Changtaiwei Electronics M-880B User manual

US
Walkie Talkie
User Guide

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1
External Speaker/
Microphone
Backlit LCD Display
Call/Monitor Button
Button
Microphone
Speaker
. Antenna
2.
3.
4.
5. Up
6.
7.
8. Down Button
9. Menu/Lock Buttonn
10.Power /Scan Button
11.PTT(Pull to talk) Button
12.Wrist Strap Connection
13. Belt Clip
14. Battery Compartment
15. Battery Door Latch
Read this operating instruction carefully before using
your two way radio, including the part on Product
Safety and Important Notice.
CAUTION

Features
• 22 Channels
• 121 Privacy Codes
• Hands-Free Operation
(VOX)
• Scan
• Backlit LCD Display
• Call Alert
• Button Lock
• Speaker/Microphone/
Jack
• Roger Beep
• Battery/Power Saver
• Keystroke Tones
• Battery Level Indicator
• Low Battery Audible Alert
• Auto Squelch
• Belt Clip
(38 CTCSS codes/83 DCS codes)
Channels
Ten selectable tones
Selectable On/Off
Product Features
Maximum range may vary and is based on
unobstructed line of sight communication- -
under ideal conditions.
Backlit LCD Display
1.Battery Level Indicator
2.Hi Low Power Icon/
3.Lock Icon
4.Scan Icon
5.Roger Beep Icon
6.DCS CTCSS Privacy Code Numbers/
7.Transmit Icon
8.VOX Icon
9.Channel Numbers
1
2345
6
87
9

Installing Batteries
To install or replace batteries:
1.
2.
3.
Remove the belt clip by pulling the tab and
sliding it up.
Pull the battery door lock tab up to release the
battery cover. Insert 3 AA batteries.
Put the battery cover back into place. Snap the
lock tab and belt clip back into place.
" "
Product Features
Channel Frequency(MHz) Channel Frequency(MHz)
1 462.5625 12 467.6625
2 462.5875 13 467.6875
3 462.6125 14 467.7125
4 462.6375 15 462.5500
5 462.6625 16 462.5750
6 462.6875 17 462.6000
7 462.7125 18 462.6250
8 467.5625 19 462.6500
9 467.5875 20 462.6750
10 467.6125 21 462.7000
11 467.6375 22 462.7250
1.Do not mix old and new batteries
2.Do not mix alkaline, standard (carbon-zinc)
or rechargeable (nickel-cadmium) batteries.

Quick Start
1. Press and hold the Power/ can button
to turn on your radio.
2. Press the Menu, Up or Down
button to select a channel.
S
Press the
Both radios must be tuned to the same
channel/privacy code to communicate.
3. Press and hold the PTT button while
speaking into the microphone.
4. When finished talking, release the PTT
button and listen for a response.
Turning on Your Radio
Press and hold the Power/Scan button until you hear
a series of audible tones indicating the radio is on.
Your radio is now in Standby mode,ready to receive
transmissions. The radio is always in Standby mode
except when the Talk, Call or Menu/Lock buttons
are pressed.
Battery Low
Battery Low
When battery power is low, the final bar in the Battery
Low icon will blink and an audible tone will sound twice
before the radio shuts off. Your batteries should be
replaced or recharged, if using rechargeable batteries.
The radio will display flashing battery icon
while charging.
Auto Battery Save
If there are no transmissions within 10 seconds,the radio will
automatically switch to Battery Save mode and the Power Saver
icon will flash in the display. This will not affect the radio’s ability to
receive incoming transmissions.

