the charger to perform a self-test.
Explanation of the indicator lights during battery charging.
Important notes and precautions to follow before and during battery charging.
Instructions on how to connect an external headset to the radio.
How to activate and use the radio's scanning feature.
Enabling the battery save function to extend standby time.
Explanation of the busy channel lock feature.
How to use Voice Activated Transmission (VOX).
Setting the language for voice prompts and channel annunciation.
Understanding the low battery alert indicator and tone.
Adjusting the squelch level for signal reception.
Purpose and function of the Time Out Timer feature.
Explanation of the radio's voltage protection mechanisms.
Explanation of CTCSS/DCS sub-audio signaling for selective communication.
List and information about optional accessories for the radio.
Common issues encountered with the radio and their solutions.
Technical specifications including frequency, CTCSS, and band width.
Guide for safe usage and RF energy awareness compliance.
Awareness of and compliance with local government regulations.
Requirements for obtaining a license to operate the radio.
Rules and consequences of unauthorized radio modifications.
Compliance with Federal Communications Commission (FCC) rules.
Compliance with European Union (CE) directives.
Compliance with Industry Canada (IC) regulations.
Detailed information on RF exposure limits and usage.
Warning regarding small parts and potential choking hazards.
Conditions and situations when the radio power must be turned off.
Guidelines for protecting hearing from loud noises and high volume.
Precautions to prevent burns from antennas, batteries, and hot components.
Information about heat generation during prolonged radio transmissions.
Forbidden actions and safety precautions during operation.
Information on using approved accessories for compliance.
Product guarantee card and details.
Important notes regarding the warranty and after-sales service.
Conditions and actions that void the product warranty.
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