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the transmission reaches the TOT; level 2 prompt 2 seconds before the TOT and so on...

In standby mode, press 

MENU + 10

. The screen will display 

“TOA”

.

Press 

MENU

 to enter the function. Press the ▲/▼ buttons to select 

OFF or 1 of the 10 levels

then press 

MENU

 to confirm. To return to the standby mode press 

EXIT

.

BEEP TONE (BEEP) --- MENU 11

If you enable this function, every time a button is pressed, you will hear a Beep tone.

We kindly suggest you to turn on this function to avoid any possible malfunctions.

In standby mode, press 

MENU + 11

.  The screen will display “

BEEP

”.

Press 

MENU

 to enter the function. Press the ▲/▼ buttons to turn 

ON/OFF

 the beep prompting 

function, then press 

MENU

 to confirm. To return to the standby mode press 

EXIT

.

NOTE:

VOICE function turned on (MENU+9),will have a higher priority than the Beep tone function.

POWER-ON DISPLAY (PONMSG) --- MENU 12

The power on display of this transceiver can be set as following:

OFF:

 all parameters fully displayed

BATT-V:

 only the current battery level is displayed

MSG:

 the screen displays “

WELCOME

In standby mode, press 

MENU + 12

. The screen displays “

PONMSG

”.

Press 

MENU

 to enter the function. Press the ▲/▼ buttons to select 

OFF/BATT-V/MSG

, then press 

MENU

 to confirm. To return to the standby mode press 

EXIT

.

BUSY CHANNEL LOCKED (BCL) --- MENU 13

This function prevents the interference of other communicating channels. If the selected channel 

has been occupied, by pressing the 

PTT

 button, the transceiver will not transmit.

In standby mode, press

 MENU + 13

. The screen will display “

BCL

”.

Press 

MENU

 to enter the function. Press the ▲/▼ buttons to select 

ON/OFF

, then press 

MENU

 to 

confirm. To return to the standby mode press 

EXIT

.

KEYPAD LOCK (AUTOLK) --- MENU 14

This transceiver has 2 types of Keypad lock available: Auto-lock and Manual-lock.

In standby mode, press 

MENU + 14

. The screen will display “

AUTOLK

”.

Press 

MENU

 to enter the function. Press the ▲/▼ buttons to select 

ON/OFF

, then press 

MENU

 

to confirm.

To return to the standby mode press 

EXIT

.

If you choose:

ON:

 the keypad lock function will be turned on. With this function enabled, the transceiver will 

lock automatically if there is no operations within  15 seconds. Keep pressed 

 for 2 seconds 

to unlock the keypad.

OFF:

 the keypad lock function will be turned off.

NOTE:

Manually lock: in standby mode keep pressed 

 for 2 seconds to lock the keypad. To unlock the 

keypad keep pressed again 

 for about 2  seconds.

RECEIVE WITH CTCSS (R-CTCSS) --- MENU 15

Set the CTCSS tones to ignore unwanted signals from other users of the same frequency. 

CTCSS tones enable the radio to communicate with the users that are tuned on the same channel 

Summary of Contents for ct 790

Page 1: ...ircuits If it appears that the Radio diffuses peculiar smell or smoke please shut off its power immedia tely and take off the charger or battery from the Radio Do not transmit without antenna Main functions Dual Band Dual Frequency Dual Display and Dual Standby Frequency Range 144 146MHz 430 440MHz Rx Tx Working mode U V V V or U U available Same channel VHF T x UHF Rx or UHF T x VHF Rx available ...

Page 2: ...n transmitting Menu Channel Reset DESCRIPTION OF THE DEVICE LCD display 1 2 4 6 3 5 16 15 7 14 13 12 11 10 9 8 Busy channel locked 1 High low power transmitting 2 Frequency selected 3 CTCSS 4 DCS 5 Split positive 6 Split negative 7 Reverse frequency 8 Dual band 9 VOX function 10 Received signal on Vice frequency 11 Bandwidth indicator 12 Battery level indicator 13 Menu channel number 14 Menu chann...

Page 3: ...ume control 26 Transmission led 27 Single dual band switch key 28 Exit 29 key Reverse frequency Scan key 30 Lock key Stopwatch timer key 31 PTT 32 push to talk key Side key1 Scan Lamp SOS CH Radio 33 Side key2 monitor long press flashlight 34 short press Ext speaker microphone jack 35 Battery latches 36 17 18 19 20 21 22 23 24 31 30 29 28 27 26 25 34 33 32 36 35 ...

