Datasheet CT310 Specification

CT310

DUAL BAND VHF/UHF TRANSCEIVER

› INSTRUCTION MANUAL

SPECIAL FEATURES

200

Memory
channels

FM radio 3 colors display

Index

Unpacking 1

Supplied Accessories 1

Maintenance 2

Main features 3

Programming software 3

Charging Operation 4

Battery Charger Type 4

Charging notes 4

How to Charge 4

How to Store the Battery 6

Warning 6

Installation & Connection 7

Installing / Removing the Antenna 7

Installing / Removing the Belt Clip 7

Installing Optional Speaker / Microphone 7

Getting acquainted 8

LCD Display 9

Turn the Radio On & O 10

Adjusting Volume 10

Switch between Main band and Sub band 10

Switch between Channel mode and VFO mode 10

Channel Adjusting 10

Frequency Adjusting 11

Frequency Input by Keypad 11

Channel Input by Keypad 11

FM Channel Searching 11

Receiving 12

Transmitting 12

Emergency Alarm 12

Side key PF2 function instruction 13

Edit channel 13

Delete channel 14

Programming scan 14

Turn On/ O FM Radio 14

CTCSS/DCS Setup 15

CTCSS/DCS Scan 15

Oset Frequency Direction Setup 15

Frequency/Channel Scan 16

Channel Scan Skip 16

Frequency Reverse 16

TX Power selection 17

Stopwatch function 17

DTMF code Transmit and Enquiry 17

Keypad lock 17

Single-band Switching 18

Function Menu Setup 18

Function Menu setup 20

Display Mode Setup 26

Resume Factory Default 26

Technical specification 27

CT310 transceiver will provide you with reliable, clear and ecient
communication service. This sturdy and reliable transceiver introduces
innovative DSP digital signal processing technology, high degree integration
and it is including plenty of professional functions.
The transceiver is including plenty of TX, RX channels, as well as UU, VV and
UV standby modes which is able to realize cross band function, 51 groups of
CTCSS encode/decode and 1 group of user-defined CTCSS encode/decode,
1024 groups of DCS encode/decode, 5TONE encode/decode, DTMF
encode/ decode, built-in FM radio functions, etc..
It is a meticulous build functional and Multi frequency band radio for radio
amateur.

Unpacking

Please carefully unpack the transceiver. We recommend that you identify all
items before discarding the packing material.
If any items are missing or have been damaged during shipment, please contact
with dealers immediately.

Supplied Accessories

• CT310 transceiver with belt clip

• Li-Ion battery pack 7.4V 1200mAh

• Desktop charger

• Wall adaptor

CT310 Instruction Manual | 1

Maintenance

Your Two Way Radio is an electronic product of exact design and should be
treated with care.
The suggestions below will help you to fulfill any warranty obligations and to
enjoy this product for many years.

• Do not attempt to open the radio for any reason! The radio’s precision
mechanics and electronics require experience and specialized equipment;
for the same reason, the radio should under no circumstances be realigned
as it has already been calibrated for maximum performance. Unauthorized
opening of the transceiver will void the warranty.

• Do not store the Radio under the sunshine or in hot areas.

• High temperatures 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 diuses peculiar smell or smoke, please shut o
its power immediately and take o the charger or battery from the radio.

• Do not transmit without antenna.

2 | CT310 Instruction Manual

Main features

• VHF/UHF dual band and channel displayed

• Operating modes: UHF/VHF, UHF/UHF, VHF/VHF

• Output power 5W UHF/VHF

• 200 memory channels

• 51 CTCSS tones and 1024 DCS codes

• 1750/1450/1000/2100Hz repeater tones

• SOS Emergency function

• FM radio receiver (76-107.95MHz)

• VOX, Scan, frequency band scan

• Mode selection: channel/frequency/name

• Talk Around feature (TX = RX)

• Frequency step: 2.5/5/6.25/10/12.5/20/25/30/50KHz

• Adjustable frequency oset: 0 – 69.9975MHz

• Dual transmission (PTT and SUB PTT keys)

• Stop Watch

• Automatic power o 30min/3 hrs

• Li-Ion battery pack 7.4V 1200mAh

• 2pin Kenwood accessory jack

Programming software

Thanks to the Midland Programming software PRG-G10, it is possible to
increase the performance of your radio or to reduce its functionality by
enabling or disabling some features.
For further information, please consult the Programming software manual.
When programming the transceiver, read the factory initial data first, then
rewrite the frequency and signaling etc., otherwise errors may occur because
of dierent frequency band etc.

