Cobra 25 LTD Classic CB Radio Owner Manual
Cobra 2010 GTL WX is a CB radio with many features that can enhance your driving experience. It has 40 CB channels, so you can easily communicate with other drivers on the road. The radio also has a weather band, so you can stay informed about weather conditions in your area. Additionally, the Cobra 2010 GTL WX has a built-in noise blanker, which can help to reduce unwanted noise and interference. The radio also has a dimmer switch, so you can adjust the brightness of the display to your liking.
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How to Use Your
Cobra 25 LTD CLASSICContents
Features ..................................................................................................1
The CB Story .........................................................................................A1
FCC Regulations
FCC Warnings
Included Accessories
Controls & Indicators ........................................................................A2
Our Thanks to You ..............................................................................A3
Customer Support
Installation
Location .............................................................................................2
Mounting and Connection .........................................................2
Antennas
CB Antenna.......................................................................................6
Marine Installation .........................................................................6
Ignition Noise Interference ............................................................7
Operating Your 25 LTD Classic
Turning On Your CB........................................................................8
Setting Channel Selector .............................................................9
To Receive..........................................................................................10
S-Meter ...............................................................................................11
NB/Off (Noise Blanker) Switch ...................................................12
Bright/Dim Switch ..........................................................................12
CB/WX Switch...................................................................................13
RF Gain Control................................................................................13
Setting Squelch ...............................................................................14
To Transmit........................................................................................16
Setting Dynamike®.........................................................................16
Transmit..............................................................................................17
RF Meter .............................................................................................17
External Speaker .............................................................................18
PA (Public Address) ........................................................................19
ANL (Automatic Noise Limiter) Switch ...................................21
Temporary Mobile Set-Up ...........................................................21
Home and Office Set-Up..............................................................22
How Your CB Can Serve You ...........................................................24
A Few Rules You Should Know ..................................................24
Channel 9 Emergency Messages..............................................24
CB 10 Codes......................................................................................26
Frequency Ranges..............................................................................28
25 LTD Classic Specifications.........................................................29
Warranty Information.......................................................................30
Optional Accessories.........................................................................32
Accessory Order Info.........................................................................33
Trademark Acknowledgement.....................................................34
Features of This Product
• 40 CB Radio Channels
• Heavy-Duty Dynamic
Microphone
• Full 4 Watts AM RF Power Output
• Instant Channel 9
• Front Panel 4-Pin Microphone
Connector
• Switchable Blanker
• Adjustable Dynamike Boost
• Tactile Controls
• 9 Ft Microphone Cord
• RF Gain
1
Cobra 25 LTD CLASSICContents
Features ..................................................................................................1
The CB Story .........................................................................................A1
FCC Regulations
FCC Warnings
Included Accessories
Controls & Indicators ........................................................................A2
Our Thanks to You ..............................................................................A3
Customer Support
Installation
Location .............................................................................................2
Mounting and Connection .........................................................2
Antennas
CB Antenna.......................................................................................6
Marine Installation .........................................................................6
Ignition Noise Interference ............................................................7
Operating Your 25 LTD Classic
Turning On Your CB........................................................................8
Setting Channel Selector .............................................................9
To Receive..........................................................................................10
S-Meter ...............................................................................................11
NB/Off (Noise Blanker) Switch ...................................................12
Bright/Dim Switch ..........................................................................12
CB/WX Switch...................................................................................13
RF Gain Control................................................................................13
Setting Squelch ...............................................................................14
To Transmit........................................................................................16
Setting Dynamike®.........................................................................16
Transmit..............................................................................................17
RF Meter .............................................................................................17
External Speaker .............................................................................18
PA (Public Address) ........................................................................19
ANL (Automatic Noise Limiter) Switch ...................................21
Temporary Mobile Set-Up ...........................................................21
Home and Office Set-Up..............................................................22
How Your CB Can Serve You ...........................................................24
A Few Rules You Should Know ..................................................24
Channel 9 Emergency Messages..............................................24
CB 10 Codes......................................................................................26
Frequency Ranges..............................................................................28
25 LTD Classic Specifications.........................................................29
Warranty Information.......................................................................30
Optional Accessories.........................................................................32
Accessory Order Info.........................................................................33
Trademark Acknowledgement.....................................................34
Features of This Product
• 40 CB Radio Channels
• Heavy-Duty Dynamic
Microphone
• Full 4 Watts AM RF Power Output
• Instant Channel 9
• Front Panel 4-Pin Microphone
Connector
• Switchable Blanker
• Adjustable Dynamike Boost
• Tactile Controls
• 9 Ft Microphone Cord
• RF Gain
1
InstallationInstallation
Location
32
Mounting and
Connection
Mounting and Connection
Hold the radio with the mounting bracket in
the exact desired location. If there is no inter-
ference, remove the bracket and use it as a
template to mark the location for the mount-
ing screws.
