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Home  >  Products  >  Digital Radios  >  D72

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D72 4W Dual Band Digital Two Way Radio

This compact, 128¡Á160 TFT screen display, dual band/display/receive/standby/ptt digital two way radio features a full numeric keypad for added functionality and excellent battery life and audio quality. GPS and 300 hours Recorder upgrade available. Up to 19 hours of battery life between charges.

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¡ª Highlights ¡ª

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Dual Band ¡¡ Dual PTT
¡¡ Radios with Dual Band capability can transmit and receive on both UHF and VHF radio bands. ¡¡ ¡¡ You can monitor two channels at one time. If you have two groups of people you contact regularly this can be a very useful feature.
Dual Display ¡¡ Dual Watch
¡¡ The LCD screen allows users to view the current information of the two frequency bands or other settings, providing a larger amount of visual information. ¡¡ ¡¡ Allows user to choose 2 priority channels to scan.
Dual Receive ¡¡ Receiver Only
¡¡ Like having two radios in one, the dual receive function allows you to receive and listen to two different channels simultaneously . ¡¡ ¡¡ In some special cases, you only need to receive and do not need to transmit, then you can enable this function.

2 Programming Keys ¡¡ Channel Alias
¡¡ You can program or assign to perform a user specific function. Personalize the required functions for convenient and quick operation. ¡¡ ¡¡ Allows the user to give each channel a user defined name.

Monitor ¡¡ Channel Step
¡¡ This feature allows you to check if a channel is clear before you transmit. ¡¡ ¡¡ Channel refers to the frequency value occupied when transmitting and receiving.
Scan ¡¡ Priority Scanning
¡¡ The channel scan feature enables a two way radio to continuously scan each channel for activity. ¡¡ ¡¡ During the scanning process, the set priority channel is scanned first.
Hands-free VOX ¡¡ Power Adjustable
¡¡ This hands-free feature allows you to get on with other manual tasks while you stay in touch with other users. ¡¡ ¡¡ This feature allows you to switch between high and low power modes on the radio.
Wide/Narrow Band ¡¡ Keypad Lockout
¡¡ Narrowband takes up less frequency space and lowers the chance for interference, wideband channels can carry more infos but require more power. ¡¡ ¡¡ When activated this feature allows the user to lock the buttons so that in case the user presses them by mistake, it does not result in some unwanted action.
Battery Saver ¡¡ Squelch Tail Elimination
¡¡ The radio will switch to automatically after being left unused for a certain amount of time, lessens the drain on your battery and makes it last longer. ¡¡ ¡¡ Squelch Tail Elimination(STE) is used to eliminate squelch tails by sending a brief low-frequency tone right before a transmission ends.
Time-out Timer ¡¡ Scrambler
¡¡ This feature will stop the transmission of the two-way radio if the radio is transmitting for a long duration. ¡¡ ¡¡ A technology is used to scramble communications to prevent other radio users in the vicinity from listening to your conversations.
Digital Encryption ¡¡ Radio Check
¡¡ Some radios have encryption built in so that other radio operators cannot listen in to your communications. ¡¡ ¡¡ If activated, this feature allows you to determine if other radios are active on the system without disturbing the radio user.
Contact List ¡¡ Call Log
¡¡ A contact list is a collection of screen names .To communicate with someone on the list, the user can select a name and act upon it. ¡¡ ¡¡ Call logging is the process of collecting, analyzing, and recording data on calls.
SMS ¡¡ One Key Call
¡¡ This feature allows you to send SMS text messages to other people in the group. ¡¡ ¡¡ This feature allows the user to make a call by pressing a special key.
PTT ID ¡¡ Private Call/Group Call/All Call
¡¡ This feature allows the radio to transmit and/or receive a radio ID and lets you know who is transmitting to you. ¡¡ ¡¡ Private Call allows a radio user to place a call to just one user, Group Call provides voice call service in a group.
Stun/Kill/Revive ¡¡ Remote Monitor
¡¡ Stun and Kill disables a radio over the air and Revive restores the disabled radio. ¡¡ ¡¡ This feature can secretly and remotely monitor the voice activities around a certain walkie-talkie device without notification.
Repeater Capable ¡¡ Talk Around
¡¡ These radios are capable of being used with a repeater station, which can greatly increase your communications range and reliability. ¡¡ ¡¡ A radio communicates through a repeater to bypass it and communicate directly to the radio on the other end of the connection instead.
Lone Worker ¡¡ 2 Time Slot
¡¡ This safety feature requires operators to check in at certain intervals of time. If the user does not check in within that time frame, an alert is triggered. ¡¡ ¡¡ 2 slot achieves two groups of calls at a frequency point at the same time so that the communication efficiency is doubled and frequency resources are saved.
Voice Prompts ¡¡ Power-on Tone
¡¡ The radio actually talks to you in a human-like voice. You will hear the prompt spoken in plain relative language. ¡¡ ¡¡ A sound prompt when you turn on the power, which is a very practical function in dark places or for people with visual impairments.
Battery Capacity Check Alert ¡¡ Emergency Alert
¡¡ This function is to query the current battery power based on the sound. ¡¡ ¡¡ If an operator needs to send an immediate and urgent request for help, the push of just one button can trigger a call for assistance.
Keypad Tone ¡¡ Call Tones
¡¡ Pressing a single key of keypad produces a sound to remind that you already successfully press this key. ¡¡ ¡¡ Call tones allow you to transmit a tone to other radios in your group to alert them that you want to talk.
1750Hz ¡¡ Talk Permit Tone
¡¡ 1750Hz is used to connect to the repeater. ¡¡ ¡¡ This alert tone sounds after the PTT button is pressed and the radio is able to transmit on the channel.
CTCSS/DCS ¡¡ DTMF
¡¡ CTCSS uses continuous tones below 300 Hz whereas DCS uses digital data and all encoded words can be used on the same channel without interference. ¡¡ ¡¡ DTMF is a technology that uses a combination of tones to perform a number of useful signaling operations.
Color Code ¡¡ AES 256 Encryption
¡¡ There 15 color codes (0-15). A radio must be programmed with the correct color code to access the repeater. ¡¡ ¡¡ AES-256 encryption uses the 256-bit key length to encrypt as well as decrypt a block of messages.
Recorder (Optional Paid Feature) ¡¡ Noise Reduction (Optional Paid Feature)
¡¡ The user enables to record and store short incoming audio, or record their own short message. ¡¡ ¡¡ Noise reduction is the process of removing noise from a signal, in order to improve background sound quality to be clearer.
Global Navigation Satellite System(GNSS) (Optional Paid Feature) ¡¡ ¡¡ ¡¡
¡¡ These two-way radios that have a GPS function can report the position of the radio. ¡¡ ¡¡ ¡¡

