LT-298 - LUITON
LT-298
High Quality AM/FM CB Radio
Owner’s Manual
RoHS
Compliant
0700
To User
Welcome to use LUITON LT-298 AM/FM CB radio, it is a
high quality CB radio, which suitable for Poland, Romania, Germany, UK, Italy, Russia bands.
TABLE OF CONTENTS
1. CONTROLS AND REAR PANEL
1.CONTROLS AND REAR PANEL................................................................. 1
u
i
o
!0
!1
2.INSTALLATION........................................................................................... 4
2.1 Installation of the Main Unit............................................................4
2.2 Installation of the Antenna.............................................................4
2.3 Checking Operation of the Radio................................................5
3.TECHNICAL INDICATORS......................................................................... 6
q
w
e
r
!2
t
!3
y
!4
q MICROPHONE connector
Connect the supplied electric condenser microphone to this connector, and then lock it via the ring nut.
w UP KEY
Press this key and channel NO. runs up.
e DOWN KEY
Press this key channel NO. runs down.
r SQ knob
The SQUELCH control allows to silent the receiver by cutting the
background noise.
p.1
Turn the SQUELCH knob anticlockwise until the background noise
13.8VDC power cord input.
is cut. Rotate the SQUELCH knob clockwise (SQUELCH ON) to listen
!4 EXT (External Speaker) Jack
to the weakest signals.
This jack is for connecting an external speaker.
t RF GAIN knob
!5 PTT (Push-to-talk) key
This transceiver uses a high sensitivity and selectivity receiver circuit.
Push the button to talk then release
The receiver gain is adjustable with the RF GAIN knob. By rotating
to receiving mode.
the knob anticlockwise, the receiver gain is reduced. It is conve-
UP
!6 UP key of the microphone
ASQ
!9
DN
!5
nient to reduce the receiver gain in case of very strong signals from
This switch allows increasing a chan-
local stations. This knob only functions at AM mode.
nel number.
y OFF/VOL
!6 !7 !8
!7 ASQ on and off
This knob controls the radio ON and OFF as well as adjusts the volume. If no signals are being received on the operating channel,
it is suggested to turn on the SQUELCH and adjust the volume to
the desired level while listening to the background noise. When it is
turned on by operating the Volume knob,the radio will remember
the channel, frequency, AM or FM used last time.
u AM/FM mode selector
When you press this button, the LED
lights for TX and ASQ will light green, then ASQ pen.
!8 DN key of the microphone
This switch allows decreasing a channel number.
!9 MICROPHONE plug
6-pole microphone plug with locking ring nut, to be connected to
socket (1) located on the front side of the radio.
This switch allows selecting the modulation mode AM or FM.
i CH9/CH19
This function can select emergency channel CH19 and CH9
Note: In the off state,turn to CH9 can select the frequency of other
European countries, and turn to CH can confirm. Restart the radio
will prompt the current frequency table.
o TX and ASQ LED
The indicator light is bi-color,red light and green light, transmitting
shows red light, and open ASQ shows green light.
!0 RX Signal Meter
4-bar RX signal Meter to monitor the strength of the received signals.
!1 DISPLAY
The digital LED display shows the channel.
!2 ANTENNA CONNECTOR
Refer to the section INTALLTION OF THE ANTENNA.
!3 13.8 VDC POWER CORD
p.2
p.3
vehicle with proper connection to ground. Before connecting the
2. INSTALLATION
antenna to the radio, it is necessary to check the correct operation
Before installing the main unit in the vehicle, please check and select
of the antenna with low standing wave ratio (S.W.R.) via adequate
the most convenient position, in order that the radio will be easy to
instruments. If not, the transmitter circuit of the radio could be dam-
reach and comfortable to operate without disturbing or interfering
aged. The antenna usually must be installed on the highest part of
driving. Use the supplied bracket and hardware to install the radio.
the vehicle, free from obstacles and as far away as possible from any
The bracket screws must be
source of electric or electromagnetic noise. The RF antenna coaxial
well tightened to avoid loose-
cable must not be damaged or pressed on its way between anten-
ness as the vehicle vibrates.
na and the radio. The correct operation of the antenna and the low
The car mounting bracket
standing wave ratio (S.W.R.) must be checked periodically. Connect
can be installed over or be-
the RF antenna coaxial cable to the antenna connector !5, located
low the radio and the radio
on the rear side of the radio.
may be inclined as desired
2.3 CHECKING OPERATION OF THE RADIO
according to the specific
type of installation (under
Once radio has been connected to the vehicle electric system
dashboard or track cabin roof installation).
and to the antenna, the correct operation of the system should be
2.1 INSTALLATION OF THE MAIN UNIT
checked. Please proceed as following:
1) Check that the power cable is correctly connected.
Before connecting the radio to the vehicle electric system, please
2) Check that the RF antenna coaxial cable is properly connected.
make sure the radio is powered off with the OFF/VOL y knob com-
3) Connect the microphone to the connector q that is on the front
pletely turned anticlockwise at OFF position. The DC power cable of
side of the radio.
the radio includes a fuse holder with fuse located on the red positive
4) Rotate the SQUELCH r knob anticlockwise.
(+) wire. Please connect the DC power cable to the vehicle electric
5) Turn radio on by the OFF/VOL y knob and adjust volume to the
system with special attention to correct polarity, even if the radio is
protected against polarity inversion. Connect the red wire to the positive (+) pole and the black wire to the negative (-) pole of the vehicle
electric system. Please make sure that the wires and terminals are
firmly connected, to prevent cables from disconnecting or causing
short circuits.
desired level.
6) Select the desired channel with the up/down key on the front side
of the radio.
7) Rotate the SQUELCH r knob clockwise to cut the background
noise.
8) Press the PTT key to transmit and release it to receive.
2.2 INSTALLATION OF THE ANTENNA
9) Check the level of the received and transmitted signals on the 4
bar RX signal Meter and TX LED. The transceiver will work correctly.
A specific mobile antenna adjusted for 27 MHz frequency range must
be used. The antenna installation must be done by a qualified technician or service center. Please install the antenna carefully on the
p.4
p.5
3. TECHNICAL INDICATORS
General
Channels
40 AM/FM
Frequency range
26.960 – 27.400MHz
Frequency control
P.L.L.
Frequency Tolerance
±0.005%
Operating temperature
-20°/+55°C
DC input voltage
13.8Vdc ±15%
Size
115 (L) x 38 (A) x 150 (P) mm
Weight
0.8 kg
Receiver
System
CPU controlled Double conversion super
IF
1° 10.7 MHz / 2° 450 KHz
Sensitivity
-120dBm for 12dB SINAD (FM)
-107dBm for 12dB SINAD (AM)
Audio output
@10% THD 2.5W at 8 ohm
Audio distortion
<8% at 1 KHz
Image rejection
65dB
Adjacent channel
85dB
Signal ise ratio
45dB
Current drain
220mA (stand-by)
Transmitter
System
CPU controlled P.L.L. synthesizer
Maximum RF power
4W at 13.2Vdc
Modulation
85% to 90% (AM)
2KHz ±0.2 KHz (FM)
ANT impedance
50 ohm unbalanced
Current drain
1500mA (at no modulation)
*Specifications and features are subject to change without notice.
p.6
Bond Telecom Co. Ltd.
Website: www.luiton.com
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