Location
Plan location of transceiver and microphone
bracket before starting the installation.
Select a location that is convenient for operation,
yet does not interfere with the driver or passenger.
The transceiver is usually mounted to the under-
side of the dash with the microphone bracket
beside it.
Note
The transceiver is held in the
universal mounting bracket by
two thumbscrews which allow
for adjustment at a convenient
angle.
The bracket includes two self-
tapping screws and star wash-
ers. The mounting must be
mechanically strong, conve-
niently located.
continued
Drill the holes and secure the bracket.2
1
Connect the antenna cable plug to the recep-
tacle marked “ANT” on the back of the unit.
3
Note
Before installing the CB radio,
visually check the vehicle’s bat-
tery connection to determine
which terminal, positive or
negative, is grounded (positive
is the larger of the two) to the
engine block (or chassis). A
negatively grounded vehicle
has its negative lead grounded
to the chassis.
Note
In positive ground vehicles the
red wire goes to the chassis and
the black wire is connected to
the ignition switch.
Location
32
Mounting and
Connection
Mounting and Connection
Hold the radio with the mounting bracket in
the exact desired location. If there is no inter-
ference, remove the bracket and use it as a
template to mark the location for the mount-
ing screws.
Location
Plan location of transceiver and microphone
bracket before starting the installation.
Select a location that is convenient for operation,
yet does not interfere with the driver or passenger.
The transceiver is usually mounted to the under-
side of the dash with the microphone bracket
beside it.
Note
The transceiver is held in the
universal mounting bracket by
two thumbscrews which allow
for adjustment at a convenient
angle.
The bracket includes two self-
tapping screws and star wash-
ers. The mounting must be
mechanically strong, conve-
niently located.
continued
Drill the holes and secure the bracket.2
1
Connect the antenna cable plug to the recep-
tacle marked “ANT” on the back of the unit.
3
Note
Before installing the CB radio,
visually check the vehicle’s bat-
tery connection to determine
which terminal, positive or
negative, is grounded (positive
is the larger of the two) to the
engine block (or chassis). A
negatively grounded vehicle
has its negative lead grounded
to the chassis.
Note
In positive ground vehicles the
red wire goes to the chassis and
the black wire is connected to
the ignition switch.
InstallationInstallation
54
Note
Connecting to an accessory fuse
prevents the unit from being left
on accidentally, and also per-
mits operating the unit without
running the engine.
Note
In positive ground vehicles the
red wire goes to the chassis and
the black wire is connected to
the ignition switch.
In a negative grounded vehicle, connect the
red lead of the DC power cord to an accessory
12 volt fuse.
Connect the black lead to the negative side of
the vehicle. This is usually the chassis. Any con-
venient location with a good electrical contact
(remove paint) may be used.
4
5
Plug power cable into back of unit marked
“Power”. Be sure to observe polarity markings.
Mount the microphone
bracket on the right side
of the unit (driver’s left)
using two screws sup-
plied. Bracket should be
placed under the dash
so microphone is readily
accessible.
6
7
8 Attach the 4-pin microphone cable to
receptacle on the front of the unit and
install unit in bracket securely.
54
Note
Connecting to an accessory fuse
prevents the unit from being left
on accidentally, and also per-
mits operating the unit without
running the engine.
Note
In positive ground vehicles the
red wire goes to the chassis and
the black wire is connected to
the ignition switch.
In a negative grounded vehicle, connect the
red lead of the DC power cord to an accessory
12 volt fuse.
Connect the black lead to the negative side of
the vehicle. This is usually the chassis. Any con-
venient location with a good electrical contact
(remove paint) may be used.
4
5
Plug power cable into back of unit marked
“Power”. Be sure to observe polarity markings.
Mount the microphone
bracket on the right side
of the unit (driver’s left)
using two screws sup-
plied. Bracket should be
placed under the dash
so microphone is readily
accessible.
6
7
8 Attach the 4-pin microphone cable to
receptacle on the front of the unit and
install unit in bracket securely.
Ignition Noise InterferenceAntennas
Use of a mobile receiver at low signal levels is
normally limited by the presence of electrical
noise. The primary source of noise in automobiles
is from the alternator and ignition system.