CT310 Instruction Manual | 3

Charging Operation

The battery is not charged at the factory, please charge it before use. Charge
the battery for the first time after purchase or extended storage (more than
2 months) may not bring the battery to its normal operating capacity. After
repeating fully charge/discharge cycle for two or three times, the operating
capacity will reach the best performance. The battery life is over when its
operating time decreases even though it is fully and correctly charged. Replace
the battery.

Battery Charger Type

Please use the original charger by Midland; other models may cause explosion
and injure people. After installing the battery, if the radio red light twinkles, it
means that the battery is discharged; please charge it. .

Charging notes

• After the battery is charged to its highest capacity, don’t charge anymore.

• Do not short-circuit the battery terminals or throw the battery into fire.

• Never attempt to remove the casing from the battery pack.

• Please turn the power o before charging. It will aect the battery life when
charging the power-on radio.

• If the radio still shows low power after the normal charge, please change
the battery.

• The average usage time of battery pack is 11 hours. Average usage time is
5% for transmitting, 5% for receiving and 90% for standby.

How to Charge

1. Plug the AC adaptor into the AC outlet, then plug the cable of AC adaptor

into the DC jack, the indicator lights orange for 1s and turns into GREEN-

--waits to charge.

2. Slide the battery or transceiver with battery into the charger; make sure the
battery terminals are in contact with the charging terminals well. LED turns
into twinkling RED---pre-charging begins.

3. Pre-charging for about 5 minutes, LED twinkles stop then charging begins.

4. It takes about 4 hours to fully charge the battery, when LED turns into

GREEN — fully charged.

4 | CT310 Instruction Manual

NOTE: When charging a power-on transceiver equipped with battery, the LED
will not turn into green to show the full charge status; it will be indicated only
when you turn o the transceiver: because when the transceiver is turned on, it
would consumes energy and the charger cannot detect when the battery has been
fully charged.

Charging Process:

Standby (self-examine orange lights
1 second when power on)

Pre-charging (pre-charging stage) Red light twinkles for about 5

Charging RED light lightens for about 4 hours

Full charged Green light

LED Indicator:

STATUS LED

Self-examine when power on Orange (for 1 second)

(No battery) Green

Green light

minutes

Pre-charging

Charge normally Red

Full Charged Green

Trouble Red twinkles for a long time

NOTE: Trouble means battery heating, battery short-circuit or charger short­circuit.

CT310 Instruction Manual | 5

Red light twinkles for 5 minutes

Charging Prompt

1. Self-examination: When charging, ORANGE light twinkles for 1 second

and goes out. That means the charger has passed its self-examination and
it can charge the battery normally. If the light remains orange or the red
light twinkles, which means the charger can not pass its self-examination
or charge the battery.

2. Trickle pre-charging: When the battery has been inserted into the charger
and red light twinkles (it means the remnant voltage is low), the charger
trickle charges the battery (pre-charging status), until the battery reaches
a certain electric quantity, the charger automatically turns into normal
charging. And if the red light stops twinkling, (it means the remnant voltage
meets a certain electric quantity), the charger will charge the battery
normally.

NOTE:The time for Trickle pre-charging does not exceed 30m. After 30m, if
the red indicator is still twinkling, it means it is unable to charge battery. Please
kindly check battery and charger.

How to Store the Battery

If the battery needs to be stored for a long period, the battery should be
removed from the radio. Its state of charge should be 50-100% charged.
It should be kept in low temperature, dry environment.
Kkeep away from hot places and direct sunlight.

Warning

• Do not short circuit battery terminals.

• Never attempt to remove the casing from the battery pack.

• Never assemble the battery in dangerous surroundings, spark may cause
explosion.

• Do not put the battery in hot environment or throw it into fire, it may also
cause explosion.

6 | CT310 Instruction Manual

Installing / Removing the Li-ion Battery

Match the two grooves of the battery pack with the corresponding guides on
the back of the transceiver and push.

1. Press the battery pack and transceiver firmly together until the release
latch on the top of the transceiver locks. After hearing a “click” sounds, the
battery has been locked.

2. To remove the battery pack, slide the  release latch and remove the pack
away from the transceiver.

Installation & Connection

Installing / Removing the Antenna

Installing the Antenna:

Screw the antenna into the connector on the top of the transceiver by holding
the antenna base and turning it clockwise until secure.

Removing the Antenna:

Turn the antenna counterclockwise to remove it.

Installing / Removing the Belt Clip

Installing the Belt Clip:

Place the belt clip to the corresponding grooves on the back of the transceiver,
and then turn the screws clockwise.

Removing the Belt Clip:

Turn the screws counterclockwise to remove the belt clip.

