Midland CT 710 User manual

CT 710
”Instruction guide
VHF/UHF TRANSCEIVER |

2 | CT710 Instruction Guide
Content: 4
Maintenance 4
Main functions 5
Description of the device 6
LCD display 6
Transceiver 8
Basic operations 10
Antenna 10
Turning on and off the power 10
Monitoring function 10
Transmitting 10
Select Mode 10
Dual-band mode 11
Channel Mode 11
Frequency Mode 12
Radio Function 12
The Flank Key Definition 12
DTMF Code 12
DTMF programmed by software 13
ANI PTT-ID Operation 13
Shortcuts Operation 14
Cloning function 14

CT710 Instruction Guide | 3
Menu function 15
Menu Operation 15
Menu Function List 16
Menu Function introduction and setting 18
Emergency Alarm 18
Setting Reverse Frequency Function 18
Scanning 18
Select scan type 18
VOX Sensitivity Setting 19
Power Setting (high or low) 19
Squelch Threshold Setting 20
Scrambler Setting 20
Backlight On/Off Setting 20
Backlight Color Selection 21
Beep On/Off 21
Keypad Lock Function Setting 21
Transmitting TOT Setting 22
Voice Function (only in English) 22
OFFSET DIFFR 22
Selecting the CTCSS tones and DCS codes 22
Setting the receiver CTCSS/DCS (R-CDC) 23
Setting the transmitting CTCSS/DCS (T-CDC) 23
+/- Frequency shift direction (for through repeaters) 23
Selecting the Frequency Step 23
Wide/Narrow Band 24
Roger Beep 24
To Save/delete a channel 24
CTCSS tone table: 50 tones 26
DCS: Digital code 105 tones 27
Table of solutions 28
Technical Specification 29

4 | CT710 Instruction Guide
Content:
• CT 710 transceiver
• Antenna
• Li-ion battery pack 1600mAh
• Belt clip
• Desktop charger with wall adaptor
• Quick Guide
If any items are missing or have been damaged during shipment, please
notify your MIDLAND dealer.
Maintenance
Your transceiver is an electronic product of exact design and should be
treated with care .The suggestions below will help you to fulfill any war-
ranty obligations and to enjoy this product for many years.
• Do not attempt to open the unit. Non-expert handling of the unit may
damage it.
• Do not store the radio under the sunshine or in hot areas. High tem-
peratures can shorten the life of electronic devices, and warp or melt
certain plastics.
• Do not store the radio in dusty and dirty areas.
• Keep the radio dry. Rainwater or damp will corrode electronic circuits.
• If it appears that the radio diffuses peculiar smell or smoke, please
shut off its power immediately and take off the charger or battery
from the radio.
• Do not transmit without antenna.

CT710 Instruction Guide | 5
Main functions
• Dual band (VHF/UHF) displayed
• Frequency band:144-146MHz & 430-440MHz (Rx / Tx).
• Working mode: UHF-VHF, VHF-VHF or UHF-UHF
• Output power: 5W VHF /4W UHF
• 128 stored channels
• Scrambler (levels can be programmed via software)
• Compander (programmable via software)
• VOX function
• 210 DCS codes and 50 CTCSS tones
• “VOICE” function
• SOS emergency function
• Channel spacing selectable between 25kHz and12,5 kHz
• Following options can be shown on the display: channel name +
channel number, channel number + frequency, channel number, or
frequency
• Inverted frequency function
• Scan function
• FM radio receiver
• Frequency Step: 5 kHz, 6.25 kHz, 10 kHz, 12.5 kHz, 25 kHz,
• Selectable tx power: high (4-5W)or low (1W)
• Li-Ion battery pack 1600mAh
• Frequency Offset: 0-69.950 MHz
• Shift repeater
• ”Busy channel lockout”frequency (programmable via software)
• Tx signal strength indicator on the display
• Low battery vocal indication
• Roger Beep tone at the beginning or end transmission
• TOT (Time out timer)
• Keypad lock
• Scan of frequencies with CTCSS/DCS
• Scan priority
• DTMF
• Reset of functions and channels
• 1750 / 1450 / 2315 tone to connect to repeaters (programmable via
software)
• Jack for external speaker/mike: 2 Pin KENWOOD type

6 | CT710 Instruction Guide
Description of the device
LCD display
Indicators:
DTMF codes
FM radio
Vox function
Inverted frequency (reverse)
Frequency offset +/-
Channel spacing wide/narrow
ID code activation
Battery level
Emergency call
Scan
Priority scan

CT710 Instruction Guide | 7
Compander
CTCSS tone
DCS code
Keypad lock
RSSI - Potenza segnale ricevuto/trasmesso
Scrambler
Menu/channel number
High/middle/low power transmitting
Band A selected
Band B selected
Frequency

