Crystal DB477C User manual

1
DB477C
Version 3

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Thank you for choosing this vehicle transceiver,
always strives to provide high quality products, And this transceiver is
no exception. As you learn how to use this transceiver, you will nd that
your unit is very user friendly. For example, each time you
select a menu item, you will see a text message on the display that lets
you know what you are conguring.
Though it is user friendly, this transceiver is technically complicated
and some features may be new to you. Consider this manual to be a
personal tutorial from the designers, allow the manual to guide you
through the learning process now, then act as a reference in the coming
years.
Do not attempt to configure your transceiver while driving, it is
dangerous.
This transceiver is designed for a 13.8V DC power supply. Don't use
a 24V battery to power on the transceiver.
Do not place the transceiver in excessively dusty, humid or wet
areas, nor unstable surfaces.
Please keep it away from interferential
devices (such as TV, generator etc.).
Do not expose the transceiver to long
periods of direct sunlight nor place it close
to heating appliances.
If an abnormal odor or smoke is detected
coming from the transceiver, turn OFF
the power immediately. Contact a Crystal
service agent or your dealer.
Please observe the following precautions to prevent re, personal injury,
or transceiver damage:
Precautions

3
CONTENTS
New and Innovative Features..............................................5
Supplied Accessories/Optional Accessories.....................6
Supplied Accessories.......................................................................6
Initial Installation ..................................................................7
Mobile Installation ............................................................................7
DC Power Cable Connection ...........................................................8
Power Supply Voltage Display .........................................................10
Antenna Connection ........................................................................10
Accessories Connections.................................................................11
Getting Acquainted ..............................................................12
Front panel.......................................................................................12
Rear panel .......................................................................................13
Display .............................................................................................13
Microphone ......................................................................................14
Amateur Transceiver Mode ......................................................15
Basic Operations .................................................................16
Switching the Power On/Off ............................................................ 16
Adjusting the Volume ......................................................................16
Switch between VFO and Channel mode .......................................16
Adjusting Frequency/Channel Through Selector Knob....................16
Receiving .........................................................................................16
Transmitting .....................................................................................16
Transmitting Tone-Pulse ..................................................................17
Transmitting Optional Signaling ...................................................... 17
Channel Edit ....................................................................................17
Channel Delete ................................................................................17
Shortcut Operations.............................................................18
Squelch Off/Squelch Off Momentary................................................18
Squelch Level Setup ........................................................................18
Frequency/Channel Scan ................................................................18
Channel Scan ..................................................................................18
CTCSS/DCS Encode and Decode Setup ........................................18
CTCSS Scan....................................................................................19
DCS Scan ........................................................................................19
Compander (Decrease the background noise and enhance audio
clarity ..................................................................................................19
Keypad Lockout ...............................................................................20
Current Voltage Enquiry...................................................................20
Auto-Dialer Setup.............................................................................20
Transmitting Edited DTMF Tones in the Auto-dialer Memory........... 20
General Setting.....................................................................21
DTMF, DTMF ANI, 2Tone or 5Tone Signaling .................................. 21
Sending 2-Tone Call.........................................................................21
Sending 5-Tone Call.........................................................................22
Sending DTMF call ..........................................................................22
Signaling Combination Setup...........................................................22
TX OFF Setup..................................................................................23
Busy Channel Lockout .....................................................................23
Editing Channel Name .....................................................................23
Reverse TX/RX ................................................................................23