Installing Optional Speaker / Microphone

Unveil the MIC-SP jack cover and then insert the Speaker/ Microphone plug
into MIC-SP jack.

Note: The transceiver is not completely waterproof while using the Speaker/
Microphone.

CT310 Instruction Manual | 7

1 FM

2

TONE3 T.SCA

A

FUNC

4+/-

5

SCAN6 SKIP

B

MAIN

7

REV

8

SET9 HI/LO

C

V/M

*

S.W

0

DTMF

#

ENT

D

ESC

.

.

75
25
75
25

CT DCS R PRI VOX

N

T S

HL

FM

TDR

BUSY

MIC SP

MIC SP

1

2 3

4

7

10

8

T S

CT DCS R PRI VOX

9

5

6

8 | CT310 Instruction Manual

TDR

.

FM

.

HL

BUSY

1 FM

4+/-

7

REV

*

S.W

2

TONE3 T.SCA

SCAN6 SKIP

5

8

SET9 HI/LO

0

DTMF

N

75
25
75
25

A

FUNC

B

MAIN

C

V/M

D

ESC

ENT

#

MIC SP

Getting acquainted

1. Antenna

2. Selection Knob

3. Power/Volume Switch. Rotate it clockwise to turn on the transceiver; rota-

te it anticlockwise till you hear a “click” to turn it o. When the transceiver is
turned on, rotate the knob clockwise to increase the volume, anticlockwise
to reduce the volume.

4. TX/RX indicator. RX is GREEN, TX is RED

5. LCD display. Displays current frequency/channel and operations

6. Keypad. Enters desired frequency/channel or operations by keypad

7. PTT key. Press PTT key to talk, release this key to receive.

8. PF1 key: multifunction button. The functions are selectable.

9. PF2 key: multifunction button. The functions are selectable.

10. Speaker/Microphone jack: suitable for external accessories and for pro­gramming software

CT310 Instruction Manual | 9

1 FM

2

TONE3 T.SCA

A

FUNC

4+/-

5

SCAN6 SKIP

B

MAIN

7

REV

8

SET9 HI/LO

C

V/M

*

S.W

0

DTMF

#

ENT

D

ESC

.

.

75
25
75
25

CT DCS R PRI VOX

N

T S

HL

FM

TDR

BUSY

MIC SP

LCD Display

2 3 4 5 6 7 8 9 10

1

16

17

T S

CT DCS R PRI VOX

TDR

. 

FM

. 

HL

BUSY

N

75

25

25
75

11

1215

14 13

On the LCD display screen, you will see various icons which show the selected
functions.

1. Function (FUNC)

2. CTCSS tone selected

3. Optional signalling (DTMF)

4. DCS code selected

5. Frequency oset

6. Frequency reverse

7. VOX function

8. Scan skip

9. Narrow band

10. Battery level

11. Menu number, channel number

12. Keypad lock

13. Received signal strength

14. Busy channel

15. Hi/low power selection

16. FM radio

17. The arrows show the channel/frequency in use

Note: Battery capacity indicator (full); No power, replace battery pack
or charge it

10 | CT310 Instruction Manual

Basic Operations

Turn the Radio On & O

In power-o state, please turn POWER/VOLUME clockwise to turn on the
transceiver.
In power-on state, please turn POWER/VOLUME anticlockwise to turn o
the transceiver.

Adjusting Volume

In power-on state, turn POWER/VOLUME to adjust the volume.
Clockwise-up, anticlockwise -down.
When adjusting the volume, press the key programmed as Squelch O to
monitor the current volume firstly.

NOTE: Press the side key programmed as Squelch O Momentary to monitor the
background noise. Turn POWER/VOLUME to control the volume. The desired
volume can be adjusted more correctly when communicating with the other
parties.

Switch between Main band and Sub band

In standby mode, press the MAIN key to switch the channel between the Main
band and Sub band. The arrow indicates the current operational channel.

Switch between Channel mode and VFO mode

In standby mode, press the V/M key to set the main band as Channel mode or
frequency mode(VFO).

Channel Adjusting

When the transceiver is set in Channel mode or FM radio channel mode,
rotate the channel switch to select the channel. Rotate the channel switch
clockwise to enter the downward channel, counterclockwise to enter the
upward channel.

NOTE: In transceiver mode, the arrow indicates the main band channel. If there
is a null channel between two channels, the transceiver will skip it and will enter
into the next channel directly.

CT310 Instruction Manual | 11

Frequency Adjusting

When the transceiver is set in VFO mode or FM radio frequency mode, rotate
the channel switch to set the frequency. Rotate the channel switch clockwise
to increase the frequency, counterclockwise to decrease the frequency. Every
rotate can add or reduce one stepping value.

