Qixiang Electon Science & Technoloyg Co.,Ltd.
www.qxdz.cn
A1.170507
AT-778UV
Instruction Manual
CONTENTS
1.FUNCTIONS & FEATURES ........................................................................... 1
2.ACCESSORIES ............................................................................................. 2
3.INITIAL INSTALLATION ................................................................................ 3
4.GETTING ACQUAINTED ............................................................................... 8
5.WORKING MODE ........................................................................................ 11
6.BASIC OPERATIONS ..................................................................................12
7.FUNCTION MENU ....................................................................................... 11
8.CHANNEL MENU ........................................................................................ 20
9.KEYPAD MENU SETUP .............................................................................. 23
10.PROGRAMMING SOFTWARE .................................................................. 24
11.MAINTENANCE .........................................................................................25
12.SPECIFICATIONS ...................................................................................... 26
13.ATTACHED CHART ................................................................................... 27
1. FUNCTIONS & FEATURES
AT-778UV Mobile Radio has nice housing, stoutness & stability, advanced and
reliable functions, perfect & valuable. This amateur mobile radio especially designs
for drivers and it pursues philosophy of innovation and practicality. More functions as
follows:
♦ Adopt superior quality material, better technology and high quality radiator to
ensure stable and durable operation;
♦ 180 degree rotatable FTF LCD display;
♦ Full alloy body for heat radiation;
♦ louder speaker inside microphone and radio base;
♦ Amateur mode and professional mode for different operation requirement;
♦ Distribute buttons reasonably, convenient for operation;
♦ Sperate band width setting for each single channel, Wide 25K, Middle 20K,
Narrow 12.5K;
♦ 200 programmable memory channels, identiied by editing name;
♦ Sperate CTCSS, DCS setting for each single channel, rejecting extra calling
from other radios;
♦ Various scan functions including CTCSS/DCS Scan function;
♦ Smart menu control and PC programming control;
♦ Voltage level protection;
♦ LCD brightless control;
♦ Automatic power on function;
♦ Main unit and microphone key lock function;
♦ Optional wireless microphone;
♦ Optional APP control function;
♦ Optional scramblerfunction;
♦ Optional DTMF, 2Tone, 5Tone function.
1
2. ACCESSORIES
2.1 Standard Accessories
P1
P4
P2
MIC
P3
FUNC
P5
P6
Transceiver
Adjusting screws
Microphone
DC Power Cable
with Fuse Holder
2.2 Optional Accessories
(PC51)
Mobile Bracket
External SpeakerPC cable
Screws
Pads
non-slip mat Fuse(10A 250V)
Regulated Power Supply Programming Software Car Antenna
2
3. INITIAL INSTALLATION
3.1 Mobile Installation
To install the transceiver, select a safe, convenient location inside your vehicle that
minimizes danger to your passengers and yourself while the vehicle is in motion. Consider
installing the unit at an appropriate position so that knees or legs will not strike it during
sudden braking of your vehicle. Try to pick a well ventilated location that is shielded from
direct sunlight.
1.Install the mounting bracket in the vehicle using the supplied selftapping screws (2pcs)
and at washers (2pcs)
Car body
Washer (M5)
Tapping screw
(M5x20mm)
Mounting bracket
2.Position the transceiver, then insert and tighten the supplied hexagon SEMS screws.
♦ Double check that all screws are tightened to prevent vehicle vibration from loosening
the bracket or transceiver.
3.2 DC Power Cable Connection
»Locate the power input connector as close to the transceiver as possible.
3.2.1 Mobile Operation
The vehicle battery must have a nominal rating of 12V. Never connect the transceiver to
a 24V battery. Be sure to use a 12V vehicle battery that has sufcient current capacity. If
the current to the transceiver is insufcient, the display may darken during transmission,
or transmitting output power may drop excessively.
3
1.Route the DC power cable supplied with the transceiver directly to the vehicle's battery
terminals using the shortest path from the transceiver.
♦ We recommend you do not use the cigarette lighter socket as some cigarette lighter
sockets introduce an unacceptable voltage drop.
♦ The entire length of the cable must be dressed so it is isolated from heat, moisture,
and the engine secondary (high voltage) ignition system/ cables.
2. After installing cable, in order to avoid the risk of damp, please use heat-resistant tap to
tie together with fuse box. Don't forget to reinforce whole cable.
3.In order to avoid the risk of short circuit, please cut down connection with negative (-) of
battery, then connect with radio.
4.Confirm the correct polarity of the connections, then attach the power cable to the
battery terminals; red connects to the positive (+) terminal and black connects to the
negative (-) terminal.
♦ Use the full length of the cable without cutting off excess even if the cable is longer
than required. In particular, never remove the fuse holders from the cable.
Red
Black
5. Reconnect any wiring removed from the negative terminal.
6. Connect the DC power cable to the transceiver's power supply connector.
♦ Press the connectors rmly together until the locking tab clicks.
3.2.2 Fixed Station Operation
In order to use this transceiver for xed station operation, you will need a separate 13.8V
DC power supply (not included), power supply( QRP-01) as optional accessories. Please
contact local dealer to require.
The recommended current capacity of your power supply is 12A.
1.Connect the DC power cable to the regulated DC power supply and ensure that the
polarities are correct. (Red: positive, Black: negative).
♦ Do not directly connect the transceiver to an AC outlet.
♦ Use the supplied DC power cable to connect the transceiver to a regulated power
supply.
♦ Do not substitute a cable with smaller gauge wires
4
.
Regulated
power supply (QRP-01)
P
S
T
X
E
T
N
A
Black
Red
Regulated power supply (QRP-01)
DC power cable with fuse holder (QPL-01)
2.Connect the transceiver's DC power connector to the connector on the DC power cable.
♦ Press the connectors rmly together until the locking tab clicks.
»Before connecting the DC power to the transceiver, be sure to switch the
transceiver and the DC power supply OFF.
»Do not plug the DC power supply into an AC outlet until you make all connections.
3.2.3 Replacing Fuses
If the fuse blows, determine the cause, then correct the problem. After the problem is
resolved, replace the fuse. If newly installed fuses continue to blow, disconnect the power
cable and contact your authorized
dealer or an authorized
servicecenter for assistance.
Fuse Location Fuse Current Rating
Transceiver 10A
Supplied Accessory DC
power cable
10A
Only use fuses of the specified type and rating, otherwise the transceiver could be
damaged.