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CONTENTS
Talk Around ......................................................................................24
Voice Compander ...........................................................................24
Scrambler Setup (Encryption)..........................................................22
Radio's DTMF SELF ID ENQUIRY .................................................24
Voice Prompt....................................................................................25
TOT (Time-out timer) ....................................................................... 26
APO (Auto power off).......................................................................26
DTMF Transmitting Time..................................................................26
Squelch Level Setup ........................................................................26
Scan Dwell Time Setup....................................................................27
LCD Backlight ..................................................................................27
Pilot Frequency ................................................................................27
Display Mode Setup.........................................................................27
PIN Setup ........................................................................................28
Address List .................................................................................... 28
Factory Default.................................................................................28
Microphone Operation .........................................................29
Function Setup By Microphone Keypad...........................................29
Squelch Level ..................................................................................29
Optional Signaling ........................................................................... 29
Scan Skip ........................................................................................ 30
Frequency/Channel Scan ...............................................................30
Busy Channel Lockout .....................................................................30
Reverse TX/RX ................................................................................30
TOT (Time-out timer)........................................................................30
CTCSS/DCS Encode and Decode...................................................31
Talk Around .....................................................................................31
Voice Prompt....................................................................................31
LCD Backlight ................................................................................. 31
Long-distance Anti-theft Alarm ..........................................32
Cable Clone ..........................................................................32
Maintenance..........................................................................33
Default Setting after Resetting .........................................................33
Trouble Shooting..............................................................................33
Specications .......................................................................33
Attached Chart......................................................................34
50 groups CTCSS Tone Frequency(Hz) ..........................................34
1024 groups DCS Code...................................................................34
Australian Broardcasting Requirements ...........................36
Transmit and Receive Procedure....................................................36
Radio Operation and EME Exposure..............................................36
Electromagnetic Interference/Compatibility......................................36
Aircraft..............................................................................................36
Medical Devices...............................................................................36
General warnings.............................................................................37
Transmitting ....................................................................................37
Call Ring Tone..................................................................................37
Roger Beep......................................................................................37
Duplex Operation Via Repeaters and Licence information...............38

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New and Innovative Features
DB477C Mobile Radio has a stylish and sturdy housing, advanced and reliable functions and is especially designed for drivers while pusuing the
company philosophy of innovation and practicality. More functions as follows:
Display on a large LCD with adjustable brightness, convenient
for night-time use..
Buttons are distributed reasonably for convenient operation.
Using superior quality material, better technology and high
quality heatsink to ensure stable and durable operation.
Programming different CTCSS, DCS, 2Tone, 5Tone in per
channel, rejecting extra calling from other radios.
Various scan functions including CTCSS/DCS Scan function.
Using 5Tone to send Message, Emergency alarm, Call all, ANI,
Remotely kill, Remotely Waken, etc.
Automatic calling Identication function by DTMF--ANI or 5Tone-
-ANI .
Scramble function (Optional).
Compander function for decrease the background noise and
enhance audio clarity, it can set compander ON/OFF per
channel.
Theft alarm provides extra safety.

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Supplied Accessories/Optional Accessories
Supplied Accessories
After carefully unpacking the transceiver, identify the items listed in the
table below. We suggest you keep the box and packaging.
Transceiver
Spare Fuses (one pair)
[QF-01]
User Manual
Microphone (QHM-03)
(with DTMF keyboard)
Mobile Mounting
Bracket (QMB-01)
DC Power Cable with
Fuse Holder(QPL-01)
Hardware Kit for Bracket
Black screws
(M4X8mm)
4PCS(QSS-01A)
Tapping screws
(M5X8mm)
4PCS(QSS-01B)
S-Washer
(QSS-01D)

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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 self-
tapping screws (4pcs) and at washers (4pcs).
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.
Car body
Washer (M5)
Tapping screw
(M5x20mm)
Mounting bracket
Initial Installation
Mobile installation
Determine the appropriate angle of the transceiver, using the 3 screw
hole positions on the side of the mounting bracket.

