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Home Channel 

Changes to the home channels. 

Talk around   

Switch the radio between talk around and repeater mode.     

VOX Selection 

Enable or disable the VOX function. 

Monitor momentary/ 

              Call Cancel 

Hold  this button to close CTCSS, DCS, 2Tone/DTMF signaling 

according to the set data. Loosen this button to return to the normal 

operation. Press this button in the selective call

 

state to quit such a 

state.  

 

Monitor/Call Cancel 

Press this button to trigger this function and the CTCSS, DCS, 

2Tone/DTMF signaling will be closed, so you can receive the signal 

that can't be heard in the normal operation. Press this button again 

to return to the normal operation. Press this button in the selective 

call state to quit such a state.   

Squelch off momentary/ 

Call Cancel 

Hold this button to open the squelch. loosen this button to return to 

the normal operation. Press this button in the selective call state to 

quit such a state.     

Squelch off/Call Cancel     

Press this button to open squelch, press it again to return to normal 

operation. Press the button in the selective call state to quit such a 

state 

Emergency Alarm   

When you press the top button set as “Emergency Call”, the 

radio will enter emergency state, the radio can sound alarm 

tone or transmit ID code or background tone to your partners or 

the system, the detail setting is programmed by your dealer.   

Cancel Emergency Call 

Press the top button set as “Cancel Emergency Call” to cancel 

Emergency function. 

Man-down

 

Press this key to enable or disable man-down function, which is 

an optional function. If being in “man-down status” for a 

setting time, the radio will sound pre-alert tones. If not being 

set straight in another setting time, the radio will enter 

“Emergency state.”   

Radio Call 

Press this button and to enter the fast menu mode of “Radio Call”. 

For detailed operation, see “Menu Operation”. 

Call Button 1   

Sends the DTMF/2Tone/5Tone code assigned to call 1 key. 

Call Button 2   

Sends the DTMF/2Tone/5Tone code assigned to call 2 key. 

Call Button 3   

Sends the DTMF/2Tone/5Tone code assigned to call 3 key. 

Call Button 4   

Sends the DTMF/2Tone/5Tone code assigned to call 4 key. 

Menu Select  /Enter  

  

To enter the menu mode or make menu selections. 

Horn Alert 

Enables the Horn Alert 

Lone worker     

When the radio is set in lone work, it will sounds pre-alert 

tones before the Lone Work time expires, and the user should 

press any key on the radio within the Reset Time, indicating the 

user is safe, otherwise, the radio will enter emergency state 

automatically.  

Scan List Edit   

     

Press this button and the radio will enter the fast menu mode for 

scan list edit. For details, see “Menu Operation”.   

 

GPS Information View   

Press this button and the radio will enter the menu mode of GPS 

Information Menu.   

Summary of Contents for CU780

Page 1: ...e radios do not disassemble the radio by yourself to avoid damages Warning Your radio generates RF electromagnetic energy during transmit mode This radio is designed for and classified as ccupational...

Page 2: ...nsure FCC RF exposure compliance requirements are not exceeded To provide the recipients of your transmission the best sound quality hold the antenna at least 5 cm 2 inches from your mouth and slightl...

Page 3: ...ling the Optional Speaker Microphone Installing Removing the Belt Clip Radio Overview Basic Operations Programmable Button Function VOX Voice Operated Transmission Radio Setting TOT Time out Timer Bat...

Page 4: ...the package box carefully We recommend checking the radio and the supplied accessories in the following table carefully If any article is missing or damaged please contact your reseller without delay...

Page 5: ...ger enters a protective state and no more charge is delivered to the battery Please stop charging in such situation and remove the battery from the charger Notice The new battery is not fully charged...

Page 6: ...push the battery until you hear a latch click the battery is now installed Removing the battery pack If you want to remove the battery from the radio first press the battery latch located on the bott...

Page 7: ...e jack for external speaker MIC and then insert the plug of the external speaker or microphone into the jack on the radio When inserting the accessory plug make sure it is properly aligned straight to...

Page 8: ...8 0 supplied with the radio and fix these screws on the holes in the radio clip and into the holes in the aluminum case If you want to remove the clip from the radio just unscrew them and remove the c...

Page 9: ...T PUSH TO TALK Button To make a call press and hold the PTT button then speak into the microphone in normal voice Release the PTT button to receive signals Side Button 1 Programmable Button Side Butto...

Page 10: ...Button Programmable Button Channel Selector Rotate to select channel 1 512 Power Volume Knob Turn clockwise to switch on the radio Turn counterclockwise till a click is heard to switch off the radio R...

Page 11: ...if the dealer has set it The radio is now in Rx mode 2 Adjust Volume Rotate the Power Volume knob to adjust the volume with the monitor key pressed Turn clockwise to increase the volume and countercl...

Page 12: ...ieve optimal voice quality 5 Receive a Call Release the PTT button and adjust the volume at the proper position to receive calls The dealer can set CTCSS DCS 5 Tone or 2 Tone DTMF or MDC on your radio...

Page 13: ...to enter the Squelch Level Adjustment Mode first and then press the button to adjust the level Press the O button to save the selected squelch level and quit this mode Key lock To toggle between lock...

Page 14: ...one to your partners or the system the detail setting is programmed by your dealer Cancel Emergency Call Press the top button set as Cancel Emergency Call to cancel Emergency function Man down Press t...

Page 15: ...G Press C button to return to the previous operation 1 2 Receive Selective Call Receiving a selective call you will hear the alert tone and the LED indicator will blink orange Icon flashes and the cal...

Page 16: ...nd or repeater mode through talkaround button 8 Utilities The item can help you customize some setups of the radio The operating steps go as follows A Press the Menu Selection Enter button to enter th...

Page 17: ...o disable the scan function 9 2 Nuisance Delete If a channel continuously generates noise or interference press the button to remove this channel from the scan list temporarily Note the priority chann...

Page 18: ...each channel even if the channel is changed or the radio is shut down In the OST state P2 icon will display Press OST button again to return to normal operation 11 GPS Information View If the radio st...

Page 19: ...smitting the radio sounds pre alert tone b After the alarm tone if the transmitting time is longer than the preset time limit the time out timer will be activated 4 TOT Reset a TOT Reset is the delay...

Page 20: ...speaker will be activated when the selective signaling matched 3 CTCSS DCS Squelch The speaker will be activated when CTCSS DCS matched 4 Carrier Squelch The speaker will be activated when carrier wav...

Page 21: ...ing succeeds When receiving proper 5 tone signaling squelch will be activated according to the RX Squelch Mode defined by the user You can receive the call and LED flashes orange After the radio decod...

Page 22: ...1 The radio cannot be switched on or no display after switched on z Battery pack may not be installed properly Remove the battery pack and install it again z Battery power may be insufficient Recharge...

Page 23: ...Beyond the efficient communication range Settings by the Dealer Model ____________ Serial No ___________ 1 Channels List Channel Type Receiving Frequency Transmittin g Frequency CTCSS DCS Decode CTCSS...

Page 24: ...Middle Long 3 Auxiliary Function Button Settings Note...

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