»If you use the transceiver for a long period when the vehicle battery is not fully
charged, or when the engine is OFF, the battery may become discharged, and will
not have sufcient reserves to start the vehicle. Avoid using the transceiver in these
conditions.
5
3.3 Antenna Connection
Before operating, install an efcient, well-tuned antenna. The success of your installation
will depend largely on the type of antenna and its correct installation. The transceiver can
give excellent results if the antenna system and its installation are given careful attention.
Use a 50Ω impedance antenna and low-loss coaxial feed-line that has a characteristic
impedance of 50Ω, to match the transceiver input impedance. Coupling the antenna to the
transceiver via feed-lines having an impedance other than 50Ω reduces the efciency of
the antenna system and can cause interference to nearby broadcast television receivers,
radio receivers, and other electronic equipment.
»Transmitting without first connecting an antenna or other matched load may
damage the transceiver. Always connect the antenna to the transceiver before
transmitting.
»All xed stations should be equipped with a lightning arrester to reduce the risk of
re, electric shock, and transceiver damage.
The possible locations of antenna on a car are shown as following:
3.4 Accessories Connections
3.4.1 External Speaker
If you plan to use an external speaker, choose a speaker with an impedance of 8Ω. The
external speaker jack accepts a 3.5mm (1/8") mono (2-conductor) plug.
SP-01
P
S
T
X
E
T
N
A
»External speaker adopt double port BTL, please care about the connecting way.
The speaker can not connect with the ground, otherwise the speaker will be fault.
The wrong connecting way as the following picture.
6
Error
SP-01
Ground
P
S
T
X
E
T
N
A
3.4.2 Microphone
For voice communications, connect a microphone equipped with an 8-pin modular plug
into the modular socket on the front of the main unit. Press irmly on the plug until the
locking tab clicks.
Microphone
connector
P1
P2
MIC
P3
P4
FUNC
P5
P6
7
4. GETTING ACQUAINTED
4.1 Front panel
2
1
3
MIC
9
4
NO. Key Functions
1
2
3
4 Self dene key
5
6 Self dene key
7 Self dene key
8
9 MIC Microphone Jack
10 Channel switch/Push button/Key lock
11 LCD display Display channel/frequency/function setting
11
P1
P2
P3
Power On/Off/Mute
Self dene key
Self dene key
Self dene key
Function key/ function group key
P4
P5
P6
FUNC
5
8
6
10
7
4.2 Rear panel
ANT EXT SP
2
3
1
8
NO. Key Functions
1 Antenna connector Connect a 50 ohm antenna
2 Ex-Speaker Jack Connect optional SP-01 external speaker
3 Power cable Connect a standard DC power cable
4.3 Display
7 8 911
12 13 14
1
10
2
16
17
3
21 2223
25
NO. Functions
1 Displays the self dene function when press P1
2 Displays the self dene function when press P2
3 Displays the self dene function when press P3
4 Displays the self dene function when press P4
5 Displays the self dene function when press P5
6 Displays the self dene function when press P6
7 Displays the main channel TX or RX status
8 Displays when Automatic power on function is on
9 Displays the main channel eld strength
10 Displays main channel number in channel mode
11 Displays when set band width for main channel
12 Displays when main channel set CTCSS/DCS
13 Displays when main channel reverse function is on
14 Displays when main channel offset function is on
15 Displays when main channel is in scan list
16 Displays main channel frequency or name
17 Displays sub channel number in channel mode
18 Displays when setting band width for sub channel
19 Displays when current sub channel set CTCSS/DCS
20 Displays when sub channel reverse function is ON
21 Displays when sub channel offset function is ON
22 Displays when sub channel receive a signal
23 Display sub channel frequency or name
24 Displays signal strength
25 Display voltage and menu setting
24
6
5
4
1518 19 20
9
4.4 Microphone
1
2
7 8
4
3
10
6
5
9
NO. Key Functions
1 UP Increase frequency, channel number or setting value
2 DOWN Decrease frequency, channel number or setting value
3 PTT Press the PTT (Push-TO-Talk) key to transmit
4 Number Key Input VFO frequency or DTMF dial out etc.
5 A/B band Choose left band or right band as Main band
6 Band indicator The indicator light on for Main band
7 TX/RX indicator Light green while receiving, Light red while transmittin
8 MIC Speak here during transmission
9 Speaker
10 Lock UP/DOWN
When shut the speaker in the base, you can hear the calling by
this speaker
When this key is in up position, It is unlock UP/DOWN key, when
this key is in down poisition, UP/DOWN key will be locked
MIC Connector Diagram(in the front view of connector)
Key Pad Serial Data
+5V
DOWN
UP
MIC GND
MIC
PTT
GND
10
5. WORKING MODE
(AMATEUR TRANSCEIVER OR PROFESSIONAL TRANSCEIVER)
According to practical application, you can set the radio works as Amateur Transceiver
mode or Professional Transceiver mode. There are also 2 levels operation menu to set
functions as you need. It is easy and convenient. FUNC MENU is for set background
function, CHAN MENU for set channel function, MINI KEY menu for set self dene key.
1.Working Mode:
A. By programming software: In PC software's "General Setting" menu, choose "Display
Mode" to select Amateur Transceiver mode or Professional Transceiver mode.
B. BA By manual setup: Please refer to "Display Mode" in Page 16.
2.Amateur Transceiver Mode:
Except setting as "CH" mode, others considered as Amateur transceiver
mode. Under this mode, press V/M matched PX key to switch between
Channel mode and VFO mode.
A. Frequency+Channel mode: When set display as "FR", it enters into
Frequency+Channel mode, new setting of channel operation and
shortcut operation can be temporarily used by user. Once the radio
is turned off or switched to anothe channel, the temporary setting will
be erased and back to initial settings.(As pic 1)
B. Channel+Name Tag Mode: When set display as "NM",it enters into
Channel +Name Tag mode. At this mode, it will display corresponding
channel name when the current channel is edited with name.
Otherwise, it will display frequency + channel. Its operations are the
same as frequency + channel mode.(As pic 2)
C. VFO Mode(Frequency mode): This mode shows only frequency on
the display. Shortcut operation and Channel setting will be changed
& stored as the latest value permanently. Once the radio is turned off
or changed to new VFO frequency, the latest setting is remained until
next change.(As pic 3)
3. Professional Transceiver Mode:
When set display mode as "CH" , i t enters into Professional Transceiver
mode. At this mode,except scan,other shortcut operation can't operate.