8
6. Connect the DC power cable to the transceiver's power supply
connector.
Press the connectors rmly together until the locking tab clicks.
If the ignition-key on/off feature is desired (optional feature), use the
Red
Black
Ext. Power jack
DC power cable
Initial Installation
DC Power Cable Connection
Mobile Operation
In some cars,the 12V plug is always powered. If this is the case, you cannot
use it for the ignition key on/off function.
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 sufficient current capacity. If the current
to the transceiver is insufficient, the display may darken during
transmission, or transmitting output power may drop excessively.
7. When the ignition key is turned to ACC or ON(Start) position with
the radio turned off, the power switch illuminates. The illumination
will be turned off when the ignition key is turned to the off position.
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 remove negative (-)
terminal 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.
5. Reconnect any wiring removed from the negative terminal.
optional 12V Plug cable. Connect one of the cables between the ACC
terminal or a 12v Plug that operates with the vehicle ignition or ACC
switch on the vehicle and EXT POWER jack on the rear side of the
unit.
Locate the power input connector as close to the transceiver as possible.

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Red
Black
Regulated power supply
DC power cable with fuse holder (QPL-01)
Regulated
power supply
Ext. Power jack
ACC terminal
12V Plug connection
Initial Installation
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.
In order to use this transceiver for fixed 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 (not supplied).
Do not substitute a cable with smaller gauge wires.
To turn on the unit, press the power switch manually while it is
illuminated. (While ignition key is at ACC or ON position)
8. When the ignition key is turned to ACC or ON position with the
radio's power switch on, the unit turns on automatically and the
power switch will be lit. Turn the ignition key to OFF position or
manually turn the power switch off to shut down the radio.
9. Using extra cable, power consumption:5MAH.
10.
Without this function, user can turn on/off radio by Power knob.
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.
Fixed Station Operation

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Initial Installation
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 autho-
rized dealer or an authorized service
center for assistance.
Only use fuses of the specified type and rating, otherwise the
transceiver could be damaged.
After connecting the transceiver to the power supply, the supply voltage
can be displayed on LCD by pressing the FUN key together with the
key.
The display immediately changes as the voltage supply changes, It also
displays voltage during transmission.
The transceiver will return to its normal operation when the power is
switched ON or repeat above operation.
Before operating, install an efcient, 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 efficiency of the antenna
system and can cause interference to nearby broadcast television
receivers, radio receivers, and other electronic equipment.
Fuse Location Fuse Current Rating
Transceiver 15A
Supplied Accessory DC
power cable 20A
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 sufcient reserves to start the vehicle. Avoid
using the transceiver in these conditions.
The range of displayed voltage is only from 7V to16V DC, because the
displayed value is estimated, please use a voltmeter when a more precise
reading is desired.
Power supply voltage Display
Antenna Connection
Important
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:

11
Ground
Microphone
connector
Microphone [QHM-03] Antenna
(not included)
External speaker (not included)
Error
Initial Installation
External Speaker (not included)
Microphone
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.
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 rmly on the plug until the locking tab clicks. Attach the
supplied microphone hanger in an appropriate location using the
screws included in the screw set.
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.
Optional Accessory Connections
Mute Out
Capable of muting the car stereo when you receive incoming traffic on
the tranceiver. This transceiver has a mute out function allowing you to
hardwire directly to a compatable head unit with existing mute functionality.

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NO. KEY FUNCTION
1Pow(Power) Power on/Off
2VOL Adjust Volume Key
3Main Dial Change frequency, memory channel and scan
direction etc.
4FUN/SET Function Key
5V/M/MW Switches between VFO mode and Channel
mode
6MHz/SHIFT Step Size Key ( step:1MHz)
7TS/DCS/LOCK Sets CTCSS and DCS value
8CAL/H/L Call key
9SQL/D Squelch off
10 Data Terminal
Data and Cloning port
11 TX lights during Transmitting
12 Mic.connector Microphone connection port
NO. KEY FUNCTION
4FUN/SET Conrms the selective functions and exit
5V/M/MW Stores data into channels
7TS/DCS/LOCK Sets Keypad lock function
9SQL/D Compander mode on/off
NO. KEY FUNCTION
1
Pow(Power) Reset to factory default settings
5V/M/MW Erase the memory
7TS/DCS/LOCK Auto dialer
8CAL/H/L
Enters clone data function mode
9SQL/D Enters power supply voltage indication mode
NO. KEY FUNCTION
4FUN/SET Press and hold for 2s to enter the Setting
mode
9SQL/D Monitor mode
Getting Acquainted
Front panel Press key until icon appears then press the following
key.
Press key and following key together to activate
following function:
Functions that require continuous pressing following key
to be activated
Basic Functions