NOTE: Channel step:2.5K, 5K, 6.25K, 10K, 12.5K, 20K, 25K, 30K and 50KHz
in total 9 for optional. FM radio step frequency is 50K.

Frequency Input by Keypad

In frequency mode or FM radio frequency mode, you can directly enter the
frequency through the keypad. When your transceiver is under Channel mode,
press the V/M key to switch into VFO.

NOTE: When the transceiver is in Channel mode, it shows the current channel
number on the right of the main frequency.

Enter the desired frequency by keypad.

NOTE: The frequency input of main channel or FM radio is relevant to the
stepping and transceiver frequency range. If the frequency setup is beyond the
range or does not match with the step size, the input is unavailable. Under the FM
radio mode, the frequency step size input by numeric keys is 100k.

Channel Input by Keypad

In channel mode or FM radio mode, you can switch to the desired channel
by entering three numbers (001-199). If the entered channel is not in edited
channel range, the transceiver will emit a beep to warn about the wrong input
and return to the current channel. For example, entering 001 is channel 1, 030
is channel 30, 125 is channel 125.

FM Channel Searching

When the transceiver is in FM radio mode, press the FUNC key; the LCD
displays icon, then press SCAN to start the FM searching. When one
station is sought, the LCD displays the current station frequency.

12 | CT310 Instruction Manual

Squelch O Momentary / Squelch O

Side key PF2 can be setup for Squelch o Momentary or Squelch o function
by programming software.

1. Squelch o: Press PF2; the squelch will be enabled and the background
noise can be heard. Press PF2 again; the squelch will be mute.

2. Squelch o Momentary: Press and hold PF2; the squelch will be enabled
and the background noise will be heard. Release PF2, the squelch will be
mute.

Receiving

When your transceiver is called bythe other party, the green LED light will be
on and the arrow icon will flash, you can hear the calling.

NOTE: You may not receive the calling when your transceiver is set at high
squelch level. If current channel is programmed with decode signal, only the same
signaling call can be heard.

Transmitting

According to PF2 setup in programming software, hold the PF2 key to monitor
the channel to ensure it is not busy, press PTT and talk

NOTE: When press and hold the PTT key, transceiver is transmitting if the red
LED light is on. Release PTT to receive calls.

Emergency Alarm

In standby mode, press and hold PF1 which is programmed with ALARM
function until LCD displays “ALARM”: the Emergency alarm function is
activated. This transceiver has 4 Alarm modes available, which can be setup in
programming software. Power o the transceiver to exit Alarm.

CT310 Instruction Manual | 13

Side Key PF1 function instruction

1. VOLT: Battery capacity inquiry: Under standby, press PF1, LCD displays

current battery capacity, press this key again to exit.

2. CALL: Transmit the prestored DTMF/5TONE Encode signal in channel.

3. ALARM: Long pressing PF1, LCD display “ALARM”, transceiver will

enable the preset alarm function.

4. SUBPTT: Press PF1, transceiver will transmit at sub-band frequency.

5. Transmit tone pulse frequency: Press and hold PTT, then press PF1 to

transmit selected tone pulse frequency.

NOTE: The tone pulse frequency can be set to 1750Hz, 1450Hz, 1000Hz or
2100Hz in Function menu No.28 TBST.

Side key PF2 function instruction

1. Squelch o: Press PF2; the squelch circuit is enabled and the background
noise will be heard. Press PF2 again, squelch circuit will be mute.

2. Squelch o Momentary: Press and hold PF2, squelch circuit is not mute,
back-ground noise can be heard. Release PF2, squelch circuit is mute.

3. Transmit DTMF signaling: Press and hold PTT, then press PF2 to transmit

the selected DTMF signaling.

NOTE: The optional signaling of current channel is DTMF or no optional
signaling, the operation will transmit the DTMF signaling.

4. Press and hold PF2 to turn on the transceiver, until transceiver emits “DU”
beep, the transceiver enters into general functions setup.

Edit channel

1. In frequency mode (VFO), enter the desired frequency and settings, press
FUNC key, the top left corner of LCD displays icon, press V/M key to

switch into channel mode, channel number flashes.

2. Rotate channel switch to select desired editing channel number.

3. Press FUNC key, the top left corner of LCD displays icon, press and

hold V/M key until transceiver emits “DUDU” beep, channel is stored
successfully.

Delete channel

1. Under standby state, press FUNC, the top left corner of LCD displays
icon, press V/M to switch into channel mode, channel number flashes.

2. Rotate the channel switch to select the channel number you want to delete.

3. Press FUNC, the top left corner of LCD displays icon, press and hold
V/M until the transceiver emits “DUDU” beep and clear up frequency

information of current channel, deletion is successful.