And from No.1-10 menu in function setting will be autohidden,They
should be set by PC software. If there is corresponding name for
current channel , the LCD wi l l display current channel name Otherwise,it shows current
channel number. (As Pic 4)
（pic1）
（pic2）
（pic3）
（pic4）
»If transceiver programmed as professional transceiver mode and locked, you can't
return to amateur transceiver mode by manual operation from general setting.
4.Under any mode, the FUNC MENU setting can be changed and saved.
11
6. BASIC OPERATIONS
6.1 Switching the Power On/Off
Short press to power on the radio or set automatic power on according the funtion
menu, hold for over 2 seconds to power off the radio.
6.2 Adjusting the Volume
1. Short press the PX key programmed as VOL control, the LCD display "VOL:XX", then
turn the channel switch to adust volume level.
2. During receiving, short press to mute the speaker, the LCD display "AUDIO:MT", short
press it again to return last volume level.
»During communication, volume level can be adjusted more accurate.
6.3 Adjusting Frequency
1. By channel knob: In VFO mode, turn channel knob can adjust frequency, push channel
knob, the matching charactor will ash, then turn channel knob to adjust the frequency
by step size 1K, 10K, 100K, 1Mz or 10MHz.
»The microphone UP/DOWN key can also adjust the frequency, each press move
one step size. hold the key can fast adjust frequency. if the channel knob is
programmed as VOL function, users need press the PX key which programmed as
FRQ function, when the LCD displays "VFO FREQ", turn channel knob to adjust
frequency.
2. By number key: In VFO mode, you can input wanted frequency by the microphone
number key. For eaxmple if want 145.125Mhz, just press key 1, 4, 5, 1,2,5, if want
145Mhz, just press 1, 4, 5, . The input is invalid in the frequency is over range.
»2.5k, 5k, 6.25k, ,10k, 12.5k, 20k, 25k, 30k and 50k step size available for this radio.
6.4 Adjust Channel
1. Adjust channel by channel switch: In channel mode, turn channel knob to adjust the
channel, the [UP]/[DOWN] key in the microphone can also adjust the main channel.
» If there is an empty channel, the radio will jump over it to next channel. If the
channel knob is programmed as VOL function, users need press the PX key which
programmed as CH function, when the LCD displays "CH XX ", turn channel knob
to adjust channel.
2. By number key: In CH mode, you can input wanted channel by the microphone input
3 numbers (001-200) , 001 stands for channel 1, 200 stands for channel 200. if input
channel is an empty channel, the radio will report error and return to last channel.
12
6.5 Receiving
When the channel you are operating being called, the screen shows red RX and field
strength. in this way you can hear the calling.
»When the RX icon and eld strength ashes, but can not hear the caling, it means
current channel receive a matching carrier but unmatching signaling. Refer to
CTCSS/ DCS CODE or Optional Signaling setup in Page 14).
6.6 Transmitting
Hold [PTT] and speak into microphone. the radio start transmit. Hold the microphone
approximately 2.5-5.0cm from your lips and speak to microphone in your normal speaking
voice to get best timbre.
»Only available transmit on main channel.
6.7 Switch between Main Channel and Sub Channel
This radio work by single channel dual watch , in standby, the frequency in the upper
side is main channel and down side is sub channel. the transmit is available only on main
channel.
1. Short press [FUNC] to switch function group, choose the [PX] key defined as A/B
function.
2. Short press [PX] key dened as A/B function, then repeat press this key or turn channel
knob to switch main channel and sub channel, the LCD displays Main:XX.
3. Hold [PUSH] or [FUNC] key to store and exit, or wait 10 seconds the radio will store the
setting and exit.
6.8 Switch between VFO and Channel Mode
1. Short press [FUNC] to switch function group, choose the [PX] key defined as V/M
function.
2. Short press [PX] key defined as V/M function, then repeat press this key or turn
channel knob to switch main channel and sub channel, the LCD displays V/M:XX.
3. Hold [PUSH] or [FUNC] key to store and exit, or wait 10 seconds the radio will store the
setting and exit.
6.9 Channel Edit
1. In VFO mode, turn channel knob or the [UP]/[DOWN] key in microphone to adjust
frequency.
2. Short press [FUNC] to switch function group, choose the [PX] key defined as CDT
function. Short press [PX] key dened as CDT function to set CTCSS/DCS code. turn
channel knob or the [UP]/[DOWN] key in microphone to choose CTCSS/DCS code.
3. Long press [FUNC] key to enter channel setting menu, to choose wanted setting.
4. Short press [FUNC] key to switch function group, hold the [PX] key defined as V/M
function until the channel number ashes, if the channel number is red means current
channel is valid, if the channel number is green, means current channel is empty.
5. Turn the channel knob or microphone [UP]/[DOWN] key to choose the channel number
to be stored.
6. Hold the [PX] key dened as V/M function, the channel number stop ash and radio
emits a beep sound, the channel is stored successfully.
13
6.10 Channel Delete
1. In channel mode, turn the channel knob or microphone [UP]/[DOWN] key to choose an
unwanted channel.
2. Short press [FUNC] key to switch function group, choose the PX key defined as V/
M function, press this key together with [FUNC] key for 2 seconds, current channel is
deleted and automatical jump to next channel.
6.11 CTCSS/DCS Encode and Decode Setup
1. Short press FUNC to switch function group, choose the PX key defined as CDT
function.
2. Short press PX defined as CDT function, then repeatly press this key can choose
current channel CTCSS/DCS code ON or OFF. When the LCD displays: RCDT:XXX,
turn channel knob or press microphone UP/DOWN key to choose if add CTCSS/DCS
code to current channel. press PUSH then turn channel knob or press microphone UP/
DOWN key to choose wanted CTCSS/DCS code.
CTCSS: 62.5-254.1Hz plus one self dene group. total 52 groups.
DCS: 000N-777I total1024 groups
N is positive code, I is inverse code.
Press FUNC key can choose positive or inverse code.
3. Hold [PUSH] or [FUNC] key to store and exit, or wait 10 seconds the radio will
automatially store the setting and exit.
