Zartek ZA-720 User Manual Download Page 11

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OPTIONAL FEATURES

Battery Save Function

The Battery Save function decreases the amount of power used when a 

signal is not being received and no operations are being performed (no keys 

are being pressed, and no switches are being turned). While the channel is 

not busy and no operation is performed for 10 seconds, Battery Save turns 

ON. When a signal is received or an operation is performed, Battery Save 

turns OFF.

 

y

Factory programmed on Save ON.

Squelch

The squelch level is used to adjust the threshold at which signals will open 

the audio channel. A low level will allow weaker signals to be audible, al-

though with more background noise. However, if weak signals are annoying, 

the level can be adjusted higher to open the channel only when stronger 

signals are received.
You can set up the squelch level from 0 to 9. The higher the squelch level, 

the less noisy is the signal as only stronger signal are accepted. The lower 

the squelch level the noisier the signal is, as weak signals are also allowed. 

As the communication range or obstructions between radios increase, the 

weaker the signal becomes. It is advised to use a lower squelch level to get 

further communication range.

 

y

Factory programmed on Squelch level 3.

Time-out Timer

The purpose of the Time-out Timer is to prevent any person jamming up a 

channel for a long time whilst transmitting. If the time that you continuously 

transmit exceeds the set Time-out time, the transceiver will stop transmitting 

and a tone “beep” will sound. To stop the tone, release the PTT switch. You 

can press the PTT switch again to resume transmitting.

NOTE:

 you can set up the time level: 15s, 30s, 60s, 90s …… 600s.

 

y

Factory programmed on TOT 300s.

VOX (Voice-operated Transmission)

The ZA-720 has a multi-level sensitivity built-in VOX function. You can enjoy 

talking and listening without pressing PTT key as transmit is automatically 

activated by sound. This turns your radio into hands-free “walk & talk” when 

used with a headset. Voice activation is used to operate the radio in hands-

free mode or as a noise / baby monitor. The radio will begin transmitting 

when a noise or voice is heard. There are many headset options (see op-

tional accessories below) which can be used in VOX mode allowing for full 

hands-free communication.

NOTE

:

 That VOX can be activated in software and manually.

Manual VOX ON/OFF:

 First set the channel from CH 1 – 5, then switch off 

the radio. Now Hold in the PTT & Monitor Buttons together and switch radio 

On whilst holding them in and then release. The radio will announce VOX 

ON. Repeat the process to toggle VOX OFF.

VOX level

The sensitivity level of the microphone can be adjusted to allow different 

volumes of sounds to make the radio begin and remain transmitting. There 

are 1 - 5 levels with 1 being the highest and most sensitive to lower volumes 

of sound. If the radio is used in a very noisy environment it is recommended 

to use a low sensitivity level to avoid the radio transmitting unnecessarily. At 

low sensitivity level it will be required to speak loudly into the microphone to 

activate the radio. At high sensitivity, a soft voice is all that is required which 

enable the radio to be placed at a further distance from the noise source 

(typically 30cm max).

Scan

A scan function is useful when you want to find other people on similar 

frequencies or to monitor communication within your group. If an active 

channel is found the scan will stop and lock on to that channel. You can now 

transmit and receive on this frequency. When the signal is gone for 5 sec-

onds, scanning will resume. LED flashes when scanning.

There are 2 ways to setup scanning:
1) Via Programming Software:

 Program CH 16 to be blank with no data. 

Select CH 16 to scan. The radio will begin scanning all the selected chan-

Summary of Contents for ZA-720

Page 1: ...USER S MANUAL Extra Long Range Ultra Thin Durable Li ion Battery Desktop Charger Loud Clear Audio 16 Channels...

Page 2: ...0 470MHz on 2W of transmitting power Please read this manual carefully before using the radio The information presented here will ensure that you get maximum performance and functionality from the rad...

Page 3: ...ct a different channel Note that Channel 9 10 11 are set on the open frequency with out a sub tone and channels 13 to 16 have been set with a tone 20 for more privacy A sub tone is used to privatise c...

Page 4: ...ther settings such as Squelch level VOX or reassigning the side key for different functions can also be programmed Licence free use of this transceiver limits the fre quencies to the 446MHz and 464MHz...

Page 5: ...List 1 RADIO OVERVIEW 2 GETTING STARTED 3 Install Remove the Battery 3 Install Remove the Antenna 3 Install Remove the headset programming cable 3 Charging the Battery 3 BASIC OPERATION 5 Power ON OF...

Page 6: ...ite www zartek co za Item List Item Quantity Handheld UHF FM Transceiver 1 Detachable Antenna 1 Desktop Mains Charger 1 Li ion Battery Pack 1600mAH 1 Belt Clip 1 Users Manual 1 RADIO OVERVIEW Detachab...

Page 7: ...adio Using desktop cradle Plug the cable from mains adaptor into the back of the desktop cradle and then insert the radio in the cradle Light on the cradle will show RED when charging and GREEN when f...

Page 8: ...r phones The radio works indoors as well as outdoors Typical rough estimate ranges for different terrains are y y Indoors or Shopping centre 300m 1200m y y Building 5 30 stories y y City centre dense...

Page 9: ...programming cable Check the Settings Communication Port to select the correct COM port Reading data Click on the READ icon and press OK to begin reading the data from the radio Once loaded the data c...

Page 10: ...0 DQT digital quiet tones that can be selected These tones are used to privatize conversations and reduce in terference from other users on the same frequency A CTCSS QT DQT tone is a sub audible tone...

Page 11: ...function You can enjoy talking and listening without pressing PTT key as transmit is automatically activated by sound This turns your radio into hands free walk talk when used with a headset Voice ac...

Page 12: ...r license version Maximum communication range is achieved when the transceiver is set to high power mode whilst lower power settings will save battery life The power can be set on low 500mW or High 2W...

Page 13: ...es besides group members are pres ent on the channels y y Change the QT DQT Be sure to change the tone on all transceivers in your group The transceiver continu ously rings y y Channel programming is...

Page 14: ...NOTE...

Page 15: ......

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