NOTE: This process can be applied for deleting FM radio channels.

Programming scan

Setup the frequency of L1 channel, U1 channel, L2 channel and U2 channel
will realize VFO frequency scanning border limited. L1 & L2 are the starting
frequencies, U1 & U2 are the last frequencies.
When the VFO frequency is between L1 ~ U1 or L2 ~ U2, the transceiver will
scan the frequencies between L1 ~ U1 or L2 ~ U2. When the VFO frequency
is lower than L1 or L2, transceiver will scan frequencies higher than L1 or L2.
When VFO frequency is higher than U1 or U2, transceiver will scan frequencies
higher than U1 or U2.

1. In VFO mode, enter the desired frequency and relative setup, press
FUNC, the top left corner of LCD displays icon, then press V/M switch

into channel mode, the channel number flashes.

2. Rotate channel switch to choose the desired channel number.

3. Press FUNC, the top left corner of LCD displays icon, then press V/M
until the transceiver emits “DUDU” beep, channels are saved successfully.

NOTE: To make this setup, L1 and U1 must be in the same frequency band. L2 and
U2 must be in the same frequency band.

Turn On/ O FM Radio

In standby mode, press FUNC, the top left corner of LCD displays icon,
then press FM: LCD displays “FM ON” and the current FM radio frequency.
The FM radio function is activated. You can mute the radio by pressing MAIN,
the LCD displays “FM OFF”.
When FM radio is on, press FUNC, the top left corner of LCD displays
icon; press FM to turn o the FM radio and return to the transceiver mode.
Re-start transceiver also can exit FM radio function.

NOTE: To use the FM radio function, you must set RADIO function on 30th
menu, otherwise the FM radio function cannot be used normally.

CT310 Instruction Manual | 15

CTCSS/DCS Setup

In standby mode press FUNC, the top left corner of LCD displays icon,
press TONE, the LCD displays “CT” icon, it means a CTCSS signal can be
added to the current channel. Repeat the above operation, LCD displays
“DCS” icon, it means a DCS code can be added to the current channel.
Repeat the above operation, “DCS” icon disappears, current channel without
CTCSS/DCS signal.

CTCSS/DCS Scan

Press FUNC, the top left corner of the LCD displays icon, press TONE to
enter into the CTCSS/DCS scan. Rotate the channel switch to change the
scan direction. When the scan detects a CTCSS/DCS signaling, it will stay 5
seconds and then re-starts the scanning. Press any other keys except FUNC,
S.W, #/ENT key to exit.

NOTE: This function cannot be done when the transceiver works in professional
mode or the arrow directed channel does not indicate a CTCSS/DCS signaling.
In current channel, if signaling set as CTCSS, it will scan CTCSS, if sets as DCS,
will scan DCS.

Oset Frequency Direction Setup

Under standby mode, press FUNC, the top left corner of LCD displays
icon, press */- to choose the oset frequency direction. There are 3 options,
Positive oset, Minus oset, shut o oset.

1. (+) Positive oset: Indicates that the TX frequency is higher than the RX
frequency. When the reverse function is enabled, the RX frequency is
higher than the TX frequency.

2. (-) Minus oset: Indicates that the TX frequency is lower than the RX
frequency. When the reverse function is enabled, the RX frequency is
lower than the TX frequency.

3. None: Indicates shut oset o.

In frequency mode (VFO) or channel mode, press FUNC, then press */- to
choose a positive oset direction(+), minus oset direction (-) , shut oset o
one by one (Please refer to the oset frequency setup).

NOTE: This function is invalid in professional transceiver mode.

16 | CT310 Instruction Manual

Frequency/Channel Scan

Under corresponding mode, press FUNC, the top left corner of the LCD displays

icon, then press SCAN to start the frequency scan or channel scan.

1. Frequency Scan
In VFO mode, the frequency scan is available. This function is used for
monitoring signal of various communication frequency by transceiver
‘step’ setup, press numeric key or ESC key to exit.

2. Channel Scan
Under channel mode, this function is used for monitoring signal of each
channel in this mode. Press numeric key or ESC to exit.

NOTE:
 Frequency scan is of all bands scan, it scans upwards as your STEPPING

setting.

 In channel scan, the skipped channel is not in the line of scanning. Scan

upwards as per channel no. (please refer to channel scan skip).

 Frequency/channel scan can change the scan direction by rotating the channel

switch, when find a matching carrier wave and signaling, the transceiver will
stay 5 seconds then re-starts scanning. (Please refer to scan setup)

Channel Scan Skip

In channel mode, press FUNC , the top left corner of LCD displays icon,
then press SKIP to set the current arrow directed channel as Channel scan
skip. Repeat the above operation to cancel the channel scan skip.