1. Press and hold the PTT button.
2. With the microphone about two inches (2.5-5 cm) from your mouth,
speak in a normal voice.
3. Release the PTT button when you are finished talking and listen
for a response.You cannot receive incoming calls while pressing
the PTT button.Both radios must be tuned to the same
channel/privacy code to communicate.
Communicating with Another Person
With the radio on, select any of the 22 channels by
pressing enu and the Up or Down button.
Both radios must be tuned to the same channel to
communicate.
M
To Select a Channel
Release the PTT button to receive incoming transmissions. Your
radio is always in Standby mode while the Talk or Call buttons are
not pressed.
Listening for a Response
To Adjust Volume
The radio is in Standby mode.
Press the Up button to increase the speaker volume.
Press the Down button to decrease the speaker
volume.
The speaker volume level is indicated by the numbers
1-8 displayed.
Press and release the Call button.
The other person will hear a two second call tone.
This tone is used only to establish voice
communications.See page 7 on how to select
between ten call tone settings.
Call Button

The Lock function locks the Up, Down and Menu
buttons to prevent accidental operation.
To turn the lock on or off:
Press and hold the Menu/Lock button for three
seconds.
A double beep sound is used to confirm your lock
on or off request. When in Lock mode,the Lock icon
will be displayed.
–
Lock Function
By scrolling through the MENU function, you will be able to
select or turn on preferred features of your radio. When
scrolling through the Menu function, your radio features
will be displayed in the same predetermined order:
Set CTCSS/ Privacy Codes
Set
Set Sensitivity 1-3 and Vox
Set Double channel monitor
Set SQUELCH Level 1-6
Set TX POWER LOW/HI
Set Channels
DCS
Call Tones 1-10
Vox Off
Scrolling Through the Menu Function
Privacy Codes
Your radio incorporates two advanced coded squelch systems
that can help to reduce interference from other users on any given
channel. CTCSS (Continuous Tone Coded Squelch System)
provides 38 privacy codes and DCS (Digitally Coded Squelch)
provides 83 privacy codes. This provides a total of 121 Privacy
Codes. Either system can be used on all channels, but both
systems
Lock Icon
To successfully communicate using a privacy code, both the
sending and receiving radios must be tuned to the same channel
and to the same privacy code system (CTCSS or DCS)and privacy
code number. Each channel will remember the last privacy code
system and number you select.The privacy code 00 is not a privacy
code, but allows all signals to be heard on a channel that is set to
00 on both the CTCSS and DCS systems.

To select a CTCSS/DCS privacy code:
1. After selecting a channel, press the Menu/Lock
button until the small numbers next to the channel
number flash on the display.
2. Press using the Up or Down button to select
a privacy code. You can hold the Up or Down
button for fast advance.
3. When your desired CTCSS/DCS privacy code is
displayed
, choose one of the following:
a. Press the Menu/Power button to enter the new
setting and proceed to other functions.
b. Press PTT button to enter the new setting and
return to Standby mode.
(CTCSS:01 through 38,DCS:39 through
121)
Set CTCSS/DCS Privacy Codes
Privacy Code
You can choose between ten different Call Tone
Settings to transmit a call alert.
To change a call tone setting:
1. Press the Menu/Lock button until the letter
“CA” and the current call tone number
(01 through 10) is displayed. The current call
tone will sound for three seconds.
2. Press the Up or Down button to hear the other
call tone settings.
3. Choose one of the following:
a. Press the Menu/Lock button to enter the new
setting and proceed to other functions.
b. Press PTT button to enter the new setting and
return to Standby mode.
Ten Call Tone Settings
Call Tone Setting
Voice Activated Transmit (VOX)
In VOX mode, your radio can be used “hands-free,” automatical ly
transmitting when you speak. You can set the VOX sensitivity level to
fit the volume of your voice and avoid transmissions triggered by
background noise.

To turn VOX mode off:
1. Press the Menu/Lock button until the VOX icon
on the display.
2. Press the Up or Down button to turn VOX Off.
The current Of” setting is displayed.
3. Choose one of the following:
a. Press the Menu/Lock button to enter the new
setting and proceed to other functions.
b. Press PTT button to enter the new setting and
return to Standby mode.
"
The current VOX sensitivity level is displayed
with letters “ ” and a Number 1 through 3,
with Number 3 being the most sensitive level
and Number 1 being the least sensitive level.
2. Press the Up or Down button to change the setting.
3. Choose one of the following:
a. Press the Menu/Lock button to enter the new
setting and proceed to other functions.
b. Press PTT button to enter the new setting and
return to Standby mode.
VOX Icon
Dual Channel Monitor function
In stand by the Radio is set on one channel with CTCSS DCS
code The will only receive signals transmitted on that
channel with the CTCSS DCS code
Dual Channel Monitor DCM allows you to monitor a second
channel
1. Press five times until CH displays, the
current
channel flashes.
2. Press UP or DOWN to set the monitor channel.
3. to save the double channel monitor setting.
- , /
.
/ .
( )
.
Radio
the Menu/Lock button
the button
Press the PTT button
Setting the SQUELCH Level 1-6
1. Press six times or until SL displays.
2. Press to select the receive sensitivity
level.
01 = High receive Sensitivity
02~05 = Medium receive Sensitivity
06 = Low receive Sensitivity.
3.
the Menu/Lock button
the UP or DOWN button
Press the PTT button to save the SQUELCH Level setting.