»Under channel mode,this operation can be temporarily used by user. Once the
radio is turned off or switched to another channel, the temporary setting will be
erased. If the channel setting programmed for valid, the temporary setting will keep
valid until next change, turn off radio or switch to another channel, the temporary
setting will not changed.
6.12 CTCSS Scan
Short press [FUNC] to switch function group, choose the [PX] key defined as CDT
function. short press this key to enter CTCSS code setting. when the LCD displays CTC,
long press this key to enter CTCSS scan. turn channel knob or press microphone [UP]/
[DOWN] key can change scan direction. Once nding a matching CTCSS signaling, it will
stop 5 seconds then scan again, press any key to exit.
6.13 DCS Scan
Short press [FUNC] to switch function group, choose the [PX] key defined as CDT
function. short press this key to enter DCS code setting. when the LCD displays DCS,
long press this key to enter DCS scan, turn channel knob or press microphone [UP]/
[DOWN] key can change scan direction. Once nding a matching DCS signaling, it will
stop 5 seconds then scan again, press any key to exit.
14
6.14 Frequency/Channel Scan
Frequency Scan
In frequency (VFO) mode, this function is designed to monitor signal of all frequency
points under each step size.
1. In VFO mode, press [FUNC] key to switch function group, choose the [PX] key dened
as SCN function.
2. Short press the [PX] key defined as SCN function to start frequency scan, the LCD
displays "S".
3. Turn channel knob or press microphone [UP]/[DOWN] key can change scan direction.
4. Turn channel knob or press any key except microphone [UP]/[DOWN] key to exit.
Channel Scan
In channel mode, this function is designed to monitor signal of all frequency points under
each step size.
1. In channel mode, press [FUNC] key to switch function group, choose the [PX] key
dened as SCN function.
2. Short press the [PX] key defined as SCN function to start frequency scan, the LCD
displays: S.
3. Turn channel knob or press microphone [UP]/[DOWN] key can change scan direction.
4. Turn channel knob or press any key except microphone [UP]/[DOWN] key to exit.
6.15 Scan Skip
In channel mode, press [FUNC] key to switch function group, choose the [PX] key dened
as SCN function. Hold this key to add into or delete from scan list.
When LCD displays:S, the current channel is in scan list. When LCD not displays:S, the
current channel is not in scan list.
6.16 Squelch off/ Squelch off Momentary
1. Press [FUNC] key to switch function group, choose the [PX] key defined as MON
function.
2. Short press the [PX] key defined as MON function to turn on squelch. Squelch off:
Press the [PX] key to disable squelch, press it again to resume squelch. Squelch off
momentary: Hold the [PX] key to disable squelch, release it to resume squelch.
»The above functions should be set in program software.
6.17 KEYPAD LOCKOUT
Avoiding unintentional operation, this function will lock he keys except [PTT], [PUSH],
Keys.
1. Long press [PUSH] button, the downside of the LCD displays Key Lock, means the
keypad is locked.
2. Long press it again, the downside LCD displays : Key Unlock, means the keypad is
unlocked.
15
7. FUNCTION MENU
1. Hold [FUNC] key for over 2S to enter SELECT MENU interface.
2. Press [P4],[P6] or turn channel knob to choose menu list. Press [P5] can fast turn page.
3. Press [PUSH] to enter FUNC MENU list.
4. Press [P4],[P6] key or turn channel knob to choose wanted setting.
7.1 Beep
1. Enter FUNCTION MENU list, choose No.01 function.
2. Press [PUSH] button, the menu value in LCD turns to green color.
3. Turn channel knob to choose wanted setting.
Off~5: 6 group available.
Off: Turn off BEEP function.
4. Press [PUSH] button or [P3] key to store setting and exit.
7.2 FREQUENCY STEP SIZE SETUP
1. Enter FUNCTION MENU list, choose No.02 function
2. Press [PUSH] button, the menu value in LCD turns to green color.
3. Turn channel knob to choose wanted setting.
Total 9 Channel step size available: 2.5K,5K,6.25K,10K,12.5K,20K,25K, 30K and 50K.
4. Press [PUSH] button or [P3] key to store setting and exit.
7.3 Display mode setup
This radio has 3 different dispaly modes: Frequency+Channel mode. Channel mode,
Channel+Name Tag mode.
1. Enter FUNCTION MENU list, choose No.03 function.
2. Press [PUSH] button, the menu value in LCD turns to green color.
3. Turn channel knob to choose wanted setting.
FR: Frequency+Channel mode
CH: Channel mode
NM: Channel+Name Tag mode(Amateur transceiver mode), If channel not named, it
display Fequency + Channel mode.
4. Press [PUSH] button or P3 key to store setting and exit.
7.4 Squelch level Setup
This function use for setting RX signal strength, the calling will be heard only when reach
setted level, otherwise the radio will keep mute.
1. Enter FUNCTION MENU list, choose No.04 function
2. Press [PUSH] button, the menu value in LCD turns to green color.
3. Turn channel knob to choose wanted setting.
Off-9 : Total 10 levels, OFF is lowest level, squelch is off
4. Press [PUSH] button or [P3] key to store setting and exit.
16
7.5 VOL Volume level setting
1. Enter FUNCTION MENU list, choose No.05 function
2. Press [PUSH] button, the menu value in LCD turns to green color.
3. Turn channel knob to choose wanted setting
1-36 : total 36 levels available
4. Press [PUSH] button or [P3] key to store setting and exit
7.6 PWD password setting
1. Enter FUNCTION MENU list, choose No.06 function
2. Press [PUSH] button, the menu value in LCD turns to green color.
3. Turn channel knob to choose wanted setting
ON: Turn on password function.
OFF: Turn off password function
Press [PUSH] button or [P3] key to store setting and exit.
7.7 Scan Dwell Time Setup
1. Enter FUNCTION MENU list, choose No.07 function.
2. Press [PUSH] button, the menu value in LCD turns to green color.
3. Turn channel knob to choose wanted setting.
TO: It pause for preset pause time when scanning a matching signal, then resume
scan.
CO: it pauses once scanning a matching signal, and resume scan when signal
disappears.
SE: It stops once scanning a matching signal.
