TTI TCB-881N User manual

4W MOBILE CB TRANSCEIVER
www.ttikorea.co.kr
TCB-881N

TCB-881N
ENGLISH
2
CONTENTS
1. Introduction ........................................3
2. SuppliedAccessories................................3
3. Installation..........................................3
4. Transceiver Controls and Functions . . . . . . . . . . . . . . . . . . 6
5.LCDDisplay....................................12
6.Microphone .....................................12
7.Menu Setting Mode .............................13
9. BandSelection .................................14
10.Trouble Shooting ................................15
11.CEDeclaration ...................................15
12.SafetyRequirement .............................16
13.Specification .....................................17
14.Restrictionsontheuse ..........................18
15.FrequencyTable ..................................19
1) Channel Selector .............................6
2) Dual Watch ........................................6
3) Memory Channel Selectors ..................7
4) Emergency / Noise Blanker Button ....8
5) LCD Display ......................................8
6) Scan/Lock Button ..............................8
7) AM/FM and LCR Button .....................9
8) CB/PA Selector ...................................9
9) ANL/OFF Selector ................................9
10) Local/DS Selector .........................................9
11) Volume and Power On/Off Knob ...............10
12) Quick Up/Quick Down Selector ............... 10
13) Microphone Gain Knob ..........................10
14) RF Gain Knob ........................................10
15) Squelch Control Knob ............................10
16) Microphone Jack ....................................10
17) Antenna Connector....................................10
18) S-Meter ...............................................11
19) PA Jack ...............................................11
20) EXT Jack ..............................................11
21) Power 13.2V ........................................11

TCB-881N
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TCB-881N transceiver
Microphone with cord
Power cable
Radio mounting bracket
Radio mounting thumb screw with rubber washer
Mounting screw with washer (for transceiver bracket)
Mounting screw with washer (for microphone bracket)
Microphone mounting bracket
1 unit
1 unit
1 unit
1 unit
2 pieces
3 pieces
2 pieces
1 pieces
1. Introduction
TCB-881N transceiver is designed to have a good performance in any
conditions that the transceiver operates, using rugged build chassis, PCB’s
and components. This transceiver is also designed for users’ convenience,
implementing human ergonomics to locate the knobs and buttons in
the proper places. The combination of well designed knobs and buttons
as well as user friendly graphic layouts will lead users to quickly adapt
themselves for easy operation. The newly applied menu mode will make
professional users more satisfactory with pleasure. The elegant and luxury
blue LED light supporting the face design will go well with any vehicles.
This instruction manual has been designed to enable you to get the best
use from your CB Transceiver, therefore you are recommended to take a
few minutes to read this instruction manual before initial use of your CB
Transceiver.
2. Supplied Accessories
Your transceiver is supplied with a full range of accessories to help you to
get started and virtually benet from all the features straight away.
3. Installation
Plan the location of the transceiver and microphone first, which is most
convenient for the operation. The transceiver should normally be mounted
horizontally, but may be mounted vertically. The bracket supplied can be
tted above or below the case allowing the TCB-881N to be cradled by the
bracket or suspended from it.

TCB-881N
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Installing An Antenna
It is very important to select a good quality high efficiency 27MHz
antenna. A poor quality antenna or one not designed for the 27MHz
band will give very poor performance and could cause damage to the
transceiver.
1) Place the antenna as high as possible.
2) The longer the antenna is, normally the batter is the performance of the
transceiver.
3) Try to mount the antenna in the centre of the surface that you select.
4) Make sure that you have a solid metal-to-metal ground connection.
5) Be careful not to damage the cable during the installation.
Warning : Never try the operation of your transceiver before connecting a
proper antenna in order not to cause any damage.

