AT-5555 RADIO USER’S MANUAL
TABLE OF CONTENTS
WARNIGN
RESET FUNCTION
FUNCTIONS & FEATURES
INSTALLATON
Where and how to Mount Your CB Radio
Antenna Installation
Power Connection
Basic Operation
Adjustment of SWR (Standing Wave Ratio)
HOW TO USE YOUR CB
LCD DISPLAY
FRONT PAN EL
PEAR PANEL
PRESS-TO-TALK MICROPHONE
FUNCTION MENU SETUP
OPERATING PROCEDURE
OPERATING
SPECIFICATION
WARNIGN
To use the radio, please connect the antenna to the location “B” on the back panel of the
equipment firstly and then set the SWR (Standing Wave Ratio) before transmitting. Failure
to do so may result in destruction of the power amplifier, which is not covered by the
PROCEDURE TO TRANSMIT
TO RECEIVE
guarantee.
Welcome to Use
Welcome to the world of new CB radios. The new AT-5555 Radio provides you with top
performance and best visual enjoyment. With the use of SMT technology to guarantee the
best stability, reliability and unprecedented quality, your multi-functional AT-5555 Radio
10-meter Radio is a new step in personal communication and is surely the best choice for
professional users of CB radios. Moreover, with multiple connecting ports in the radio,
AT-5555 Radio is ready for future upgrading and functions expanding. To ensure that you
use the radio to the fullest, please read this manual carefully before installing and using
your AT-5555 Radio.
RESET FUNCTION (Resume Factory Default)
This CB Radio introduces RESET FUNCTION to prevent accidents and provide a solution
for customers who changed some functions unconsciously and do not know how to
resume normal settings. The CB Radio will resume factory default once this function is
activated.
How to Operate:
Step 1: Power off the radio
Step 2: Press and hold FUNC and SCAN keys at the same time, then release followed
by power on the radio.
Step 3:
All former settings would be replaced by Factory Default value when LCD displays
"REND"
WARNING: All former settings would be replaced by Factory Default value after operating
the RESET FUNCTION.
FUNCTIONS & FEATURES
Release the two keys when LCD displays "RES".
1. Big LCD which displays frequency and all kinds of information
2. DUAL-DIGITAL TUBE FOR CHANNEL DISPLAY
3. USE EL technology for backlight
4. PA、CW、AM、FM、USB、LSB mode
5. A、B、C、D、E、F , 6 bands in total, with 60 channels at most in each band to be
programmed.
6. Frequency Tuning Step can be 10HZ, 100HZ, 1KHZ or 10KHZ.
7. Multiple CLARIFIER Operating Modes
8. Flexible menu functions and PC programming software to meet varied customer
demands
9. ECHO Function
10. SQ, ASQ Function (FM and AM mode only)
11. RF GANI ADJUSTMENT
12. RF PWR ADJUSTMENT
13. SCAN FUNCTION
14. RB FUNCTION
15. NB/ANL FUNCTION
16. DW DUAL-WATCH FUNCTION
17. BEEP VOICE PROMPT
18. +10KHZ Function
19. SWR、S/RF、DC Voltage display function
20. TOT function
21. HI－CUT FUNCTION
22. EMG CALL
23. SWR PROTECTION
24. POWER SUPPLIED VOLTAGE PROTACTION
25. Key-Lock Function
INSTALLLATON
WHERE AND HOW TO MOUNT YOUR MOBILE CB RADIO
1
a) You should choose the most appropriate setting from a simple and practical point of
view
b) Your CB radio should not interfere with the driver or the passengers.
c) Remember to provide
antenna, accessory cabling) so that they do not in any way interfere with the driving of
vehicles.
for the passing and protection of different wires (e.g.: power,
d) To install your equipment, use the cradle (1) and the self-tapping screws [2] provided
(drilling diameter 5 mm). Take care not to damage the vehicle’s electrical system while
drilling the dash board.
e) Do not forget to insert the rubber joints [3] between the CB and its support as these
have a shock-absorbing effect which permits gentle orientation and tightening of the
set.
f) Choose where to place the microphone support and remember that the microphone
cord must stretch to the driver without interfering with the controls of the vehicle.
