Retevis RT72 User Manual

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You will not be able to receive any other prompts or show
any other calls until you exit the screen for receiving an
emergency alert.
Note: When an alarm sounds, the LED indicator flashes
orange and any key can be pressed to stop the alarm tone.
The current emergency mode is released by switching
channels or turning off the radio.
6. Send an Emergency Alert With Voice Follow
This feature allows you to send an emergency alert to
another transceiver. After confirmation, your radios
microphone is activated automatically, allowing you to
communicate with other radios without pressing the [PTT]
key. This activated microphone status is called "Hot Mic". If
the [PTT] key is pressed during the preprogrammed Hot
Mic launch, the transceiver ignores [PTT] press and
remains in emergency mode.
1) Press preprogrammed [Emergency On] key.
2) The screen displays “Alarm Sending”, the LED is lit red
and the emergency call icon is displayed.
3) When the alarm confirmation of another intercom is
received, the message “Send Success” is displayed, the
LED indicator lights up in red, the radio of the intercom
automatically activates and emits a signal, and speaks
clearly to the microphone until the end of the Hot Mic.
• If the emergency alert request fails (such as the target
radio that received the alert is not turned on or is not on the
pre-programmed alert jump channel), the screen briefly
displays “No ACK” and the radios will continue to send
emergency calls.
4) The Hot Mic duration ends and stops transmitting. The
screen displays “Emergency Call” and the contact and
intercom ID alternate. The LED indicator lights up in orange
and is accompanied by a local alarm tone until the end of
the reception duration.
5) After the number of emergency calls of the radios is
completed, it will automatically stay on the emergency call
alarm interface.
Note: Press pre-programmed [Emergency Off] key, the screen
displays”Cancel Alarm” and exits the emergency mode. Or
cancel the current emergency mode by switching channels.
7. Receive an Alert Call
The radios that receive the emergency call must be
selected to the pre-programmed alarm-jump channel and
the jump channel must be a group call.
1) Upon receiving an urgent alert request, the screen
displays” Alarm Rcvd” and is displayed alternately with the
sender's alias or ID.
2) An alarm tone sounds and the LED indicator flashes
orange.
3) The alarm tone stops, the LED indicator lights up in
green, enters the receiving state, and listens to the other
party's speech until the end of the hot microphone.

Retevis RT72 Specifications

General

Power Output	High: 5W, Low: 1W
Battery Capacity	2000 mAh
Operating Voltage	7.4V DC
Operating Temperature	-20°C to +60°C
Channel Spacing	12.5 kHz / 25 kHz
Waterproof Rating	IP67
Frequency Range	400-470MHz

Summary

PROGRAMMING NOTES

SECURITY OVERVIEW

FCC Regulations

Federal Communication Commission requirements for radio products marketed in the U.S.

RF Radiation Information

Restrictions and awareness for occupational/controlled RF exposure environments.

EU Regulatory Conformance

Confirmation of compliance with EU essential requirements and directives.

MAIN FEATURES

Broadband Radios

Support for UV double segment frequency range (UHF/VHF).

DMO True2-Slot Dual Time Slot

Direct mode communication with two groups of calls simultaneously.

Digital and Analog Compatibility

Support for both DMR digital and analog communication modes for smooth transition.

High Sound Quality

Utilizes advanced AMBE+2 ectangular TM voice processing for high-quality audio.

ITEMS IN THE PACKAGE

RADIO OVERVIEW

Status Indication

Provides information on LED indicators for current operating states.

Description of LCD Icons

Explains the meaning of various icons displayed on the LCD screen.

PREPARATION BEFORE USE

Accessories Installation

Instructions for installing the antenna, battery, and belt clip.

Charging

Instructions and status indicators for charging the radio and battery.

Battery Information

First Use of Battery

Recommendations for initial battery charging and usage for optimal performance.

Battery Safety Attention

Safety precautions regarding battery handling, short circuits, and disposal.

BASIC OPERATION

Power On the Radio

Steps to turn the radio on and off, including boot tone behavior.

Volume Adjustment

How to adjust the reception volume using the power switch/volume control knob.

Select a Zone

Explanation of zones and how to manage channels within them.

BASIC OPERATION (Continued)

Select a Zone (Two Ways)

Methods for selecting a zone via programming key or menu.

Digital and Analog Channel Switch

How to switch between analog and digital channels.

Single/Dual Band Mode Switch

Switching between primary and secondary channels or dual standby modes.

BASIC OPERATION (Continued)

Select Channel, User ID, Group Call ID

How to select channels, user IDs, or group call IDs.

Receive and Reply Group Calls

Procedures for receiving and replying to group calls.

Receive and Reply Private Call

Steps for receiving and replying to private calls.

BASIC OPERATION (Continued)

Initiate Group Call

Steps to start a group call using channel mode or contacts.

Start a Private Call

How to initiate a private call using channel mode or contacts.

EMERGENCY ALARM FUNCTION

Emergency Alarm

How to activate the emergency alarm for assistance.

Send Emergency Alert

How to send a non-voice emergency alert and its confirmation process.

Receive Emergency Alert

What happens when an emergency alert is received.

MENU OPERATION

Input Methods

Overview of supported input methods (English, Pinyin, Number).

How to Use the Menu

General steps for navigating and operating the menu system.

MAIN MENU FUNCTIONS

Contacts

Managing the contact list, including adding, editing, and deleting entries.

Radio Check Function

Initiating radio detection to check if another party is online.

SCAN Function

How scanning works and its purpose.

MESSAGE FUNCTION

Edit and Send Messages

Steps for editing and sending text messages.

Receive Messages

How the radio indicates and handles incoming messages.

CALL RECORDING FUNCTION

Basic Encryption

How basic encryption works and its requirements.

MENU SETTINGS

Radio Settings

General radio settings for customization.

TX Power

Switching between high and low transmitting power.

Keypad Lock Switch

Manual or automatic keypad locking options.

VOX Settings

Configuring voice activation for hands-free calls.

MAIN TECHNOLOGICAL SPECIFICATION

General Specifications

General technical parameters of the radio.

Transmission Specifications

Technical specifications related to radio transmission.

Reception Specifications

Technical specifications related to radio reception.

TROUBLESHOOTING

Maintenance and Cleaning

Maintenance Precautions

Guidelines for maintaining the radio's condition.

Cleaning Instructions

Steps for cleaning the radio and its components.

RF ENERGY EXPOSURE AND PRODUCT SAFETY GUIDE

RF Exposure Compliance and Control Guidelines

Guidelines and operating instructions for controlling RF exposure.

Protect Your Hearing

Recommendations for safe listening volumes and earphone use.

Approved Accessories

Importance of using approved accessories for RF exposure compliance.