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To set the dual watch for the rst time, press this button momentarily while
you are on the current (primary) channel. The DW icon will be blinking.
Select another channel that you like to use as sub-channel (secondary
channel) during the icon’s blinking using the channel selector or quick up/
quick down selector. Press this button momentarily again to activate the
dual watch. The icon stops blinking and keeps being displayed. The dual
watch starts.
To change the dual watch channels, press the DW button during dual
watch operation. The dual watch stops.
If you press the PTT button whilst receiving a signal in dual watch mode
the transceiver will transmit on the currently displayed channel. If you
press the PTT button when no signal is present the transceiver will transmit
on the primary channel.
Emergency Scan : Press dual watch button for about two seconds. The
transceiver starts the emergency scanning. The transceiver visits the
emergency channel once in every second during this scanning. Press the
scan button to deactivate this scanning.
3) Memory Channel Selectors
Momentary press allows you to directly access the pre
-memorized channels (Memory Recall).
The LCD displays one of the memory number icons
(M1, M2, M3 and M4)
To memorize channels (Memory Store), first select the channel that you
are going to memorize and press one of the memory channel selectors for
more than 3 seconds. This will make the channel memorized and at the
same time the transceiver starts to operate on the same channel.
To return to the previous channel operation, momentary press the
memory channel selector, or use the channel selector or quick up/quick
down selector.
When you select a channel and the channel is same as one of the
memorized channels, the matching memory number icon blinks.

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If you press the PTT button when you transceiver detects a signal, the
radio will transmit on the same channel. Scanning will resume after
the scan receive or quick up/quick down selector to resume scanning
immediately.
If you press the PTT button during scanning, the radio will return to your
original channel. Scanning will resume after the scan receive time and/
or the scan delay time. Use the channel selector or quick up/quick down
selector to resume scanning immediately.
Lock : Press this button for more than 2 seconds to activate and deactivate
the keypad lock function. This function locks only the channel selector,
quick up/quick down buttons, AM/FM button and scan button. Other
buttons and selectors work normal.
7) AM/FM and LCR Button
between AM and FM modes by momentarily pressing this button.
8) CB/PA Selector
9) ANL/OFF Selector
10) Local/DX Selector
When the transceiver is used in UK, UE, or EC frequency
band modes, this button activates or deactivates Las
Channel Recall function. In all other modes (where national
regulations permit this), this button allows user to switch
This selector should be on CB location in order to operate
the CB transceiver. To make a public announcement, the PA
can be selected. In this case, only the PTT button works and
you can speak through the PA speakers.
By selecting the ANL location, the transceiver can reduce
such impulsive noise as generated by engine of your vehicle
or external sources. This works only when the transceiver is
in AM mode.
To receive weak signals, locate the selector on the DX
position. While the transceiver is in the location where
the signal is very strong, locate the selector on the Local
position. This gives attenuation to get better audio sound.

17) Antenna Connector
18) S-Meter
19) PA Socket
20) EXT Socket
21) Power 13.2/24V DC
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11
Insert the mail connector of the antenna cable into this female
antenna connector.
Connect an external S-Meter (This is not supplied) to this port.
Connect a loud speaker to use this transceiver as an audio
amplier.
Connecting an optional extension speaker to this port makes
the built-in speaker turned o.
Connect the power supply cable to this port.
Note : This transceiver works most properly at 13.2V DC input.
And one high voltage protection circuit is installed to protect
this transceiver from 24V DC connection.
1
2
3
4
5
6
7
8
9
10
11
12
1 2 3 4 5 6
7 8 9 10 11 12
Selected Frequency Band
Scan
Transmit
FM Mode
AM Mode
Channel Display
Signal Strength Meter
Memory Channel Activated
Receive
Dual Watch Mode
Keypad Lock
Emergency Channel Display
5. LCD Display

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Note :
1. Use Channel Selector to select the main menu features such as Beep
Tone, Time-out Timer, Scan Receive Timer, Scan Delay Timer, Backlight
Dimmer and Backlight Timer.
2. Use AM/FM button to enter value setting level.
3. Use Channel Selector to select or change any value that you like to have
while the values are blinking.
4. Use SCAN button to return to the previous main menu features.
5. Press Lock button or PTT button of the Microphone to complete the
selections and changes and return to the stand-by mode. Or the
selections and changes will be automatically conrmed after 5 seconds
of the selections and changes. Using Scan button to return to the
previous main menu features will be accompanied by the automatic
conrmation of the selected values and changes.
8. How to Operate the Transceiver
1) Make sure the microphone is connected to the microphone socket.
2) Make sure the power cable is connected properly.
3) Make sure the antenna is connected to the antenna receptacle.
4) It is better to put the squelch control knob turned fully counterclockwise.
5) Turn on the transceiver and control the volume level.
6) Adjust the squelch control knob to the optimum level.
7) Select your desired channel.
8) To transmit, press the PTT button and speak to the microphone.
9) Release the PTT button to receive.