4. Press [PUSH] button or [P3] key to store setting and exit.
7.8 Scan Pause Time Setup
1. Enter FUNCTION MENU list, choose No.08 function
2. Press [PUSH] button, the menu value in LCD turns to green color.
3. Turn channel knob to choose wanted setting
5S : it pauses 5s once scanning a matching signal, then resume scan
10S : it pauses 10s once scanning a matching signal, then resume scan
15S : it pauses 15s once scanning a matching signal, then resume scan
4. Press [PUSH] button or [P3] key to store setting and exit.
7.9 AOP (Automatic power on setup)
When AOP is activated, the radio will automatically power on once the car is power on.
1. Enter FUNCTION MENU list, choose No.09 function.
2. Press [PUSH] button, the menu value in LCD turns to green color.
3. Turn channel knob to choose wanted setting
ON : Enable AOP function
OFF: Disable AOP function
4. Press [PUSH] button or [P3] key to store setting and exit.
17
7.10 RDW(Dual Watch setup)
1. Enter FUNCTION MENU list, choose No.10 function
2. Press [PUSH] button, the menu value in LCD turns to green color.
3. Turn channel knob to choose wanted setting
ON: Enable Dual Watch function
OFF: Disable Dual Watch function
4. Press [PUSH] button or [P3] key to store setting and exit.
7.11 DIM (Backlight Brightless Setup)
1. Enter FUNCTION MENU list, choose No.11 function
2. Press [PUSH] button, the menu value in LCD turns to green color.
3. Turn channel knob to choose brightless level 1, 2, 3.
4. Press [PUSH] button or [P3] key to store setting and exit.
7.12 TOT(Time Out Timer)
The time-out timer limits continuous transmitting time. When transmit time last over
programmed value, the transmitting will stop and emit a prompt.
1. Enter FUNCTION MENU list, choose No.12 function
2. Press [PUSH] button, the menu value in LCD turns to green color
3. Turn channel knob to choose wanted setting.
1-30: 1-30 minutes range available by 1 minute/step
OFF: Turn off TOT function
4. Press [PUSH] button or [P3] key to store setting and exit.
7.13 APO (Automatic Power OFF)
Once APO is activated, the transceiver will be automatically switched off when the pre-set
timer running out.
1. Enter FUNCTION MENU list, choose No.13 function
2. Press [PUSH] button, the menu value in LCD turns to green color.
3. Turn channel knob to choose wanted setting
30Min: Automatical power on after 30 minutes.
60Min: Automatical power on after 60 minutes.
120Min: Automatical power on after 120 minutes
OFF: Automatical power on function is off
4. Press [PUSH] button or [P3] key to store setting and exit
7.14 Pilot Frequency
This function uses to start repeater. It needs a certain intensity Pilot Frequency to start
dormant repeater. As usual, no need to send pilot frequency again once repeater started.
1. Enter FUNCTION MENU list, choose No.14 function
2. Press [PUSH] button, the menu value in LCD turns to green color.
3. Turn channel knob to choose wanted setting
1000Hz: Pilot frequency 1000Hz
18
1450Hz: Pilot frequency 1450Hz
1750Hz: Pilot frequency 1750Hz
2100Hz: Pilot frequency 2100Hz
4. Press [PUSH] button or [P3] key to store setting and exit
7.15 DIR (LCD display direction setup)
1. Enter FUNCTION MENU list, choose No.15 function
2. Press [PUSH] button, the menu value in LCD turns to green color.
3. Turn channel knob to choose wanted setting
FAIL: Revers display
STAN: normal display
4. Press [PUSH] button or [P3] key to store setting and exit.
7.16 Microphone Speaker
1. Enter FUNCTION MENU list, choose No.16 function
2. Press [PUSH] button, the menu value in LCD turns to green color
3. Turn channel knob to choose wanted setting.
M H: Turn on Main speaker and microphone speaker.
MAIN: Turn on Main speaker.
HAND: Turn on microphone speaker
4. Press [PUSH] button or [P3] key to store setting and exit
7.17 RTDF ( RX/TX dissimilar frequency Setup)
This radio has dissimilar frequency function, when this function is on the frequency in
upside of LCD is RX frequency, and the downside frequency is TX frequency. You can
revise the RX frequency by num beric key in microphone, you can revise TX frequency by
the A/B key in microphone or the PX key dened as A/B function.
1. Enter FUNCTION MENU list, choose No.17 function.
2. Press [PUSH] button, the menu value in LCD turns to green color.
3. Turn channel knob to choose wanted setting
ON: Turn on RTDF function.
OFF: Turn off RTDF function
4. Press [PUSH] button or [P3] key to store setting and exit.
7.18 Reset Factory Default
If your radio seems to be malfunctioning,resetting the microprocessor may solve the
problem.
1. Enter FUNCTION MENU list, choose No.18 function
2. Press [PUSH] button, the menu value in LCD turns to green color.
3. Turn channel knob to choose wanted setting
FACT: All channel, signaling function setup resume factory default.
SETUP: No 10-18 function menu setup resume factory default
4. Press [PUSH] button or [P3] key to store settint and exit
19
8. CHANNEL MENU
1. Hold [FUNC] key for over 2S to enter SELECT MENU interface.
2. Press [P4],[P6] or turn channel knob to choose menu list. Press [P5] can fast turn page.
3. Press [PUSH] to CHAN MENU list
4. Press [P4],[P6] key or turn channel knob to choose wanted setting
8.1 RCDT (CTCSS/DCS Decode Setup)
1. Enter CHAN MENU, choose No.1 function
2. Press [PUSH] button, the menu value in LCD turns to green color.
3. Turn channel knob to choose wanted setting
OFF: Turn off CTCSS/DCS decode.
CTCSS: Choose CTCSS decode.
DCS: Choose DCS decode
4. After choose encode type, press [PUSH] to enter value setup, turn channel knob to
choose wanted CTCSS/DCS code.
CTCSS: 62.5-254.1Hz, and one self- dene group, total 52 groups
DCS: 000N-777I, total 1024 groups
N is positive code, I is inverse code.
Press [FUNC] key can choose positive or inverse code
5. Press [PUSH] button or [P3] key to store setting and exit
»The working of CTCSS/DCS decode shall be work associated with the squelch
mode setup. (Refer to Signaling Combination setup in page 21).
8.2 CTCSS/DCS Encode Setup
1. Enter CHAN MENU, choose No.2 function
2. Press [PUSH] button, the menu value in LCD turns to green color.
3. Turn channel knob to choose wanted setting.
OFF: Turn off CTCSS/DCS decode.