1. LCD displayed “S” means the current channel will not be scanned.

2. “S “ icon disappeared means the current channel will be scanned.

Frequency Reverse

In standby mode, press FUNC, the top left corner of LCD displays icon,
then press REV to set the arrow indicating the channel as frequency reverse,
repeat above operation to turn o the frequency reverse.

1. When LCD displays “R” icon, it means that the arrow shows the channel
of the frequency reverse function; the TX frequency and RX frequency is
interchanged, as well as the CTCSS/DCS (if set).

2. When “R” icon disappears, it means reverse function is deactivated.

CT310 Instruction Manual | 17

TX Power selection

In standby mode, press FUNC, the top left corner of LCD displays icon,
then press HI/LO to choose High/Low power for the channel in use.

1. When LCD displays “L” icon, it means low power is selected.

2. When LCD displays “H” icon, it means high power is selected.

Stopwatch function

1. In standby mode, , press FUNC, the top left corner of LCD displays
icon, then press S.W to enter into stopwatch function.

2. Press S.W to start timing. Press #/ENT to pause timing. When timing is
pause, press S.W to continue timing.

3. Press PF1, PF2 to exit stop watch function.

NOTE: During timing, press S.W key to stop timing and displays current data,
press this key again to clear timer.

DTMF code Transmit and Enquiry

1. Press FUNC, the top left corner of LCD displays icon, then press
DTMF; the LCD displays DTMF data and group number (total 16 groups)

of current group.

2. Rotate the channel switch to choose the desired group and DTMF data,
press PTT to transmit the selected DTMF signaling. If current group does
not edit DTMF data, the LCD displays “EMPTY”.

3. When current group displays “EMPTY”, press FUNC , the top left corner
of the LCD displays icon, press and hold DTMF until the transceiver
emits “DU” beep, the transceiver enters into DTMF edit state, LCD
displays “___________”, now you can enter the desired DTMF data through
the keypad.

4. When finished editing, press side key PF2 to save DTMF signaling.

Keypad lock

In order to prevent wrong operation, the keypad can be locked. In standby
mode, press FUNC, the top left corner of the LCD displays icon, then press
and hold until the transceiver emits “DU” beep, the LCD displays icon.
Now the keypad is locked. Repeat the above operation to unlock the kaypad.
The icon disappears.

18 | CT310 Instruction Manual

Single-band Switching

To avoid interference from the sub channels when the main channel is in use,
the single band switching function helps to turn o the sub channel band
quickly.

1. In standby mode, press S.W, the radio will display the upper band, the lower
band will be turned o.

2. Press S.W again, the radio will display the lower band, the upper band will
be turned o.

3. Press S.W again to return to dual band display.

Function Menu Setup

Menu 1-13 of this transceiver are channel operations. Channel operations
temporarily change the functions of the current channel. When the unit is
turned o or the channel has been changed, the relevant setup will be erased.
Only in VFO mode, the channel operations will be saved until the next change.
Menu 14-31 is the background operation, it is valid for all channels, the relevant
setup will be saved until next change.
The operating steps are as follows:

1. Press FUNC, the top left corner of LCD displays icon, then press SET
key to enter function menu.

2. Press MAIN - V/M to choose the desired function.

Note:When setup CTCSS/DCS encode and decode, press FM to choose

CTCSS, DCS or to disable these codes. If a DCS code has been selected, press
S.W to switch positive code or reverse code.

3. Rotate the channel switch to choose the desired setting.

4. Press ESC or #/ENT to confirm and exit.

CT310 Instruction Manual | 19

Function Menu setup

Menu Display Function Options

OFF No CTCSS/DCS Encode

1 T-CDC

2 R-CDC

3 RT-CDC

4 TONDEC Optional signaling setup DTMF Current optional signal is DTMF.

CTCSS/DCS
Encode

CTCSS/DCS
Decode

CTCSS/DCS
Encode/Decode Synchronous

62.5-254.1Hz +Self defined 51 groups fixed CTCSS encode+1 group self- defined encode

000N-777I

OFF No CTCSS/DCS Decode

62.5-254.1Hz +Self defined

000N-777I

OFF No CTCSS/DCS encode/decode

62.5HZ-254.1Hz+Self defined 51 groups fixed CTCSS encode/decode + 1 group self-defined CTCSS encode/decode

000N-777I 1024 group DCS encode/decode

SQ

CTCSS/DCS

5 SIGNAL Squelch mode setup

6 STEP Frequency step size setup 2.5K-50K 9 options in total

7 W/N Wide / Narrow Band Selection 25K/12.5K Wide band/Narrow band

8 REV Frequency Reverse

TONE

CT&TO

CT/TO

ON

OFF Close Frequency reverse function.

