REAR PANEL
16. “EXT” jack
external loudspeaker jack.(the internal loudspeaker is excluded)
17. Power 13.2V DC
Power supply cable
18. S-Meter jack
It allows an external “s meter” connection
19. Antenna connector
(SO239 connector type)
MICROPHONE
1. PTT: transmission button
2. UP/DOWN buttons: manual channels selector.
3. 6 pin microphone connector
Microphone connection
Pin 1
Mike (RF)
Pin 2
RX (Audio)
Pin 3
PTT
Pin 4
Up/Down-Switch
Pin 5
Ground
Pin6
Power line
INSTALLATION
Safety and convenience are the primary consideration for mounting any piece of mobile equipment. All
controls must be readily available to the operator without interfering with the movements necessary for
safe operation of the vehicle. Set the proper position in the car to install the transceiver using the supplied
supporting bracket or eventually the slide bracket. Tighten the retaining screws. The fixing bracket must
be close to metallic parts.
POWER SUPPLY
Be sure the transceiver is off. In the direct-voltage power supply it is very important to observe the
polarity even if the unit is protected against the accidental inversion:
Red = positive pole (+)
Black = negative pole (-)
INSTALLING AN ANTENNA
1. Place the antenna as high as possible
2. The longer the antenna the better will be the performance
3. If possible, mount the antenna in the centre of whatever surface you choose
4. Keep antenna cable away from noise sources, such as the ignition switch, gauges, etc.
5. Make sure you have a solid metal-to-metal ground connection.
6. Prevent cable damage during antenna installation.
WARNING
To avoid damage never operate your CB radio without connecting a proper antenna. A periodical control
of the cable and of the ROS is recommended.
How to operate with your transceiver
OFF/VOLUME CONTROL
In ‘’off’’ position your ALAN 255 ESP E40 is off. Turn this control clockwise to switch on the unit. Turn the
knob clockwise a little more to set the audio level, until you get a comfortable reception.
SQUELCH CONTROL
This control cancels the background noise of the receiver. By turning the knob to the right the function is
activated, by turning the knob to the left the function is deactivated. The knob should be regulated
exactly at the point where the receiver background noise disappears.
Select a CB-Channels
You have 3 possibilities to select a CB-channel.
1. Using the rotary channel selector
2. Using the UP/DN-Buttons on the microphone
3. Using the SCAN-Button
4
3
ANTENNA
S-METER
EXP-SP
16
18
19
17
UP
DOWN
1
2
3
22K
UP
DOWN
TX
3
2
3
4
5
1
3
6
2
1
5
4
MIC
RX