CTCSS: Choose CTCSS decode.
DCS: Choose DCS decode
CTCSS: 62.5-254.1HZ, and one self- dene group, total 52 groups
DCS: 000N-777I, total 1024 groups
N is positive code, I is inverse code.
Press [FUNC] key can choose positive or inverse code
4. Press [PUSH] button or P3 key to store setting and exit.
»This settting is valid only when CTCSS/DCS signaling added.
8.3 HIGH/MID/LOW Power Selection
1. Enter CHAN MENU, choose No 3 function
2. Press [PUSH] button, the menu value in LCD turns to green color
20
3. Turn channel knob to choose wanted setting
HI: Choose high power level.
MI: Choose middle power level.
LO: Choose low power level.
4. Press [PUSH] button or [P3] key to store setting and exit
8.4 Signaling Combination Setup
This function can improve the level of blocking irrelative signals.
1. Enter CHAN MENU, choose No.4 function
2. Press [PUSH] button, the menu value in LCD turns to green color.
3. Turn channel knob to choose wanted setting.
SQ:You can hear the calling when receive a mathcing carrrier.
CDT:You can hear the calling when receive a matchng carrier and CTCSS or DCS
signaling
4. Press [PUSH] button or [P3] key to store setting and exit.
»This settting is valid only when CTCSS/DCS signaling added.
8.5 Band-width Selection
Select suitable bandwidth in accordance with different local conditions
1. Enter CHAN MENU list, choose No.5 function
2. Press [PUSH] button, the menu value in LCD turns to green color.
3. Turn channel knob to choose wanted setting.
WID: band width is 25k(Wide band)
MID: band width is 20k(Middle band)
NAR: band width is 12.5k(Narrow band)
4. Press [PUSH] button or [P3] key to store setting and exit.
8.6 Reverse TX/RX
When turn on this function, the TX frequency truns to RX frequency and RX frequency
turns to RX frequency. the signaling will also reversed if CTCSS/DCS signaling exist in
this channel.
1. Enter CHAN MENU list, choose No.6 function
2. Press [PUSH] button, the menu value in LCD turns to green color.
3. Turn channel knob to choose wanted setting.
ON: Turn on reverse function
OFF: Turn off reverse function
4. Press [PUSH] button or [P3] key to store setting and exit
21
8.7 Talk Around
This function enable direct communication with other radios in case the repeater is not
activated or when out of the repeater range. The transceiver willtransmit by RX frequency
with its CTCSS/DCS signaling.
1. Enter CHAN MENU list, choose No.7 function
2. Press [PUSH] button, the menu value in LCD turns to green color.
3. Turn channel knob to choose wanted setting
ON: Turn on talk around function
OFF: Turn off talk around function
4. Press PUSH button or P3 key to store setting and exit.
»This function is hide when RTDF function is on.
8.8 Offset Freqeuncy And Direction Setup
1. Enter CHAN MENU list, choose No.8 function
2. Press [PUSH] button, the menu value in LCD turns to green color.
3. Turn channel knob to choose wanted setting.
-: Minus offset, means transmitting frequency lower than receiving frequency.
+: Plus offset, means transmitting frequency higher than receiving frequency.
OFF: OFFSET is turn off. Transmitting frequency is same as receiving frequency. 19
VHF: 0 - 38 Mhz frequency avaiable.
UHF: 0 - 90 Mhz frequency avaiable.
4. Press [PUSH] button or [P3] key to store setting and exit.
»OFFSET frequency is adusted according to step size setup. This function is hide
when RTDF function is on.
8.9 Editing Channel Name
After edit a name for a channel, if the display mode is channel name, the radio will display
the name edited in this menu. Otherwise it will display the frequency.
1. Enter CHAN MENU list, choose No.9 function
2. Press [PUSH] button, the menu value in LCD turns to green color.
3. Turn channel knob to choose wanted setting. Press [PUSH] to conrm and enter editing
for next charactor.
4. Press [PUSH] button or [P3] key to store setting and exit.
»In Frequency (VFO) mode or RTDF function is on. ,this function will be auto-hidden.
8.10 Busy Channel Lockout
Busy channel lockout is disable transmitting while RX singal is received. once the channel
is busy and you press [PTT], the raido will beep as warning and get back to receiving.
1. Enter CHAN MENU list, choose No.10 function
2. Press [PUSH] button, the menu value in LCD turns to green color.
3. Turn channel knob to choose wanted setting.
22
BU: Signaling busy lockout, transmitting is inhibited when current channel receives a
matching carrier.
RL: Signaling busy lockout, transmitting is inhibited when current
channel receives a matching carrier but dis-matching CTCSS/DCS code.
OFF: Busy channel lockout is disabled.Transmitting is allowed in any receiving status
4. Press [PUSH] button or [P3] key to store setting and exit
8.11 TX OFF
1. Enter CHAN MENU list, choose No.11 function
2. Press [PUSH] button, the menu value in LCD turns to green color.
3. Turn channel knob to choose wanted setting.
ON: TX allowed, press [PTT] to transmit
OFF: TX not allowed, press [PTT] will emit a beep.
4. Press [PUSH] button or [P3] key to store setting and exit
9. EYPAD MENU SETUP
9.1 Main unit keypad menu setup
1. Hold [FUNC] key for over 2S to enter SELECT MENU interface.
2. Press [P4],[P6] or turn channel knob to choose menu list. Press [P5] can fast turn page.
3. Press [PUSH] to enter MINI KEY menu list.
4. Press [P4],[P6] key or turn channel knob to choose function group. Short press [PUSH]
key to conrm.
5. Short press [P1] - [P6] to choose wanted self-dene key.
6. Short press [FUNC] to conrm and exit
9.2 H-DIM Microphone keypad backlight setup
1. Hold [FUNC] key for over 2S to enter SELECT MENU interface.
2. Press [P4],[P6] or turn channel knob to choose menu list. Press [P5] can fast turn page.
3. Press [PUSH] to enter HANDY KEY menu list. choose NO.1 function, then press [PUSH]
to enter value setting. the menu value in LCD turns to green color.