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¡ª Specifications ¡ª

General

Frequency Range

136-174 & 400-470 MHz

Channel Capacity

3000

Zone Capacity

250

Channel Spacing

12.5/25kHz

Frequency Stability

¡À500Hz

Antenna Impedance

50¦¸

Operating Voltage

DC 7.4V

Battery Capacity

2200mAh

Battery Life(5-5-90 Duty Cycle,High TX Power)

Analog:13 hours
Digital:19 hours

Dimensions (ex ant, H¡ÁW¡ÁD)

133(H)*61(W)*40(D) mm

Weight

About 280g

Transmitter

Output Power

4W/1W

Analog FM Modulation

12.5 kHz: 11K0F3E
25 kHz: 16K0F3E

Digital 4FSK Modulation

12.5 kHz data:7K60FXD
12.5 kHz data & voice:7K60FXW

Conducted/Radiated Emission

< -36dBm [ < 1 GHz];
< -30dBm [ > 1 GHz ]

Modulation Limiting

¡À2.5kHz @12.5 kHz
¡À5kHz @ 25kHz

FM Hum & Noise

<-45 dB@25K;
<-40 dB@12.5K

Adjacent Channel Power

¡Ü-65 dB@25K
¡Ü-60 dB@12.5K

Audio Response

£«1dB¡«£­3dB

Modulation Distortion

¡Ü5%

Digital Vocoder Type

AMBE+2

Digital Protocol

ETSI-TS102361-1.-2.-3

Carrier Frequency Tolerance

¡À500Hz

Receiver

Sensitivity(Analog)

-123dBm@12dB SINAD

Selectivity(Digital)

¡Ü-117dBm(Eer¡Ü5% )

Adjacent Channel Selectivity

¡Ý60dB

Inter Modulation Response Rejection

¡Ý50dB

CSQ Hum & Noise

<-45 dB@25K;
<-40 dB@12.5K

Rated Audio Power Output

¡Ü1000mW

Rated Audio Distortion

<3%

Conducted Spurious Emission

< -57 dBm [ < 1 GHz ];
< -47 dBm [ > 1 GHz ]

Co-channel Rejection

¡Ý-12dB

Block

¡Ý84dB

Received Signal To Noise Ratio

<-45 dB@25K;
<-40 dB@12.5K

NOTE:

1.All specifications are subject to change without notice due to continuous development.

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¡ª Standard Accessories ¡ª

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TP003

BP001
(2200mAh)

CC003

PC2002

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PP1002

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¡ª Optional Accessories ¡ª

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BP002
(2800mAh)

LP002

EE004

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