8 | CT710 Instruction Guide
Transceiver
1. Power switch/volume control
2. Encoder Knob
3. Antenna
4. LCD display
5. MENU
6. ENTER (To enter the menu functions and confirm your selections)
7. Alphanumerical keypad
8. LOCK (keypad lock)
9. T-R (Frequency inversion activation)
10. VFO/MR (to change the radio modes)
1
2
1
1
6
5
3
8
4
10
7
9

CT710 Instruction Guide | 9
A PTT (push to talk) key
B Flank key1: A/B frequency selector - single or dual band -, FM radio
C Flank key2: 1750/1450/2315 tone (programmable) or DTMF (pro-
grammable)
D Ext. speaker/microphone jack
EBattery latches
A
B
C
D
E

10 | CT710 Instruction Guide
Basic operations
Antenna
Insert the base of the supplied antenna into the SMA connector by rota-
ting the antenna clockwise, then make sure that it has set down. Take out
the antenna from the base by counter clockwise rotation until pull out it
from SMA connector.
Turning on and off the power
If you want to turn on the power, rotate the PWR/VOL (turning on) knob
clockwise until a beep sound is heard. All icons and frequencies appear
on the screen. (Due to the automatic squelch function, the speaker will
not send out any sound before receiving a call). You can adjust your desi-
red volume by turning the button. If you want to turn off the power, turn
PWR/VOL knob in counter clockwise rotation until a beep is heard. All
icons and frequencies disappear from the display.
Monitoring function
If you hold down the ENTER key for two seconds and adjust your desired
volume by PWR/VOL knob, you can directly hear a background noise wi-
thout waiting to receive any signals. If you press the PTT key, the squelch
will turn off.
Transmitting
Press the PTT key then speak to the radio in ordinary tone. The transmit-
ting indicator lights up red while the PTT key is pressed.
If you are too close to the microphone or your voice is too loud, the re-
ception won’t sound clear.
Release the PTT key so as to listen a response from your partner.
Select Mode
You can select four different operative modes:
1. Dual-band mode
2. Single band mode
3. Channel mode

CT710 Instruction Guide | 11
4. Frequency mode.
Press flank key1 for two seconds to enter or exit the dual-band or single-
band mode.
Dual-band mode
When the dual-waiting mode is selected, the display will show two bands
A or B. When the band A is displayed, it means that frequency A can recei-
ve and transmit, but the other frequencies on the B band can only receive
and cannot transmit. Same thing if the band B is displayed. To switch to A
or B band press briefly flank key1.
Single-band mode
Press flank key1 for two seconds. The display will show:
R 145.025
T 145.025
Now the radio works in single band mode only. To switch from one band
to another, press flank key1.
Channel Mode
Press the VFO/MR key to switch to channel mode. Different options can
be displayed:
• Display the current channel number
CH-001 the current channel is the first channel.
• Display the current channel name and channel name
CH-001 current channel name in use
(in this case channel 1).
The name is programmable via software.
001 current channel
• Display the receive / transmit frequency and the current channel
R 145.025 receive frequency
T 145.025 transmit frequency
001 current channel.

12 | CT710 Instruction Guide
Frequency Mode
‘SINGLE BAND’
R 430.02500 receive frequency
T 430.02500 transmit frequency
‘DUAL BAND’
A 145.025
B 430.025
Press flank key1 for two seconds to enter or exit the dual-band or single-
band mode.
Radio Function
This radio comes with the FM function.
Press MENU and then flank key 1 or 2 to enter the radio status.
To select your favorite radio frequency to listen directly, turn the encoder.
Radio stations can be programmed by software and push the VFO/MR to
switch to the programmed radio frequencies.
To exit the radio encoder, press the MENU and then flank key 1 or 2.
The Flank Key Definition
By using the programming software, you can define the flank key 2 as:
1. DTMF code call
2. send 1450Hz code
3. send 1750Hz code
4. send 2315Hz code
When defined as one of the above, push the flank key to activate the
selected function.
DTMF Code
This radio has the DTMF function.
In the transmitting status, press the numbers on the keypad or the flank
keys and the corresponding DTMF code will be issued. The DTMF code
issued by the key buttons are as follows:
MENU stands for A, ENTER stands for B, VFO/MR stands for C, FM stands
for D.

CT710 Instruction Guide | 13
MENU → AVFO/MR → C
ENTER → B Tasto laterale 2 → D
DTMF programmed by software
(see the instructions of the Programming software)
Once the optional call signaling DTMF function is programmed on the
desired channels, press the flank key2 and the display will show DTMF.
Now you can input the 8-digit DTMF codes.
If the input number is wrong and you want to change it, rotate the en-
coder.
Counterclockwise rotation delete one by one, clockwise to exit the DTMF
function. Input your desired number, press PTT key to make a call. When
your partner receives the correct code, the programmed DTMF function
or the radio identification will be done.
ANI PTT-ID Operation
ANI means Automatic Numbering Identification.
You can set an automatic number identifier visible from the radio’s di-
splay of your partner each time you send a call signal. This function must
be activated on both radios and must be programmed by software (see
the instructions of the Programming software).