4. Turn channel knob to choose wanted setting. The microphone keypad backlight has
OFF-31 total 32 brighness level. OFF turn off backlight
5. Press [PUSH] button or [P3] key to store setting and exit.
9.3 H-PA H-PD Microphone self-dene keypad setup
1. Hold FUNC key for over 2S to enter SELECT MENU interface
2. Press [P4],[P6] or turn channel knob to choose menu list. Press P5 can fast turn page.
3. Press [PUSH] to enter HANDY KEY menu list.choose NO.2-5 function, then press
[PUSH] to enter value setting. the menu value in LCD turns to green color
4. Turn channel knob to choose wanted setting.
5. Press [PUSH] button or [P3] key to store setting and exit.
23
10. PROGRAMMING SOFTWARE
INSTALLING AND STARTINGSOFTWARE I
Install USB Cable Driver Programme
1. Click start menu in computer, under “ALL PROGRAMS” menu, choose and click “USB
To Com port” in AT-778UV program, install “USB To Com port” driver by indication.
2. Connect the optional PC55 USB Programming cable to USB port in PC with transceiver.
3. Double click AT-778UV shortcut or click AT-778UV inprocedure index of start menu,
choose serial com port as indicated then click OK to start programming software.
4. According to instruction,select correct"COM Port", then click "OK" to start programming
software.
»Even in same computer,the selective COM Port is different when USB cable
connects with different USB port
You shall install software before connecting the USB cable line. Switch on transceiver
before writing frequency.You had better not switch on or off the power supply of
transceiver when it is connected with computer, otherwise, it will make transceiver unable
to read or write frequency. In this case, you have to turn off programming software, pull
out USB cable. then reinsert USB cable and open software, then rechoose COM Port, it
will turn into normal operation. Therefore, please connect transceiver with computer after
switching on the transceiver. Don't restart transceiver power when it is connected with
computer.
24
11. MAINTENANCE
11.1 Default Setting after Resetting
Frequency band VHF UHF
VFO frequency 145.150MHz 431.150MHz
Memory channel -- --
Offset direction -- --
Offset frequency 600KHz 5MHz
Channel step 10KHz 10KHz
CTCSS encode and decode -- --
CTCSS tone frequency 88.5Hz 88.5Hz
DCS encode and decode -- --
DCS Code 000N 000N
Output power HI HI
TOT 3 3
APO OFF OFF
VOL 28 28
Squelch Level 3 3
11.2 Trouble Shooting
Problem Possible Causes and Potential Solutions
(1) Power is on, nothing
appears on Display
(2) Fuse is blown
(4) No sound comes from
speaker
(5) Key and Dial do not
function
(6) No Scan Did not list the channel in the scan when programmed
The whole band with noise
after programmed
Communication range was
short, bad sensitivity
Can not talk with other
members within the group
+ and - polarities of power connection are reversed. Connect
red lead to plus terminal and black lead to minus terminal of
DC power supply
Check and solve problem resulting in blown fuse and
replace fuse with new fuse
• Squelch is muted. Decrease squelch level.
• Tone or CTCSS/DCS squelch is active. Turn CTCSS or
DCS squelch off
Key-lock function is activated. Cancel Key-lock function
The squelch has opened during programmed
a. Check the antenna is well or not, and check the antenna
port whether well connected.
b. Antenna connector has debris or damaged. Whether set
Low power
a. Frequency/channel different, pls modify
b. CTCSS/DCS different, pls reset
c. Out of the communication range
25
12. SPECIFICATIONS
GENERAL
Frequency Range VHF: 136-174MHz UHF: 400~490MHz
Number of Channels 200 channels
Channel Spacing 25K (Wide Band) 20K(Middle Band) 12.5K (Narrow band)
Phase-locked Step
Operating Voltage 13.8V DC ±15%
Squelch Carrier/CTCSS/DCS
Frequency Stability ±5 ppm
Operating Temperature -20℃~+60
Dimensions(mm) 124 (W) x 163(D) x 39 (H)
Weight about 0.64Kg
»Specifications are subject to change without notice due to advancements in
technology.
Sensitivity (12dB Sinad) ≤0.25μV ≤0.35μV
Adjacent Channel
Selectivity
Audio Response +1~-3dB(0.3~3KHz) +1~-3dB(0.3~2.55KHz)
Hum & Noise ≥45dB ≥40dB
Audio distortion ≤5%
Audio power output >2W@8
2.5KHz, 5KHz, 6.25KHz, 10KHz, 12.5KHz, 20KHz, 25KHz,
30KHz, 50KHz
℃
TRANSMITTER
Wide band Narrow band
≥60dB ≥60dB
RECEIVER
Wide band Narrow band
Power Output 25W / 15W / 5W
Modulation 16KΦF3E 11KΦF3E
Adjacent Channel Power≥70dB ≥60dB
Hum & Noise ≥40dB ≥36dB
Spurious Emission ≥60dB ≥60dB
Audio Response +1~-3dB(0.3~3KHz) +1~- 3dB(0.3~2.55KHz)
Audio Distortion ≤5%
26
13. ATTACHED CHART
52 groups CTCSS Tone Frequency(Hz)
No. Freq.(Hz) No. Freq.(Hz) No. Freq. (Hz) No. Freq. (Hz) No. Freq. (Hz)
1 62.5 12 94.8 23 136.5 34 177.3 45 218.1
2 67.0 13 97.4 24 141.3 35 179.9 46 225.7
3 69.3 14 100.0 25 146.2 36 183.5 47 229.1
4 71.9 15 103.5 26 151.4 37 196.2 48 233.6
5 74.4 16 107.2 27 156.7 38 189.9 49 241.8
6 77.0 17 110.9 28 159.8 39 192.8 50 250.3
7 79.7 18 114.8 29 162.2 40 196.6 51 254.1
8 82.5 19 118.8 30 165.5 41 199.5 52
9 85.4 20 123.0 31 167.9 42 203.5
Self-
dene
10 88.5 21 127.3 32 171.3 43 206.5
11 91.5 22 131.8 33 173.8 44 210.7
27
1024 groups DCS Code
Code
DSC
Code
DSC
No.
(Octal)
1.
000
9.
010
17.
020
25.
030
33.
040
41.
050
49.
060
57.
070
65.
100
73.
110
81.
120
89.
130
97.
140
105.
150
113.
160
121.
170
129.
200
137.
210
145.
220
153.
230
161.
240
169.
250
177.
260
185.
270
193.
300
201.
310
209.
320
217.