20 | CT310 Instruction Manual

Description

1024 groups DCS Encode

51 groups fixed CTCSS decode+1 group self- defined decode

1024 groups DCS decode

When the current channel received matches RF signals, the transceiver can hear
the conversation from the other party.

When the current channel received matches RF signals and CTCSS/DCS signaling,
the transceiver can hear the conversation from the other party.

When the current channel received matches RF signals and optional signaling,
the transceiver can hear the conversation from the other party.

When the current channel received matches RF signals + optional signaling +
CTCSS/DCS signaling, the transceiver can hear the conversation from the other party.

When the current channel received matches RF signals or optional signaling or
CTCSS/DCS signaling, the transceiver can hear the conversation from the other party.

Turn on Frequency reverse function, TX and RX frequency of the current channel will be
interchanged.

CT310 Instruction Manual | 21

9 TALKAR Talk Around

10 OFFSET Oset Frequency setup 0-70MHz Frequency range is 00-70MHz.

11 NAME Editing Channel name a-Z In channel name display mode, the edited channel name will be displayed.

TX=RX

OFF Close Talk Around function.

BUSY Carrier wave lock, transmitting is prohibited when received matching carrier wave.

12 RPLOCK Busy Channel Lockout

13 TX TX OFF

14 BAND Band Limit ON/OFF Turn on/o band limit function.

15 DSPSUB Sub band display setup

16 BEEP Keypad Voice prompt setup ON/OFF Turn on/o the keypad voice prompt function

17 TOT Time-Out-Timer

18 VOX

19 VDELAY VOX Delay Setup 0.5S-3S Total 27 levels available, each interval is 0.1S

20 APO Automatic Power O Setup

21 DTMF

22 SQL Squelch level Setup 00-09 10 levels of squelch available, “00” is minimum setup value (normally open)

Voice Operated Transmission
(VOX) Setup

DTMF
Transmitting Time

REPEAT

OFF

ON TX function is enabled in the current channel.

OFF TX function is disabled in the current channel.

FREQ Display sub band frequency or channel

VOLT Display current battery voltage

OFF

OFF Turn o time-out timer

1-27MIN

OFF

1-10 Total 10 VOX levels as option

OFF Disable the Automatic power o function

30MIN-2HOUR 30minutes ~ 2hours: Total 3 levels available.

50MS-500MS Total 5 kinds of DTMF transmitting time available

22 | CT310 Instruction Manual

Turn on Talk Around function, current channel will transmit at RX frequency, if
CTCSS/DCS signaling is set, it will interchange decoding CTCSS/DCS as encoding.

Signaling lock, transmitting is prohibited when received matching carrier but with
mismatching CTCSS/DCS.

Close BCLO function.

Sub band display is disabled

Total 27minutes of TOT for optional, each interval is 1minute

Turn o the VOX function

CT310 Instruction Manual | 23

23 SCAN Scan Dwell Time Setup

5ST-15ST

2SP

FUNCT When finished function setting or enter into function menu, icon disappeared.

24 FTIME Function Icon Stay Time

25 LIGHT LCD Backlight

26 COLOR LCD Backlight Color BLUE/ORG/PUR Blue/Orange/Purple

27 ID Self ID inquiry *** LCD displays radio self ID, DTMF ID is 3 digits.

28 TBST Tone Pulse Frequency Selection

29 SAVE Battery Save Setup

30 RADIO FM radio ON/OFF Allow/Prohibit using FM radio.

31 PF1

Self define PF1
key function

1SEC-3SEC

ALWAYS Function icon is always display, only when pressing function key again, the icon will disappear.

ON/OFF Always on/o

AUTO

1750Hz/2100Hz/1450Hz/
1000Hz

OFF Turn o battery save function.

1:2-1:8 Battery save time is 1:2-1:8

AUTO

VOLT Displays current battery capacity.

CALL

ALARM

SUBPTT Sub band PTT.

OFF No function.

24 | CT310 Instruction Manual

When scanning th e matched signal, the transceiver will stop scanning for
5-15 seconds then resume.

When scanning th e matched signal, the transceiver will stop scanning, 2seconds after signal
disappeared, then resume.

When finished function setting or enter into function menu, icon stay 1-3seconds then
disappeared.

Backlight will automatic closed after a period.

Tone plus frequency is 1750Hz/2100HZ/1450Hz
/1000Hz

Battery save ratio is adjusting automatically.