13
21
NO. KEY FUNCTION
1Ext. Power
Jack
Terminal for connecting optional cable QCC01 for
use with ignition key On/Off function.
The radio will auto power on when car is driving.
The radio will auto power off when car stops.
2Ext.Speaker
Terminal Terminal for optional external speaker SP01
3Antenna
Connector Connection for 50Ω coaxial cable and antenna.
NO. KEY FUNCTION
1 SQL  Squelch level.
2 MIn channel mode.
3  Indicates the channel number in channel mode.
4Decimal point
Channel skip.
5Decimal point Indicates the decimal point of frequency and the
scanning function.
6  Indicates the frequency or memory name.
7Signal is being received or monitor.
8Signal strength of receiving and transmitting.
9Compander.
10 Keypad lock .
11 DCS Set DCS function.
12 Set CTCSS function.
13 + _Offset frequency direction.
14 Scramble.
15 A Auto power off.
19 Pressing key.
3
Getting Acquainted
DISPLAY
Rear panel
3
1
2
13 10
11
12
14
4567
8
9
15
19 13

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NO. KEY FUNCTION
1UP Increase frequency, channel number or setting value.
2DOWN Decrease frequency, channel number or setting value.
3PTT Press the PTT (Push-TO-Talk) key to transmit.
4Number Key Input VFO frequency or DTMF dial out etc..
5DTMF ON/
OFF Switches between DTMF dialing or function operating.
6LOCK Switch Locks out the UP、Down、Numerical keys and Function
keys.
7MIC Speak here during transmission.
KeyPadSerialData
+5V
DOWN
UP
MICGND
MIC
PTT
GND
microphone MIC Connector Diagram(in the front view of connector)
Getting Acquainted

15
According to practical application, you can set the radio works in
Professional Transceiver mode.
There are 2 levels operation menu to set functions as you need. It is easy
and convenient (From No.1 to No.15 are channel function setup, From
No.15 to No.29 are general setting setup).
A. Frequency + Channel mode: When set display as "FR", it
enters into Frequency+Channel mode, new setting of channel
operation and shortcut operation
1. Professional Transceiver Mode:When
set display mode as "CH", it enters
into Professional Transceiver mode.At
this mode, except scan, other shortcut
operation can't operate. And from No.1-
17 menu in function setting will be
auto-hidden.
If there is corresponding name for
current channel, the LCD will display
current channel name Otherwise, it
shows current channel number. (As pic 4) (As pic 5)
4. Under every mode, from No.18-29 menu in general setting can be
changed and saved.
C. VFO Mode(Frequency mode):
This mode shows only frequency on
the display. Shortcut operation and
Channel setting will be changed &
stored asthe latest value permanently.
Once the radio is turned off o r
changed to new VFO frequency, the latest setting is remained
until next change.(As pic 3)
Transceiver is programmed as professional
transceiver mode. You can't change through manual
operation from general setting.
(Pic 2)
(Pic 4)
(Pic 5)
can be temporarily used by user.
Once the radio is turned off or
switched to another 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)
(Pic 3)
PROFESSIONAL TRANSCEIVER MODE
(Pic 1)