To turn roger beep off:
1. Press and hold the Power button turn the radio off.
2. Press and hold the Power+Up button at the same
time until the Roger Beep icon not displayed.
To turn roger beep on :
1. Press and hold the Power button turn the radio off.
2. Press and hold the Power+Up button at the same
time until the Roger Beep icon displayed." "
To turn on :
1. Press and hold
Press the Power+down button
to
To turn key tone off:
1. Press and hold the Power button turn the radio off.
2. Press and hold the Power+down button at the same
time to turn the Radio on.
key tone on
the Power button turn the radio off.
2. and hold at the same
time turn the Radio on.
Roger Beep Confirmation Tone
Your listener will hear an audible tone when you release the PTT
button.This alerts the other party that you are finished talking and
it is OK for them to speak.
Key Tone On/Off
When Key Tone is On, an audible tone will sound each time a button
is pressed.
Roger Beep On
Setting the TX POWER LOW/HI
1. Press seven times until pr displays.
2. Press UP or DOWN to select the Lo or HI level.
3. Press PTT to save the TX POWER LOW/HI setting.
the Menu/Lock button
the button
the button
Channel Scan
Your radio can automatically scan channels.
To scan channels:
1. Press and release the Scan button until the Scan icon and the
channel numbers appear on the display.
2. Press and hold the Scan button to begin scanning channels.
The radio ignores specific privacy codes while scanning channels.
The Scan icon will continue to be displayed when scan is on. Your

.
.
.
.
radio will continue to scan all channels and stop if an incoming
transmission is detected Your radio will remain on that channel for
10 seconds
.
.
During scanning (while receiving an incoming transmission),
you can choose from the following:
a. Press and hold the PTT button to communicate on that channel
Your radio will remain on that channel and return to Standby mode
b. Press the Up or Down button to resume scanning channels
c. Press and hold the Scan button to return to Standby
Scan Channels
FCC Statement
This equipment has been tested and found to comply with the limits for Part 15
of the FCC rules. These limits are designed to provide reasonable protection
against harmful interference in a residential installation. This equipment
generates, uses and can radiate radio frequency energy and, if not installed
and used in accordance with the instructions, may cause harmful interference
to radio communications.However, there is no guarantee that interference
will not occur in a particular installation. If this equipment does cause
harmful interference to radio or television reception, which can be
determined by turning the equipment off and on,the user is encouraged to try
to correct the interference by one or more of the following measures:
•Reorient or relocate the receiving antenna.
•Increase the separation between the equipment and receiver.
•Connect the equipment to an outlet on a circuit different from that
to which the receiver is connected.
•Consult the dealer or an experienced radio/TV technician for help.
Any changes or modifications not expressly approved by the party responsible
for compliance could void the user’s authority to operate the equipment.
This device complies with part 15 of the FCC Rules. Operation is
subject to the condition that this device does not cause harmful interference.
RF Exposure Warning
This equipment must be installed and operated in accordance with provided
instructions and must not be co-located or operating in conjunction with any
other antenna or transmitter. End-users and installers must be provide with
antenna installation instructions and transmitter operating conditions for
satisfying RF exposure compliance. The SAR limit adopted by US is 1.6 W/kg
averaged over 1 grams of tissue. The highest SAR value for this device type
when properly worn on the body is 0.6W/kg.