If you experience problems with your TCB-881N transceiver, rst check the
power supply source. Poor connection of the power supply source can
cause problems such as no transmission, no reception or poor reception,
and weak or no sound. Ensure that the microphone and antenna are also
well connected.
If this does not solve the problem, reset your transceiver as follows.
This will reset the transceiver, so all the memories are erased and the
parameters return to the initial factory setting.
This should x most problems. In case of further diculty, please consult
your dealer or visit our website.
TCB-881N
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15
10. Trouble Shooting
1) Switch o the transceiver.
2) Pressing DW and E/NB buttons at the
same time, switch on the transceiver.
3) Press PTT of Microphone to complete.
11. CE Declaration
CE versions of the TCB-881N which display the CE symbol on the
product label, complies with the essential requirements of the
Radio Equipment Directive (RED) 2014/53/EU.
This unit can be used without license and charges in; Austria, Belgium,
Bulgaria, Cyprus, Czech, Denmark, Estonia, Finland, France, Germany,
Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg,
Malta, Netherlands, Norway, Poland, Portugal, Pomania, Slovakia, Slovenia,
Spain, Sweden, Switzerland, and U.K
E / NB
DW

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12. Safety Requirement
The power cable is for 12V/24V DC only. Be sure the transceiver is off
before connecting the leads of the power cable to the power supply. It is
important to observe the polarity even if the unit is protected against the
accidental inversion :
* Red : Positive pole (+)
* Black : Negative pole (-)
The same colors are present on the battery and in the fuse box of the car.
The unit must be wired for the negative ground only.
To avoid damage, do not operate your CB radio without connecting a
proper antenna
ENGLISH
TCB - 881N
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17
13. Specication
G
E
N
E
R
A
L
Channel 40 (See the frequency band chart)
Frequency Range 26.96 MHz ~ 27.99125 MHz
Operating Mode F3E (FM), A3E (AM)
Frequency Control PLL Synthersizer
Frequency Tolerance 0.002%
Operating Temperature Range -10 to +55℃
Microphone Plug-in Type
Input Voltage 12V 24V DC ± 10%
Size 156 (W) x 136 (L) x 51 (H)
Weight 820g
Antenna Connector SO-239 type
T
R
A
N
S
M
I
T
T
E
R
Power Output Duty cycle 10% 4 Watts @ 13.2V DC
Modulation AM: from 85% to 95%
FM: 1.8KHz ± .2KHz
Frequency Response 300Hz to 3000Hz
Output Impedance 50ohms, Unbalanced
Harmonic Suppression Less than -36dBm
Current Drain AM Full Mod. 1.6A Max.
R
E
C
E
I
V
E
R
Receiving System Dual conversion superhterodyne
IF Frequencies Double conversion 1st 10.695MHz/2nd 455KHz
Sensitivity 0.7㎶for 10dB(S+N)/N in AM Mode
0.7㎶for 20dB SINAD in FM Mode
Audio Output Power 2.0W @ 8ohm
Audio Distortion Less than 8% @ 1KHz
Image Rejection 60dB
Adjacent Channel Rejection 60dB
Conducted Spurious Less than -57dB
Frequency Response 300Hz to 2500Hz
Built-in Speaker 8ohms, Round
Squelch Adjustable; Threshold less than 1㎶
* Specication is subject to change without prior notice.
ENGLISH
TCB - 881N