Typically, when signal level is adequate, the back-
ground noise does not present a serious problem.
Also, when extremely low level signals are being
received, the transceiver may be operated with
the vehicle’s engine turned off. The unit requires
very little current and therefore will not signifi-
cantly discharge the vehicle’s battery.
Even though the Cobra 25 LTD Classic has an
automatic noise limiter, in some installations igni-
tion interference may be high enough to make
good communications impossible. Many possibil-
ities exist and variations between vehicles require
different solutions. Consult your COBRA dealer or
a 2-way radio technician for help in locating the
source of a severe noise.
CB Antenna
Since the maximum allowable power output of
the transmitter is limited by the FCC, the antenna
is critical in affecting transmission distance. Only
a properly matched antenna system will allow
maximum power output. Cobra loaded type
antenna models are highly recommended for
most installations. Consult your Cobra dealer for
further details, or call 773.889.3087 and speak to
a Cobra representative.
Marine Installation
The transceiver will not operate at maximum effi-
ciency in a boat without a ground plate, (unless it
has a steel hull). Before attempting installation ,
consult your dealer for information regarding an
adequate grounding system and prevention of
electrolysis between fittings in the hull and water.
CB Antenna
7
Note
For optimum performance in
passenger cars the ideal anten-
na location is on the center of
the roof. Second choice is on the
center of the trunk.
Note
Because many newer trucks
feature fiberglass door skins,
the outside mirror must be
grounded to the chassis..
Note
3-way Combination Antennas
are also available which allow
operation of all three bands
(AM-FM & CB), using a single
antenna. However, this type of
antenna usually results in less
than normal transmit and
receive range when compared
to a standard-type “Single
Band” CB antenna. Call
773.889.3087 for further infor-
mation.
6
1 A standard antenna connector is provided
on the transceiver for easy connection.
Use of a mobile receiver at low signal levels is
normally limited by the presence of electrical
noise. The primary source of noise in automobiles
is from the alternator and ignition system.
Typically, when signal level is adequate, the back-
ground noise does not present a serious problem.
Also, when extremely low level signals are being
received, the transceiver may be operated with
the vehicle’s engine turned off. The unit requires
very little current and therefore will not signifi-
cantly discharge the vehicle’s battery.
Even though the Cobra 25 LTD Classic has an
automatic noise limiter, in some installations igni-
tion interference may be high enough to make
good communications impossible. Many possibil-
ities exist and variations between vehicles require
different solutions. Consult your COBRA dealer or
a 2-way radio technician for help in locating the
source of a severe noise.
CB Antenna
Since the maximum allowable power output of
the transmitter is limited by the FCC, the antenna
is critical in affecting transmission distance. Only
a properly matched antenna system will allow
maximum power output. Cobra loaded type
antenna models are highly recommended for
most installations. Consult your Cobra dealer for
further details, or call 773.889.3087 and speak to
a Cobra representative.
Marine Installation
The transceiver will not operate at maximum effi-
ciency in a boat without a ground plate, (unless it
has a steel hull). Before attempting installation ,
consult your dealer for information regarding an
adequate grounding system and prevention of
electrolysis between fittings in the hull and water.
CB Antenna
7
Note
For optimum performance in
passenger cars the ideal anten-
na location is on the center of
the roof. Second choice is on the
center of the trunk.
Note
Because many newer trucks
feature fiberglass door skins,
the outside mirror must be
grounded to the chassis..
Note
3-way Combination Antennas
are also available which allow
operation of all three bands
(AM-FM & CB), using a single
antenna. However, this type of
antenna usually results in less
than normal transmit and
receive range when compared
to a standard-type “Single
Band” CB antenna. Call
773.889.3087 for further infor-
mation.
6
1 A standard antenna connector is provided
on the transceiver for easy connection.
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
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Key Features
- 40 CB Radio Channels
- Heavy-Duty Dynamic Microphone
- Full 4 Watts AM RF Power Output
- Instant Channel 9
- Front Panel 4-Pin Microphone Connector
- Switchable Blanker
- Adjustable Dynamike Boost
- Tactile Controls
- 9 Ft Microphone Cord
- RF Gain
Related manuals
Frequently Answers and Questions
Where should I install the transceiver?
Select a location that is convenient for operation, yet does not interfere with the driver or passenger.
How can I adjust the angle of the transceiver?
It is held in the universal mounting bracket by two thumbscrews which allow for adjustment at a convenient angle.
What does it mean if my vehicle is negatively grounded?
It means that its negative lead is grounded to the chassis.
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