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In standby, press key or Microphone's
key until appear , this indicates current
channel in channel mode. Repeat above
PWR KEY
Dial
Frequency
decrease
Frequency
increase
Min
Volume
Max
Volume
Basic Operations
Switching The Power On/O
Adjusting The Volume
Switch between VFO and Channel mode
Adjusting Frequency/ChannelTHROUGH SELECTOR KNOB
Receiving
According to the option selected during installation
Press the switch or turn the ignition key to
ACC (speed up) or ON (startup) position to power
on radio. Press the key for 1s or turn the
ignition key to OFF position to turn off.
When the channel you are operating is
called, the screen shows and field
intensity, in this way, you can hear the calling
from transmitting party.
1. Under frequency (VFO) mode, you can
change the current frequency to the
desired one through selector knob; Turn
clockwise to increase frequency; turn
counterclockwise to decrease. Every
gear will increase or decrease one step.
Press key, the decimal point of
Turn the VOL knob clockwise to increase the
audio level, counterclockwise to decrease.
During communication, volume can be adjusted more accurate.
5k, 6.25k, 8.33K,10k, 12.5k, 20k, 25k, 30k and 50k total nine step size
available for this radio.
If the transceiver has set at higher squelch level, it may fail to hear the calling.
operation to switch between Frequency mode
(VFO) and Channel mode.
frequency in screen will be auto-hidden. In this status, turn selector
knob or Microphone [ / ] key will increase or decrease
frequency quickly by 1MHz step.
2. Under channel mode, you can change the current channel to the
desired one through selector knob, clockwise turn to the forward
channel, anticlockwise turn to the backward channel. In relative
working mode, Microphone's [ / ] key has same
function for adjusting frequency and channel.
Transmitting
Press and hold key or press MIC's key to monitor for a while to
conrm the channel desired is not busy. Release or press Mic's
key to return standby status, then press and hold [PTT] key to speak into
microphone.
When the channel you are operating is called, the screen shows BUSY
and field intensity, you can't hear the calling from transmitting party,
it means current channel receives a matching carrier but unmatching
signaling(Refer to CTCSS/DCS encode and decode or Optional Signaling
setup).

17
Basic Operations
Transmitting Tone-Pulse
Transmitting OPTIONAL SIGNALING
Press and hold [PTT] key, then press Microphone [ ] key to
transmit current selected tone-pulse signal.
Press and hold [PTT] key, then press Microphone key or press
key in front panel or press Mic's key to transmit pre-stored and
selected DTMF/2Tone/5Tone optional signaling.
Channel Edit
Channel Delete
1. Under frequency mode (VFO), turn
selector knob to select the desired
frequency or input frequency by MIC's
numeric keys.
2. Press key to enter CTCSS/DCS
signaling setup, turn selector knob to
select the desired signaling.
3. Press key, LCD appears ,
icon and current channel number,
icon ashing means current channel is
1. Under channel mode, turn selector knob to select channel which
you want to delete.
2. Press key and key together, current channel will be
deleted and emitted a prompt voice. icon ashing means current
channel is deleted.
empty.
4. Turn selector knob to select the desired channel number to store.
5. Press key, , icon and channel number disappears and
emit a prompt voice, thus the channel storage succeed.
Please hold the microphone approximately 2.5-5.0cm from your lips,
and then speak into the microphone in your normal speaking voice to
get best timbre.
Press and hold [PTT] key, LED lights RED and power intensity showed in
screen indicates it is transmitting, release to receive.