14 | CT710 Instruction Guide
Shortcuts Operation
MENU + 0ANI setting
MENU + 1scan mode
MENU + 2priority scan mode (only in VFO mode)
MENU + 3VOX Sensitivity setting
MENU + 4output power setting
MENU + 5SQ adjust
MENU + 6scrambler on/off setting
MENU + 7backlight on/off setting
MENU + 8backlight color setting
MENU + 9beep on/off
MENU + #receive and transmit CTCSS/DCS setting
MENU + *S-D +/- potential difference setting
Cloning Function
This function allows to copy all data/settings (programming) from a radio
to another one, without using PC. Turn off both radios and connect the
optional cloning cable to the radio‘master’(radio to be copied) and to the
radio ‘slave’ (radio to program). Turn on the radio ‘master’ while keeping
pressed the PTT button at the same time. The display will show CLONE?.
Press PTT once. Turn on the radio‘slave’ within 10 seconds. The display of
the radio ‘slave’ will show PC and the led on the front will start flashing
green. At the end of this procedure, the radio ‘slave’ will be rebooted and
will turn on with the new programmed data. During the programming,
the radio ‘master’ will show CLONE on the display and the green led will
blink. When all data have been copied, END will appear on the display.
Repeat the same procedure for further programming procedures.

CT710 Instruction Guide | 15
Menu function
Menu Operation
To enter the Menu functions, follow this procedure:
Press MENU to enter the menu mode.
Turn the encoder to select the menu.
Press ENTER into the menu mode to set the desired function: you can
press the number key directly, but for some functions (such as TOT, Voice,
Frequency offset) you have to rotate the encoder to find the desired op-
tion. Press ENTER to confirm the selected setting.
When you have completed all the setting, press VFO/MR to exit the Menu
mode.

16 | CT710 Instruction Guide
Menu Function List
Menu display Instruction
Setting contents
1SCAN Channel or frequency scan
CHANNEL OR FREQUENCY SCAN
2PRI Priority Channel Scan
PRIORITY CHANNEL SCAN
3VOX VOX Sensitivity
OFF~9
4POW Transmission power
HIGH/LOW
5SQL Squelch threshold setting
0~9
6SCRM Scrambler
OFF/ON
7LED Backlight On/Off setting
OFF/ON/AUTO
8LIGHT Backlight color select
BLUE/ ORANGE/PURPLE
9BEEP Beep
OFF/ON
10 ANI Automatic number identification
programmable via software
OFF/ON
11 KEYBO Keypad lock
MANUAL/AUTO
12 TOT Time Out Timer
OFF~270
13 SCANS Scan selection
CO/TO/SE
14 VOICE Voice prompts
OFF/ENG
15 DIFFR Offset
0-38.000(VHF) - 0-69.950(UHF)
16 C-CDC Receiving and transmitting CTCSS/DCS
OFF-254.1/D023-D754 I/N
17 R-CDC Receiving CTCSS/DCS
OFF-254.1/D023-D754 I/N
18 T-CDC Transmitting CTCSS/DCS
OFF-254.1/D023-D754 I/N
19 S-D Potential difference
+/-/0
20 STEP Channel stepping
5K/10K/6.25K/12.5K/25K
21 N/W Narrow/wide bandwidth
WIDE/NARROW
22 ROGER Roger Beep
ROG ON/ROG OFF

CT710 Instruction Guide | 17
Menu Function List
Menu display Instruction
Setting contents
1SCAN Channel or frequency scan
CHANNEL OR FREQUENCY SCAN
2PRI Priority Channel Scan
PRIORITY CHANNEL SCAN
3VOX VOX Sensitivity
OFF~9
4POW Transmission power
HIGH/LOW
5SQL Squelch threshold setting
0~9
6SCRM Scrambler
OFF/ON
7LED Backlight On/Off setting
OFF/ON/AUTO
8LIGHT Backlight color select
BLUE/ ORANGE/PURPLE
9BEEP Beep
OFF/ON
10 ANI Automatic number identification
programmable via software
OFF/ON
11 KEYBO Keypad lock
MANUAL/AUTO
12 TOT Time Out Timer
OFF~270
13 SCANS Scan selection
CO/TO/SE
14 VOICE Voice prompts
OFF/ENG
15 DIFFR Offset
0-38.000(VHF) - 0-69.950(UHF)
16 C-CDC Receiving and transmitting CTCSS/DCS
OFF-254.1/D023-D754 I/N
17 R-CDC Receiving CTCSS/DCS
OFF-254.1/D023-D754 I/N
18 T-CDC Transmitting CTCSS/DCS
OFF-254.1/D023-D754 I/N
19 S-D Potential difference
+/-/0
20 STEP Channel stepping
5K/10K/6.25K/12.5K/25K
21 N/W Narrow/wide bandwidth
WIDE/NARROW
22 ROGER Roger Beep
ROG ON/ROG OFF