Page 4: ...ng and the vice frequency is only for receiving When the vice frequency receives a signal the screen displays S SCAN key Press slightly the Scan key to set the Reverse Frequency ON OFF Keep it pressed for 2 secon ds to activate the Scan function Side key 2 Press slightly the Side key 2 to turn ON OFF the flashlight Keep it pressed for 2 seconds to enable the Squelch function 1750Hz Burst Tone Some...

Page 5: ...ignal is weak Set the same DCS codes of your group and turn on the squelch By setting the level too high you may not receive the weak signals while by setting it too low you may receive noises or undesired signals NOTE This transceiver has ten 0 9 available levels 0 means that the Squelch is turned on From level 1 to level 9 you will have different levels of noises reduction The higher is the leve...

Page 6: ...de press EXIT VOX VOX MENU 7 This function allows hands free conversations just speak in the direction of the microphone and the communication will be automatically activated As the VOX should check the voice transmission will be a little delayed and the beginning voice may not be transmitted In standby mode press MENU 7 The screen will display VOX Press MENU to enter the function Press the button...

Page 7: ...firm To return to the standby mode press EXIT BUSY CHANNEL LOCKED BCL MENU 13 This function prevents the interference of other communicating channels If the selected channel has been occupied by pressing the PTT button the transceiver will not transmit In standby mode press MENU 13 The screen will display BCL Press MENU to enter the function Press the buttons to select ON OFF then press MENU to co...

Page 8: ... confirm To return to the standby mode press EXIT NOTE This transceiver has 105 DCS groups TRANSMIT WITH DCS T DCS MENU 18 In standby mode press MENU 18 The screen displays T DCS Press MENU to enter the function Press the buttons to turn OFF this function or to select a DCS code from D023N to D754I then press MENU to confirm To return to the standby mode press EXIT NOTE This transceiver has 105 DC...

Page 9: ...each time To stop transmitting press any key If a carrier signal appears during the transmission interval the radio starts receiving After the carrier signal disappears the transceiver will resume transmitting the SOS signal auto matically Press any key to stop transmitting the SOS signal NOTE This function can be used only after have set the channel frequency band In standby mode press MENU 20 Th...

Page 10: ...el mode In standby mode press MENU 21 then press the buttons to choose the working mode Press MENU to confirm You can shift between Channel mode and Channel Name mode only after have stored at least one channel and one named channel AUTOBACKLIGHT ABR MENU 22 In standby mode press MENU 22 The screen will display ABR Press MENU to enter the function Press the buttons to enable disable ON OFF the aut...

Page 11: ... The screen displays six _ symbols Press to select the character and to confirm and go on then press again to select the se cond character and to confirm and go on After have selected the sixth characters press MENU to confirm To exit the function press EXIT The screen displays the channel name and also the channel number on the right corner of the display STORED CHANNELS MEM CH MENU 27 In Frequen...

Page 12: ...firm the screen will display RESET WAIT After have set the Reset the transceiver will auto power off and reboot again CTCSS DCS FREQUENCY SCAN SCN CD MENU 30 This function enable the scan of all CTCSS or DCS frequency codes When the transceiver is in receiving mode press MENU 30 the screen displays SCN CD Press MENU to enter the function Press the buttons to select to scan CTCSS or DCS then press ...

Page 13: ...transmit again BATTERY CHARGE Insert the AC plug into the outlet AC 90 240V The charger indicator start blinking indicating that it is in charging standby Insert the transceiver with the battery pack into the charger the RED indicator turns on indicating that the recharging begins Once the led indicator become green the battery pack will be fully charged NOTE If the battery pack is totally dischar...

Page 14: ...no sound heard Make sure the volume is not too low Make sure to have the same CTCSS and DCS codes of your group The keypad doesn t work keypad lock function hasn t been enabled In standby the radio transmit without pressing PTT VOX level has been set too low Adjust it Some functions cannot be stored Ensure to be on Channel mode In Channel mode some functions can be set only through the programming...

Page 15: ...ating Temperature 30 C to 60 C Working Mode monoband dualband Output Power VHF 5W UHF 4W Modulation F3E FM Max Frequency Deviation 5KHz Spurious Radiation 60dB Frequency Stability 2 5 ppm Receive Sensitivity 0 2uV Audio Output power 500mW Dimension 58 X 105 X 39 mm Weight 250g Specifications are subject to change without notice ...

Page 16: ...16 ...

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