2) ANTENNA INSTALLATION
a) Choosing your antenna:
For CB radios, the longer the antenna, the better its results. Your dealer will help you with
your choice of antenna.
b) Mobile antenna:
-Must be fixed to the vehicle where there is a maximum of metallic surface(ground plane) ,
away from windscreen mountings.
-There are two types of antenna: Pre-Regulated Antenna which should be used on a good
ground plane (e.g. car roof or lid of the boot), and Adjustable Antenna which offer a much
larger frequency range and can be used on a smaller ground plane.
For an antenna which must be fixed by drilling, you will need a good contact between the
antenna and the ground plane. To obtain this, you should lightly scratch the surface where
the screw and tightening star are to be placed.
-Be careful not to pinch or flatten the coaxial cable (as this runs the risk of break down
and/or short circuiting).
-Connect the antenna to location (B).
c) Fixed antenna:
A fixed antenna should be installed in a
it will perhaps be necessary to stay it, according to the laws in force (you should seek
professional advice). All AT-5555 antennas and accessories are designed to give
maximum efficiency to each CB radio within the range.
3) POWER CONNECTION
space as clear as possible. If it is fixed to a mast,
Your RADIO is protected against an inversion of polarities. However, before switching it
on, you are advised to check all the connections. Your equipment must be supplied with a
continued current of 12 volts (A). Today, most cars and lorries are negative earth. You can
check this by making sure that the negative terminal of the battery is connected either to
the engine block or to the chassis. If this is not the case, you should consult your dealer.
WARNING: Lorries generally have two batteries to supply a voltage of 24 volts, in which
case it will be necessary to insert a 24/12 volt converter into the electrical circuit. The
following connection steps should be carried out with the power cable disconnected from
the set.
a) Check whether the battery is of 12 volts.
b) Locate the positive and negative terminals of the battery (+ is red and – is black).
Should it be necessary to lengthen the power cable, please use the same or a superior
type of cable.
c) It is necessary to connect your CB to a permanent (+) and (-). We advise you to
connect the power cable directly to the battery (as the connection of the CB cable to the
wiring of the car-radio or other parts of the electrical circuit may, in some cases, increase
the possibilities of interference).
d) Connect the red wire (+) to the positive terminal of the battery and the black (-) wire to
the negative terminal of the battery.
e) Connect the power cable to your CB radio.
WARNING: Never replace the original fuse (10A) by one of a different value.
BASIC OPERATIONS TO BE CARRIED OUT BEFORE USING YOUR SET FOR THE
4
FIRST TIME(without transmitting or using the <<Push-To-Talk>> switch on the
microphone)
a) Connect the microphone
b) Check the antenna connections
c) Turn the set on by turning the volume knob clockwise
d) Turn the squelch knob to minimum
e) Adjust the volume to a comfortable level
f) Go to channel 20@D band by using either the UP or DN key on the microphone or the
rotary knob.
5ADJUSTMENT OF SWR(standing wave ratio)
WARNIGN: This must be carried out when you use your CB radio for the first time (and
whenever you re-position your antenna). The adjustment must be carried
out in an obstacle-free area.
5) Adjustment with a built-in SWR meter or external SWR meter
a) To connect the SWR meter
Connect the SWR meter between the CB radio and the antenna as close as possible
to the CB radio (use a maximum of 40cm cable)
b) To adjust the SWR meter
-Set the CB to channel 20@D band in FM
-put the switch on the SWR meter to position CAL or FWD
-Press the <<Push-To-Talk>> switch on the microphone to transmit
-Bring the index needle to ▼ by using the calibration key
- Change the switch to position SWR (reading of the SWR level). The reading on the
meter should be as near as possible to 1. If this is not the case, re-adjust your antenna to
obtain a reading as close as possible to 1.( An SWR reading between 1 and 1.8 is
acceptable).
-It will be necessary to re-calibrate the SWR meter after each adjustment of the antenna.
6) HOW TO USE INTERNAL SWR METER
-Set CB to channel 20@D band in FM
-Press <<push-to-talk>> button on the microphone to transmit
-At the moment, LCD would display SWR value which should be as close as possible to 1.
If this is not the case, re-adjust your antenna to obtain a SWR value as close as possible
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