18 | CT710 Instruction Guide
Menu Function introduction and setting
Emergency Alarm
There are two types of alarms:
1. Press flank key 2 and flank key 1 at the same time: the radio will go to
emergency alarm and will send out, at the same time, the alarm sound
and ANI to your partner (if programmed). The alarm stays active till
the PTT is pressed.
2 By means of the programming software, an emergency channel can
be specially set. To activate it, press briefly # T/R: now you can transmit
on the selected emergency frequency. To exit, press VFO/MR.
Setting Reverse Frequency Function
In channel/Frequency mode, hold down #for two seconds until “T*R?”
appears. When “REV”is displayed on the LCD, the Reverse frequency
function is enabled. To deactivate this function, hold down # for two
seconds.
Scanning
The Scan version is very useful to monitor the channels before transmit-
ting.
Select scan type
Press MENU and rotate the encoder to item 13, the screen will display
“013 SCANS?”.
Press ENTER: now you are into the scanning mode selection.
You have three types of scanning to choose amongst: TO, CO, SE.
Time-operated scan (TO)
When the radio detects a signal it will stop scanning; the status will re-
main about 5 seconds but the radio will continue to scan even if the si-
gnal is still there.
Carrier-operated scan (CO)
The radio will stop scanning when detects a signal and remains on the
same frequency until the signal is missing.
Search Scan (SE)
When the radio detects a signal, it remains on that channel and stop

CT710 Instruction Guide | 19
scanning.
Frequency or channel scan
In channel /frequency mode, press MENU and 1SCAN: the radio will scan
from current channel through all the channels and, whenever any signal
is detected, the radio will stop scanning for 8 seconds. Then press PTT to
transmit: it will then continue to scan after 8 seconds.
Press any key except PTT to end scanning: the radio will return to the
channel or frequency in use before starting the scan function.
Priority channel scan
Priority scan means that the radio starts scanning from the priority chan-
nel first and then scans the other channels. For example, if the priority
channel is 1, the scan will be 1-2;1-3;1-4;…….
Procedure:
In channel mode ,press MENU and 2PRI: the radio will scan priority chan-
nel, whenever any signal is detected, the radio will suspend the scan for
8 seconds, then press PTT key to transmit. It will then continue to scan
after 8 seconds.
Press any key except PTT key to end scanning.
VOX Sensitivity Setting
This function allows hand-free communications: you activate the
transmission when you speak to the microphone without pressing the
PTT button. It stops transmitting automatically once you stop speaking.
The sensitivity can be adjusted in different levels that can be set upon
your needs.
Procedure:
In Frequency mode, press MENU and 3VOX keys: the screen will display
“003 VOX?”.
Press ENTER and the display will show “VOX OFF”.
To adjust the desired sensitivity level, press any number key (0-9) on the
keypad or rotate the encoder.
To confirm your selection press ENTER and VFO/MR to exit.
Power Setting (high or low)
With this function you can select the power level, you can choose betwe-
en High (H) and Low (L).

20 | CT710 Instruction Guide
In channel/frequency mode, press MENU and 4PWR: the screen will di-
splay ”004 POW?”.
Press ENTER and the display will show ”POW L”(low power) or ”POW H”
(high power): turn the encoder knob to select the desired power level.
To confirm your selection press ENTER and VFO/MR to exit.
Squelch Threshold Setting
This function turns on the Squelch when the signal is strong; the Squelch
will stay off when the signal 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 level, the louder will be the Squelch.
Procedure:
Press MENU and 5SQL: the screen will show “005 SQL?”.
Press ENTER and the display will show ”SQL 5”(Factory Settings ” SQL
5”).
Press any number (0-9) on the keypad or rotate the encoder to select the
desired squelch level.
Press ENTER as confirmation and press VFO/MR to exit.
Scrambler Setting
The scrambler is designed to protect communications.
This feature prevents parties of other networks from hearing and under-
standing voice communications.
Procedure:
Press MENU and 6SCR key and the display will show “006 SCRM?”.
Press ENTER: you will see on the display “ON”(scrambler on), “OFF”
(scrambler off).
Turn the encoder to select on/off and press ENTER to confirm; press VFO/
MR to exit.
Backlight On/Off Setting
In channel/frequency mode, press MENU and 7LED.