18
Shortcut Operations
Squelch level Setup
Frequency/Channel Scan
Channel Scan
CTCSS/DCS Encode and Decode setup
Setting the radio to a tight squelch level, you can avoid unwanted signals
or noise, but you may not receive a weak signal. Therefore, it will be
better for you to select the normal squelch level.
In frequency (VFO) mode, this function is designed to monitor signal
of every communicative frequency point of transceiver "step size" you
have set.
Repeatedly press key to check whether set CTCSS/DCS encode
and decode in current channel or not.
1. While standby, press key and turn
selector knob until LCD appears
and current squelch level.
2. Turn selector knob or press MIC [
/ ] key to set desired squelch level.
3. Press any key except and
key to exit.
Frequency Scan
1. In VFO mode, press for 1s to
enter into frequency scan.
2. Turn selector knob or press Microphone
[ / ] key to change scan direction.
3. Press any key except and key to exit.
squelch o/squelch o momeNTARY
key programmed as Squelch Off or Squelch Off Momentary to
monitor the weak signal.
1. Squelch Off: Press key to disable squelch, press key
again to resume squelch.
2. Squelch Off Momentary: Press and hold key to disable
squelch, release key to resume squelch.
The above functions should be set in programme software.
1. When LCD appears icon, it means current channel with CTCSS
encode, turn selector knob or press Microphone's [ /
] key to select desired CTCSS encode.
2. When LCD appears and icon,
it means current channel with CTCSS
encode and decode, turn selector knob
or press Microphone's [ / ]
to select desired CTCSS code.
In channel mode, this function is designed to monitor signal in every
channel.
1. In channel mode, Press key for 1s to enter into channel scan.
2. Turn selector knob or press Microphone [ / ] key to
change scan direction.
3. Press any key except and key to exit.

19
Shortcut Operations
CTCSS SCAN
Repeatedly press key until LCD
displays and icons, then hold
key for 1S to enter into CTCSS scanning.
Once nding a matching CTCSS signaling, it
will stop for 15s then scan again.
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.
3. When LCD appears icon, it means
current channel can be set with DCS
encode and decode together, turn
selector knob or press Microphone's [ / ] to select
desired DCS encode and decode.
4. CTCSS:62.5-254.1, Total 51groups; DCS:000N-777I total 1024
groups. Nis positive code, Iis inverse code.
5. Press any key except , and keys to return into
standby status.
Repeatedly press key until LCD
displays DCS icons, then hold key for
1S to enter into DCS scanning. Once nding
a matching DCS signaling, it will stop for 15s
then scan again.
Compander function will decrease the background noise and enhance
audio clarity, especially in long range communication.
1. Press key, then press key
to turn on compander function, repeat
above operation again to turn off
compander function.
Compander (Decrease the background noise and ENHANCE
AUDIO CLARITY)
2. When LCD appears icon, enable
compander in current channel.
3. When LCD doesn't display icon, disable compander in current
channel.
DCS SCAN

20
1. Press key until LCD displays
icon, then press key until, LCD
displays icon, it indicates keypad
lockout function is valid.
2. Repeat above operation, icon disappears, it indicates keypad
lockout function is invalid.
This will automatically transmit pre-programmed and stored DTMF
tones. And they are often used to remote control electronic devices or
AUTOPATCH phone systems available on some repeater.
1. Press and hold key, then press key to enter the auto-
dialer enquiry mode, LCD displays current default data and current
group displayed on left. If no data in current group, it shows
"EMPTY".
1. Press and hold key, then press
key, LCD displays current battery voltage.
2. Repeat above operation to return into
VFO or Channel mode.
Avoiding unintentional operation, this function will lock main keys, all
keys except 、and key are invalid.
KEYPAD LOCKOUT
Current Voltage ENQUIRY
Auto-Dialer Setup
Shortcut Operations
This function will display Current Battery Voltage.
1. Press key, then press key to enter into auto-dialer
enquiry
2. Turn selector knob to select desired transmitting group
3. Press PTT or key to transmit current selected DTMF tones.
Transmitting Edited DTMF tones in the Auto-dialermemory
In voltage display mode, all functions and channel or frequency
selection are invalid.
2. Turn selector knob to choose group you
desired. Total:16 group, 01-16.
3. Presskey to enter into editing of
current group, press MIC's numeric
keys to set your desired data.
4. The display scrolls when the 7th digit
is entered. The numbers 0-9, --, A-D, *
and # can be stored up to a total of 23
digits.
5. After editing, press PTT or key to
send current group and store edited DTMF signaling. Press
to exit and store.