Call function.

Emergency alarm function.

CT310 Instruction Manual | 25

Display Mode Setup

There are three kinds of display modes for optional.

1. Press PF2 key to turn on radio, hold PF2 key until transceiver emits beep.

2. Press MAIN or V/M key to choose No. 01 function item, it shows “DSP”

on LCD.

3. Rotate channel switch to choose desired setup.

FREQ: Frequency + Channel mode, transceiver displays current channel

name + frequency, press V/M key to switch into VFO mode.

CH: Channel mode, 1 ~ 21 items of function menu will hide automatically,

user can only operate some functions. It is unable to switch into VFO by
pressing V/M key. This model can be used for Amateur mode.

NAME: Channel + Name Tag mode, transceiver displays current channel

number+ channel name, press V/M key to switch into VFO mode.

4. Press ESC key or #/ENT key to confirm and exit.

Resume Factory Default

You can make all the settings of transceiver return to the factory default
settings when transceiver can not work normally because of wrong operation
or error setup.

1. Press PF2 key to turn on radio, hold PF2 key until transceiver emits beep.

2. Press MAIN or V/M to choose No. 02 function item, it shows “RESTOR”

on LCD.

3. Rotate channel switch to choose desired setup.

OFF: No operations.
FACT: Resume all items to factory default, including channel and

background settings.

INIT: Resume background settings to factory default, channel operations

are keeping.

4. Press ESC key to exit current selection.

5. Press #/ENT key to confirm current selection.

Note: In power o state, hold ESC key to power on radio, the radio will resume
to factory default.

26 | CT310 Instruction Manual

Technical specifications

General

Frequency Range VHF: 144-146MHz

UHF: 430-440MHz

Channel Capacity 200 channels

Channel Spacing 25KHz (wide band) 12.5KHz (narrow band)

Phase-locked Step 0.1KHz

Operation Voltage 7.4V DC ±20%

Battery Life More than 12 Hours(1500mAh),by 5-5-

90 working cycle

Frequency Stability ±2.5ppm

Operation Temperature -20°C ~ +55°C

Size 127 x 61 x 36.5mm (with battery, antenna)

Weight 237g (with battery, antenna)

Receiver Wide band Narrow band

Sensitivity (12dB SINAD) ≤0.25μV ≤0.35μV

Adjacent Channel Selecitvity ≥65dB ≥60dB

Intermodulation ≥60dB ≥60dB

Spurious Rejection ≥70dB ≥70dB

Hum & Noise ≥45dB ≥40dB

Audio Distortion ≤5%

Audio Power Output 1000mW/10%

Transmitter Wide band Narrow band

Power Output 4W/1W (UHF) 5W/1W (VHF)

Modulation

Adjacent Channel Power ≥65dB ≥60dB

Hum & Noise ≥40dB ≥40dB

Spurious Emission ≤-36dB ≤-36dB

Audio Distortion ≤5%

16KΦF3E 11KΦF3E

CT310 Instruction Manual | 27

Prodotto o importato da: MIDLAND EUROPE s.r.l.
Via R. Sevardi 7- 42124 Reggio Emilia Italia

www.midlandreurope.com

L’uso di questo apparato può essere soggetto a restrizioni nazionali. Prima dell’uso leggere attentamente le
istruzioni.

Produced or imported by: MIDLAND EUROPE s.r.l.
Via R. Sevardi 7 - 42124 Mancasale Reggio Emilia Italy

Imported by: ALAN - NEVADA UK
Unit 1 Fitzherbert Spur Farlington Portsmouth Hants. P06 1TT - United Kingdom

www.nevada.co.uk

The use of this transceiver can be subject to national restrictions. Read the instructions carefully before
installation and use.

Importado por: MIDLAND IBERIA, SA
C/Cobalt, 48 - 08940 Cornellà de Llobregat (Barcelona - España)
www.midland.es
El uso de este equipo puede estar sujeto a la obtención de la correspondiente autorización administrativa. Lea
atentamente las instrucciones antes de usar el equipo.

Vertrieb durch: ALAN ELECTRONICS GmbH
Daimlerstraße 1K - D-63303 Dreieich Deutschland

www.alan-electronics.de

Die Benutzung dieses Handfunkgerätes ist von den landesspezifischen Bestimmungen abhängig. Vor Be­nutzung Bedienungsanleitung beachten.

Importé par: ALAN FRANCE S.A.R.L.
10 impasse Phytagore - 13127 Vitrolles - France

www.alan-midland.fr

L’utilisation de cet appareil peut être sujet à des restrictions nationales. Avant l’utilisation, lire les instruc­tions.