330
225.
340
233.
350
241.
360
249.
370
257.
400
265.
410
273.
420
281.
430
289.
440
297. 450
305. 460
No.
2.
10.
18.
26.
34.
42.
50.
58.
66.
74.
82.
90.
98.
106.
114.
122.
130.
138.
146.
154.
162.
170.
178.
186.
194.
202.
210.
218.
226.
234.
242.
250.
258.
266.
274.
282.
290.
298.
306.
(Octal)
001
011
021
031
041
051
061
071
101
111
121
131
141
151
161
171
201
211
221
231
241
251
261
271
301
311
321
331
341
351
361
371
401
411
421
431
441
451
461
Code
No.
3.
11.
19.
27.
35.
43.
51.
59.
67.
75.
83.
91.
99.
107.
115.
123.
131.
139.
147.
155.
163.
171.
179.
187.
195.
203.
211.
219.
227.
235.
243.
251.
259.
267.
275.
283.
291.
299.
307.
(Octal)
002
012
022
032
042
052
062
072
102
112
122
132
142
152
162
172
202
212
222
232
242
252
262
272
302
312
322
332
342
352
362
372
402
412
422
432
442
452
462
DSC
Code
No.
4.
12.
20.
28.
36.
44.
52.
60.
68.
76.
84.
92.
100.
108.
116.
124.
132.
140.
148.
156.
164.
172.
180.
188.
196.
204.
212.
220.
228.
236.
244.
252.
260.
268.
276.
284.
292.
300.
308.
DSC
(Octal)
003
013
023
033
043
053
063
073
103
113
123
133
143
153
163
173
203
213
223
233
243
253
263
273
303
313
323
333
343
353
363
373
403
413
423
433
443
453
463
Code
No.
5.
13.
21.
29.
37.
45.
53.
61.
69.
77.
85.
93.
101.
109.
117.
125.
133.
141.
149.
157.
165.
173.
181.
189.
197.
205.
213.
221.
229.
237.
245.
253.
261.
269.
277.
285.
293.
301.
309.
DSC
(Octal)
004
014
024
034
044
054
064
074
104
114
124
134
144
154
164
174
204
214
224
234
244
254
264
274
304
314
324
334
344
354
364
374
404
414
424
434
444
454
464
Code
No.
6.
14.
22.
30.
38.
46.
54.
62.
70.
78.
86.
94.
102.
110.
118.
126.
134.
142.
150.
158.
166.
174.
182.
190.
198.
206.
214.
222.
230.
238.
246.
254.
262.
270.
278.
286.
294.
302.
310.
DSC
(Octal)
005
015
025
035
045
055
065
075
105
115
125
135
145
155
165
175
205
215
225
235
245
255
265
275
305
315
325
335
345
355
365
375
405
415
425
435
445
455
465
Code
No.
7.
15.
23.
31.
39.
47.
55.
63.
71.
79.
87.
95.
103.
111.
119.
127.
135.
143.
151.
159.
167.
175.
183.
191.
199.
207.
215.
223.
231.
239.
247.
255.
263.
271.
279.
287.
295.
303.
311.
DSC
(Octal)
006
016
026
036
046
056
066
076
106
116
126
136
146
156
166
176
206
216
226
236
246
256
266
276
306
316
326
336
346
356
366
376
406
416
426
436
446
456
466
Code
No.
8.
16.
24.
32.
40.
48.
56.
64.
72.
80.
88.
96.
104.
112.
120.
128.
136.
144.
152.
160.
168.
176.
184.
192.
200.
208.
216.
224.
232.
240.
248.
256.
264.
272.
280.
288.
296.
304.
312.
DSC
(Octal)
007
017
027
037
047
057
067
077
107
117
127
137
147
157
167
177
207
217
227
237
247
257
267
277
307
317
327
337
347
357
367
377
407
417
427
437
447
457
467
28
313.
321.
329.
337.
345.
353.
361.
369.
377.
385.
393.
401.
409.
417.
425.
433.
441.
449.
457.
465.
473.
481.
489.
497.
505.
470
500
510
520
530
540
550
560
570
600
610
620
630
640
650
660
670
700
710
720
730
740
750
760
770
314.
322.
330.
338.
346.
354.
362.
370.
378.
386.
394.
402.
410.
418.
426.
434.
442.
450.
458.
466.
474.
482.
490.
498.
506.
471
501
511
521
531
541
551
561
571
601
611
621
631
641
651
661
671
701
711
721
731
741
751
761
771
315.
323.
331.
339.
347.
355.
363.
371.
379.
387.
395.
403.
411.
419.
427.
435.
443.
451.
459.
467.
475.
483.
491.
499.
507.
472
502
512
522
532
542
552
562
572
602
612
622
632
642
652
662
672
702
712
722
732
742
752
762
772
316.
324.
332.
340.
348.
356.
364.
372.
380.
388.
396.
404.
412.
420.
428.
436.
444.
452.
460.
468.
476.
484.
492.
500.
508.
473
503
513
523
533
543
553
563
573
603
613
623
633
643
653
663
673
703
713
723
733
743
753
763
773
317.
325.
333.
341.
349.
357.
365.
373.
381.
389.
397.
405.
413.
421.
429.
437.
445.
453.
461.
469.
477.
485.
493.
501.
509.
474
504
514
524
534
544
554
564
574
604
614
624
634
644
654
664
674
704
714
724
734
744
754
764
774
318.
326.
334.
342.
350.
358.
366.
374.
382.
390.
398.
406.
414.
422.
430.
438.
446.
454.
462.
470.
478.
486.
494.
502.
510.
475
505
515
525
535
545
555
565
575
605
615
625
635
645
655
665
675
705
715
725
735
745
755
765
775
319.
327.
335.
343.
351.
359.
367.
375.
383.
391.
399.
407.
415.
423.
431.
439.
447.
455.
463.
471.
479.
487.
495.
503.
511.
476
506
516
526
536
546
556
566
576
606
616
626
636
646
656
666
676
706
716
726
736
746
756
766
776
320.
328.
336.
344.
352.
360.
368.
376.
384.
392.
400.
408.
416.
424.
432.
440.
448.
456.
464.
472.
480.
488.
496.
504.
512.
477
507
517
527
537
547
557
567
577
607
617
627
637
647
657
667
677
707
717
727
737
747
757
767
777
29
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