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 PANEL PEAR PANEL PRESS-TO-TALK MICROPHONE FUNCTION MENU SETUP OPERATING PROCEDURE TO RECEIVE OPERATING PROCEDURE TO TRANSMIT SPECIFICATION WARNIGN To use the radio, please connect the antenna to the location “B” on the back pane
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.
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.
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 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.
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).
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. 5）ADJUSTMENT 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.
to 1 (an SWR reading between 1 and 1.8 is acceptable). HOW TO USE YOUR CB RADIO 7 digits: Display frequency and any other information Indicating bars: Indicate RX, RSSI, PA, PWR, SWR The first decimal point: Appears when current channel is edited with SCAN DEL.
2. Appears when CLARIFIER FUNCTION is COARSE operation or RT operation. 3. Appears when CLARIFIER FUNCTION is transmitting frequency regulated. 1. OFF/ON/VOLUME（Inner Dual Concentric）. Turn clockwise to switch on the CB radio and set desired volume level. Under normal operating state, the VOLUME control is used to adjust the output volume obtained either by the transceiver speaker or the external speaker or the external PA speaker, if used. 2.
This switch is for adjusting sensitivity during reception. For long distance communications RF GAIN should be set to maximum. RF GAIN can be reduced to avoid distortion, when your correspondent is close by and when he does not have RF POWER. The normal setting of this function is on maximum (fully clockwise). 6. RF POWER (Outer Dual Concentric) Adjustment of the output power is for AM and FM mode only. Reducing the power is allowed when communicating with a person who has no RF GAIN.
13. RECEIVER/TRANSMIT INDICATOR When it is receiving, the LED will be green. The LED will be red when it is transmitting. 14. LCD DISPLAY Display frequency, all kinds of information and icons. 15. FUNC This is functional key. Press and hold this key for 2seconds to enter into Functions Menu Setup (refer to Functions Menu for more details). Press FUNC key and other individual key to realize the second functions silk-screened under the button.
② FUNC＋NB/ANL Press FUNC＋NB/ANL to realize the Keyboard Lock function. When this function is enabled, all keys are invalid except PTT, BAND SWITCH, and MODE SWITCH. When pressing any key except PTT, BAND SWITCH, MODE SWITCH, the LOCK icon will display on the LCD. The situations indicate that the keyboard has been locked. Press FUNC＋NB/ANL repeatedly to switch on/off the function. 18. DW or LCD OFF ① The DW (dual watch) function allows automatic alternate monitoring of two channels.
Press the SCAN key to enable the SCAN function. Before enabling the SCAN function, firstly turn the SQ control clockwise till the background noise is cut out. Then press the SCAN key, radio will automatically scan all channels continuously in the scan list and the SC icon will appear on the LCD. When a signal is detected on a channel, scanning stops on this channel. You can receive the calling, and also, can transmit on this channel by pressing PTT key.
bars indicate SWR value other than PA or PWR value. One bar displaying on the LCD indicates that SWR value is 1.0. Each additional bar indicates every 0.1 added value. Repeat this operation to switch ON/OFF the function. ② FUNC+＋SWR When pressing this key, TOT ON or TOT OFF would display on the LCD for 2 seconds. Repeat this operation to switch ON/OFF the function. When ON appears on the LCD, users can press PTT to transmit. Then, the radio would time the transmitting duration.
24. EXT SP or PA SP EXT SP Accept 4 to 8 ohm, 4 watt external speaker to be connected. When external speaker is connected to this jack, the built-in speaker is automatically disconnected. PA SP It is used to connect a PA speaker. Before operating PA, you must firstly connect a PA speaker to this jack. 25. ATTENNA Accept 50 ohm coaxial cable with a type PL-259 plug to be connected. 26.
26. PTT Transmitting key, Press to speak and release to receive a message. 27.UP/DN These key allow increasing or decreasing a channel number. 28. AQ ① When the radio is receiving a call, press this key to enable ASQ (Automatic Squelch Control) function. Then, “AQ” would appear on the LCD. Press this key repeatedly to switch on/off the function. ② When the radio is receiving a call, press and hold this key for over 2 seconds to enable signal monitoring function.
desired amendments. To enter Function Menu: under ON state, press and hold FUNC key for more than 2seconds, and then release the FUNC key to enter into the Function Menu Setup. Under this condition, press FUNC key to select different functions menu, CHANNEL SELECTOR Switches to change the data of Function Menu.
COA: When this option is selected, press PUSH and turn CLARIFIER knob to realize COARSE function. When pressing this key, “2” icon will appear on far left of the LCD. Under this condition, rotate the CLARIFIER knob to change frequency of both transmitting and receiving. T: When this option is selected, press PUSH and turn CLARIFIER knob to change transmitting frequency. When pressing this key, “3” icon will display on the far left of the LCD.
This menu is to set Scan Type. Options are as follows: SQ: When SQ is selected, scan would stop when a valid signal is detected. The radio would resume scanning after signal disappears for 5s. TI: When TI is selected, scan would stop when a valid signal is detected. The radio would resume scanning 5 seconds later, whether signal disappears or not. Default: SQ ⑦TSR (Transmitting SWR Protection) This menu is to choose whether to enable Transmitting SWR Protection function or not.
surpasses the voltage setup in advance, the radio would display “DC LO” or “DC HI” to remind you that the voltage is not in normal state. Meanwhile, the radio will prohibit transmitting and emit beep prompt. OFF: When OFF is selected, the Power Supplying Voltage is disabled. Default: ON (DC 10.5V-16V) ⑨TLD (Content displayed on the LCD when transmitting) This menu is to set the content displayed on the LCD when transmitting.
50ms. Default: 500ms ⑿CFR (CW Side Tone Frequency) This menu is to select CW Side Tone Frequency from 300HZ－3KHZ, the shift step is 10HZ. Default: 1050HZ ⒀ TON (Transmitting Single-Tone Frequency) This menu is to select Transmitting Single-Tone Frequency from 300HZ-3KHZ. The shift step is 10HZ. Default: 1050HZ OPERATING PROCEDURE TO RECEIVE 1. Be sure that power supply, microphone and antenna are connected to the proper connectors before going to the next step. 2.
OPERATING 1. Select the PROCEDURE TO TRANSMIT desired channel of transmission 2. Press the Push-To-Talk switch on the microphone and speak in a normal voice. SPECIFICATIONS General Frequency Range 25.615MHZ—30.105MHZ (Programmable) Frequency Band A/B/C/D/E/F Channel 60 channels (programmable) in each band Frequency Control Phase-Locked-Loop Synthesizer Frequency Step 10Hz、100 Hz、1K Hz、10K Hz Frequency Tolerance 0.005% Frequency Stability 0.
FM: 1.0 μV for 20 dB (S+N)/N at greater than 1/2 watt of audio output Selectivity AM/FM:6dB@3KHz,50dB @9KHz SSB: 6 dB@2.1KHz,60dB @3.3KHz Image Rejection More than 65dB IF Frequency AM/FM: 10.695 MHz 1st IF, 455 KHz 2nd IF SSB: 10.695 MHz Adjacent-Channel 60dB AM/FM &70 dB SSB Rejection RF Gain Control Automatic 45 dB adjustable for optimum signal reception Gain Less than 10 dB change in audio output for inputs from 10 to Control(AGC) 100,000 microvolt.