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15. Frequency Table
EU/E/F EC
UK(CEPT) I I2 D PL UK
(ENG.)
1 26.965 26.965 26.965 26.965 1 26.965 41 26.565 26.960 27.60125
2 26.975 26.975 26.975 26.975 2 26.975 42 26.575 26.970 27.61125
3 26.985 26.985 26.985 26.985 3 26.985 43 26.585 26.980 27.62125
4 27.005 27.005 27.005 27.005 4 27.005 44 26.595 27.000 27.63125
5 27.015 27.015 27.015 27.015 5 27.015 45 26.605 27.010 27.64125
6 27.025 27.025 27.025 27.025 6 27.025 46 26.615 27.020 27.65125
7 27.035 27.035 27.035 27.035 7 27.035 47 26.625 27.030 27.66125
8 27.055 27.055 27.055 27.055 8 27.055 48 26.635 27.050 27.67125
9 27.065 27.065 27.065 27.065 9 27.065 49 26.645 27.060 27.68125
10 27.075 27.075 27.075 27.075 10 27.075 50 26.655 27.070 27.69125
11 27.085 27.085 27.085 27.085 11 27.085 51 26.665 27.080 27.70125
12 27.105 27.105 27.105 27.105 12 27.105 52 26.675 27.100 27.71125
13 27.115 27.115 27.115 27.115 13 27.115 53 26.685 27.110 27.72125
14 27.125 27.125 27.125 27.125 14 27.125 54 26.695 27.120 27.73125
15 27.135 27.135 27.135 27.135 15 27.135 55 26.705 27.130 27.74125
16 27.155 27.155 27.155 27.155 16 27.155 56 26.715 27.150 27.75125
17 27.165 27.165 27.165 27.165 17 27.165 57 26.725 27.160 27.76125
18 27.175 27.175 27.175 27.175 18 27.175 58 26.735 27.170 27.77125
19 27.185 27.185 27.185 27.185 19 27.185 59 26.745 27.180 27.78125
20 27.205 27.205 27.205 27.205 20 27.205 60 26.755 27.200 27.79125
21 27.215 27.215 27.215 27.215 21 27.215 61 26.765 27.210 27.80125
22 27.225 27.225 27.225 27.225 22 27.225 62 26.775 27.220 27.81125
23 27.255 27.255 27.255 27.255 23 27.255 63 26.785 27.250 27.82125
24 27.235 27.235 27.235 27.245 24 27.235 64 26.795 27.230 27.83125
25 27.245 27.245 27.245 27.265 25 27.245 65 26.805 27.240 27.84125
26 27.265 27.265 27.265 26.875 26 27.265 66 26.815 27.260 27.85125
27 27.275 27.275 27.275 26.885 27 27.275 67 26.825 27.270 27.86125
28 27.285 27.285 27.285 26.895 28 27.285 68 26.835 27.280 27.87125
29 27.295 27.295 27.295 26.905 29 27.295 69 26.845 27.295 27.88125
30 27.305 27.305 27.305 26.915 30 27.305 70 26.855 27.300 27.89125
31 27.315 27.315 27.315 26.925 31 27.315 71 26.865 27.310 27.90125
32 27.325 27.325 27.325 26.935 32 27.325 72 26.875 27.320 27.91125
33 27.335 27.335 27.335 26.945 33 27.335 73 26.885 27.335 27.92125
34 27.345 27.345 27.345 26.955 34 27.345 74 26.895 27.340 27.93125
35 27.355 27.355 27.355 35 27.355 75 26.905 27.350 27.94125
36 27.365 27.365 27.365 36 27.365 76 26.915 27.360 27.95125
37 27.375 27.375 27.375 37 27.375 77 26.925 27.370 27.96125
38 27.385 27.385 27.385 38 27.385 78 26.935 27.380 27.97125
39 27.395 27.395 27.395 39 27.395 79 26.945 27.390 27.98125
40 27.405 27.405 27.405 40 27.405 80 26.955 27.400 27.99125
AM/FM FM The factory can limit the frequency ranges on request for
sales to certain countries.

Part No. 820-C88N-000
DECLARATION OF CONFORMITY
We, TTI Tech Co., Ltd. (B-912, Indeokwon IT Valley, 40 Imi-ro, Uiwang-si,
Gyeonggi-do, Korea) declare on our sole responsibility that this equipment
complies with the essential requirements of the Radio Equipment
Directive (RED) 2014/53/EU, and that any applicable Essential Test Suite
measurements have been performed.
Kind of equipment : MOBILE CB TRANSCEIVER
Type-designation : TCB-881N
Version (where applicable) :
This complicance is based on conformity with the following standards,
specications or documents :
N. Y. Kim / Director
Korea, April 2018
Signature
EN 62311:2008
EN 300 433 V2.1.1
EN 301 489-1 V2.2.0
EN 301 489-13 V1.2.1
EN 60950-1:2006+A11:2009 +A1:2010+A12:2011+A2:2013